diff --git a/History.md b/History.md
index 5bc6a3982d..3938c4cf0d 100644
--- a/History.md
+++ b/History.md
@@ -7,6 +7,12 @@
   much more quickly, especially if you have many `node_modules` files.
   See https://github.com/meteor/meteor/pull/7668 for more details.
 
+> Note: the `METEOR_PROFILE` environment variable now provides data for
+  server startup time as well as build time, which should make it easier
+  to tell which of your packages are responsible for slow startup times.
+  Please include the output of `METEOR_PROFILE=10 meteor run` with any
+  GitHub issue about rebuild performance.
+
 * `npm` has been upgraded to version 3.10.9.
 
 * The `cordova-lib` npm package has been updated to 6.3.1, along with
diff --git a/packages/accounts-base/package.js b/packages/accounts-base/package.js
index 0807aaef24..5f33d2e408 100644
--- a/packages/accounts-base/package.js
+++ b/packages/accounts-base/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "A user account system",
-  version: "1.2.14-rc.2"
+  version: "1.2.14"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/accounts-facebook/package.js b/packages/accounts-facebook/package.js
index 461b0ca2f9..c323e43ebb 100644
--- a/packages/accounts-facebook/package.js
+++ b/packages/accounts-facebook/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Login service for Facebook accounts",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/accounts-github/package.js b/packages/accounts-github/package.js
index f51fb41338..7646ea1108 100644
--- a/packages/accounts-github/package.js
+++ b/packages/accounts-github/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Login service for Github accounts",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/accounts-google/package.js b/packages/accounts-google/package.js
index 2d6b0a115f..1f71d41315 100644
--- a/packages/accounts-google/package.js
+++ b/packages/accounts-google/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Login service for Google accounts",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/accounts-meetup/package.js b/packages/accounts-meetup/package.js
index 076b96fe8e..637ab50659 100644
--- a/packages/accounts-meetup/package.js
+++ b/packages/accounts-meetup/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Login service for Meetup accounts",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/accounts-meteor-developer/package.js b/packages/accounts-meteor-developer/package.js
index 858cca3064..d15392912e 100644
--- a/packages/accounts-meteor-developer/package.js
+++ b/packages/accounts-meteor-developer/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Login service for Meteor developer accounts",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/accounts-oauth/package.js b/packages/accounts-oauth/package.js
index 9b9b99d7d2..ca6ba361c6 100644
--- a/packages/accounts-oauth/package.js
+++ b/packages/accounts-oauth/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Common code for OAuth-based login services",
-  version: "1.1.14-rc.2"
+  version: "1.1.14"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/accounts-password/package.js b/packages/accounts-password/package.js
index c39745b02e..430906f856 100644
--- a/packages/accounts-password/package.js
+++ b/packages/accounts-password/package.js
@@ -1,27 +1,27 @@
 Package.describe({
   summary: "Password support for accounts",
-  version: "1.3.1-rc.2"
+  version: "1.3.1"
 });
 
 Package.onUse(function(api) {
-  api.use('npm-bcrypt@0.9.0', 'server');
+  api.use('npm-bcrypt', 'server');
 
   api.use([
-    'accounts-base@1.2.10',
-    'srp@1.0.9',
-    'sha@1.0.8',
-    'ejson@1.0.12',
-    'ddp@1.2.5'
+    'accounts-base',
+    'srp',
+    'sha',
+    'ejson',
+    'ddp'
   ], ['client', 'server']);
 
   // Export Accounts (etc) to packages using this one.
-  api.imply('accounts-base@1.2.10', ['client', 'server']);
+  api.imply('accounts-base', ['client', 'server']);
 
-  api.use('email@1.1.16', ['server']);
-  api.use('random@1.0.10', ['server']);
-  api.use('check@1.2.3');
-  api.use('underscore@1.0.9');
-  api.use('ecmascript@0.5.7');
+  api.use('email', ['server']);
+  api.use('random', ['server']);
+  api.use('check');
+  api.use('underscore');
+  api.use('ecmascript');
 
   api.addFiles('email_templates.js', 'server');
   api.addFiles('password_server.js', 'server');
diff --git a/packages/accounts-twitter/package.js b/packages/accounts-twitter/package.js
index 67a9142d84..82ca9e64c8 100644
--- a/packages/accounts-twitter/package.js
+++ b/packages/accounts-twitter/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Login service for Twitter accounts",
-  version: "1.1.12-rc.2"
+  version: "1.1.12"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/accounts-ui-unstyled/package.js b/packages/accounts-ui-unstyled/package.js
index 5186028d77..89de1e7976 100644
--- a/packages/accounts-ui-unstyled/package.js
+++ b/packages/accounts-ui-unstyled/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Unstyled version of login widgets",
-  version: "1.1.13-rc.2"
+  version: "1.1.13"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/accounts-weibo/package.js b/packages/accounts-weibo/package.js
index bfb8438ff7..830c9a5748 100644
--- a/packages/accounts-weibo/package.js
+++ b/packages/accounts-weibo/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Login service for Sina Weibo accounts",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/appcache/package.js b/packages/appcache/package.js
index 0cd5db5e0d..78c0652a10 100644
--- a/packages/appcache/package.js
+++ b/packages/appcache/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Enable the application cache in the browser",
-  version: "1.0.12-rc.2"
+  version: "1.0.12"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/autoupdate/package.js b/packages/autoupdate/package.js
index 70a0e21924..642f3c2c1c 100644
--- a/packages/autoupdate/package.js
+++ b/packages/autoupdate/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Update the client when new client code is available",
-  version: '1.3.12-rc.2'
+  version: '1.3.12'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/babel-compiler/babel.js b/packages/babel-compiler/babel.js
index 8212945501..fc20af1d6e 100644
--- a/packages/babel-compiler/babel.js
+++ b/packages/babel-compiler/babel.js
@@ -1,9 +1,9 @@
-var meteorBabel = Npm.require('meteor-babel');
-
 /**
  * Returns a new object containing default options appropriate for
  */
 function getDefaultOptions(extraFeatures) {
+  var meteorBabel = Npm.require('meteor-babel');
+
   // See https://github.com/meteor/babel/blob/master/options.js for more
   // information about what the default options are.
   var options = meteorBabel.getDefaultOptions(extraFeatures);
@@ -22,11 +22,12 @@ Babel = {
   validateExtraFeatures: Function.prototype,
 
   compile: function (source, options) {
+    var meteorBabel = Npm.require('meteor-babel');
     options = options || getDefaultOptions();
     return meteorBabel.compile(source, options);
   },
 
   setCacheDir: function (cacheDir) {
-    meteorBabel.setCacheDir(cacheDir);
+    Npm.require('meteor-babel').setCacheDir(cacheDir);
   }
 };
diff --git a/packages/babel-compiler/package.js b/packages/babel-compiler/package.js
index d22eb8630b..24bff99a4d 100644
--- a/packages/babel-compiler/package.js
+++ b/packages/babel-compiler/package.js
@@ -6,7 +6,7 @@ Package.describe({
   // isn't possible because you can't publish a non-recommended
   // release with package versions that don't have a pre-release
   // identifier at the end (eg, -dev)
-  version: '6.13.0-rc.2'
+  version: '6.13.0'
 });
 
 Npm.depends({
diff --git a/packages/babel-runtime/package.js b/packages/babel-runtime/package.js
index bb1bc9a05d..41a4e9224c 100644
--- a/packages/babel-runtime/package.js
+++ b/packages/babel-runtime/package.js
@@ -1,7 +1,7 @@
 Package.describe({
   name: "babel-runtime",
   summary: "Runtime support for output of Babel transpiler",
-  version: '0.1.12-rc.2',
+  version: '0.1.12',
   documentation: 'README.md'
 });
 
diff --git a/packages/base64/package.js b/packages/base64/package.js
index 4548d124f8..7d4742aea2 100644
--- a/packages/base64/package.js
+++ b/packages/base64/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Base64 encoding and decoding",
-  version: '1.0.10-rc.2'
+  version: '1.0.10'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/binary-heap/package.js b/packages/binary-heap/package.js
index 2e944f84f2..262bb06acd 100644
--- a/packages/binary-heap/package.js
+++ b/packages/binary-heap/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Binary Heap datastructure implementation",
-  version: '1.0.10-rc.2'
+  version: '1.0.10'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/boilerplate-generator/package.js b/packages/boilerplate-generator/package.js
index fff1fe41d6..357701a5a2 100644
--- a/packages/boilerplate-generator/package.js
+++ b/packages/boilerplate-generator/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Generates the boilerplate html from program's manifest",
-  version: '1.0.11-rc.2'
+  version: '1.0.11'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/browser-policy-common/package.js b/packages/browser-policy-common/package.js
index ab0e5e397b..85c2554c3e 100644
--- a/packages/browser-policy-common/package.js
+++ b/packages/browser-policy-common/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Common code for browser-policy packages",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/browser-policy-content/package.js b/packages/browser-policy-content/package.js
index 7c6ce008c6..4abffcb51e 100644
--- a/packages/browser-policy-content/package.js
+++ b/packages/browser-policy-content/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Configure content security policies",
-  version: "1.0.12-rc.2"
+  version: "1.0.12"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/browser-policy-framing/package.js b/packages/browser-policy-framing/package.js
index 4882888677..a9ebddde15 100644
--- a/packages/browser-policy-framing/package.js
+++ b/packages/browser-policy-framing/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Restrict which websites can frame your app",
-  version: "1.0.12-rc.2"
+  version: "1.0.12"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/caching-compiler/package.js b/packages/caching-compiler/package.js
index a70a141e5c..88795d4906 100644
--- a/packages/caching-compiler/package.js
+++ b/packages/caching-compiler/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: 'caching-compiler',
-  version: '1.1.8-rc.2',
+  version: '1.1.8',
   summary: 'An easy way to make compiler plugins cache',
   documentation: 'README.md'
 });
diff --git a/packages/callback-hook/package.js b/packages/callback-hook/package.js
index f9c87fc283..ece4b39e27 100644
--- a/packages/callback-hook/package.js
+++ b/packages/callback-hook/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Register callbacks on a hook",
-  version: '1.0.10-rc.2'
+  version: '1.0.10'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/check/package.js b/packages/check/package.js
index 83af2c52f2..f279ac070f 100644
--- a/packages/check/package.js
+++ b/packages/check/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Check whether a value matches a pattern",
-  version: '1.2.4-rc.2'
+  version: '1.2.4'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/code-prettify/package.js b/packages/code-prettify/package.js
index 9d75a26f8b..abe0277061 100644
--- a/packages/code-prettify/package.js
+++ b/packages/code-prettify/package.js
@@ -8,7 +8,7 @@ var path = Npm.require('path');
 
 Package.describe({
   summary: "Syntax highlighting of code, from Google",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 // XXX this code dumps symbols into the global namespace (directly
diff --git a/packages/coffeescript-test-helper/package.js b/packages/coffeescript-test-helper/package.js
index 7ee8137281..b79b10367e 100644
--- a/packages/coffeescript-test-helper/package.js
+++ b/packages/coffeescript-test-helper/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Used by the coffeescript package's tests",
-  version: "1.0.8-rc.2"
+  version: "1.0.8"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/coffeescript/package.js b/packages/coffeescript/package.js
index a80bc74c9a..10a14b4c3f 100644
--- a/packages/coffeescript/package.js
+++ b/packages/coffeescript/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Javascript dialect with fewer braces and semicolons",
-  version: "1.11.1-2-rc.2"
+  version: "1.11.1_2"
 });
 
 Package.registerBuildPlugin({
diff --git a/packages/constraint-solver/package.js b/packages/constraint-solver/package.js
index 81aacfc815..5f8f368bc9 100644
--- a/packages/constraint-solver/package.js
+++ b/packages/constraint-solver/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Given the set of the constraints, picks a satisfying configuration",
-  version: "1.1.1-rc.2"
+  version: "1.1.1"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/crosswalk/package.js b/packages/crosswalk/package.js
index 77beb28e2c..ea2a82118b 100644
--- a/packages/crosswalk/package.js
+++ b/packages/crosswalk/package.js
@@ -1,7 +1,7 @@
 Package.describe({
   summary: "Makes your Cordova application use the Crosswalk WebView \
 instead of the System WebView on Android",
-  version: '1.7.0-rc.2',
+  version: '1.7.0',
   documentation: null
 });
 
diff --git a/packages/ddp-client/package.js b/packages/ddp-client/package.js
index 87872d2ca1..7816884263 100644
--- a/packages/ddp-client/package.js
+++ b/packages/ddp-client/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Meteor's latency-compensated distributed data client",
-  version: '1.3.2-rc.2',
+  version: '1.3.2',
   documentation: null
 });
 
diff --git a/packages/ddp-common/package.js b/packages/ddp-common/package.js
index 91e974b445..341bca27ad 100644
--- a/packages/ddp-common/package.js
+++ b/packages/ddp-common/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Code shared beween ddp-client and ddp-server",
-  version: '1.2.7-rc.2',
+  version: '1.2.7',
   documentation: null
 });
 
diff --git a/packages/ddp-rate-limiter/package.js b/packages/ddp-rate-limiter/package.js
index 9c6db5f677..c442b116f9 100644
--- a/packages/ddp-rate-limiter/package.js
+++ b/packages/ddp-rate-limiter/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: 'ddp-rate-limiter',
-  version: '1.0.6-rc.2',
+  version: '1.0.6',
   // Brief, one-line summary of the package.
   summary: 'The DDPRateLimiter allows users to add rate limits to DDP' +
   ' methods and subscriptions.',
diff --git a/packages/ddp-server/package.js b/packages/ddp-server/package.js
index 5f59529af0..46975fff25 100644
--- a/packages/ddp-server/package.js
+++ b/packages/ddp-server/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Meteor's latency-compensated distributed data server",
-  version: '1.3.11-rc.2',
+  version: '1.3.11',
   documentation: null
 });
 
diff --git a/packages/diff-sequence/package.js b/packages/diff-sequence/package.js
index d0687b886a..0725708bdc 100644
--- a/packages/diff-sequence/package.js
+++ b/packages/diff-sequence/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "An implementation of a diff algorithm on arrays and objects.",
-  version: '1.0.7-rc.2',
+  version: '1.0.7',
   documentation: null
 });
 
diff --git a/packages/ecmascript-runtime/package.js b/packages/ecmascript-runtime/package.js
index ef3b8b1fef..78b193e14e 100644
--- a/packages/ecmascript-runtime/package.js
+++ b/packages/ecmascript-runtime/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: "ecmascript-runtime",
-  version: "0.3.15-rc.2",
+  version: "0.3.15",
   summary: "Polyfills for new ECMAScript 2015 APIs like Map and Set",
   git: "https://github.com/meteor/ecmascript-runtime",
   documentation: "README.md"
diff --git a/packages/ecmascript/package.js b/packages/ecmascript/package.js
index d70ae82d91..1678e3063f 100644
--- a/packages/ecmascript/package.js
+++ b/packages/ecmascript/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: 'ecmascript',
-  version: '0.5.9-rc.2',
+  version: '0.5.9',
   summary: 'Compiler plugin that supports ES2015+ in all .js files',
   documentation: 'README.md'
 });
diff --git a/packages/ejson/package.js b/packages/ejson/package.js
index 69c9d4d2a5..27c712f5a3 100644
--- a/packages/ejson/package.js
+++ b/packages/ejson/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Extended and Extensible JSON library",
-  version: '1.0.13-rc.2'
+  version: '1.0.13'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/email/package.js b/packages/email/package.js
index a08c273773..dad8b2d8b3 100644
--- a/packages/email/package.js
+++ b/packages/email/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Send email messages",
-  version: "1.1.18-rc.2"
+  version: "1.1.18"
 });
 
 Npm.depends({
diff --git a/packages/es5-shim/package.js b/packages/es5-shim/package.js
index 391f2bbc70..e114a1b51a 100644
--- a/packages/es5-shim/package.js
+++ b/packages/es5-shim/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: "es5-shim",
-  version: "4.6.15-rc.2",
+  version: "4.6.15",
   summary: "Shims and polyfills to improve ECMAScript 5 support",
   documentation: "README.md"
 });
diff --git a/packages/facebook/package.js b/packages/facebook/package.js
index b20a0f9984..1d8cbc7539 100644
--- a/packages/facebook/package.js
+++ b/packages/facebook/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Facebook OAuth flow",
-  version: "1.2.10-rc.2"
+  version: "1.2.10"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/facts/package.js b/packages/facts/package.js
index 16ae442bcd..1c73053180 100644
--- a/packages/facts/package.js
+++ b/packages/facts/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Publish internal app statistics",
-  version: '1.0.9-rc.2'
+  version: '1.0.9'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/fastclick/package.js b/packages/fastclick/package.js
index 401d0b5531..bef7ca2e6e 100755
--- a/packages/fastclick/package.js
+++ b/packages/fastclick/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Faster touch events on mobile",
-  version: '1.0.13-rc.2'
+  version: '1.0.13'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/force-ssl/package.js b/packages/force-ssl/package.js
index f594861649..76f2e6a095 100644
--- a/packages/force-ssl/package.js
+++ b/packages/force-ssl/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Require this application to use HTTPS",
-  version: "1.0.13-rc.2",
+  version: "1.0.13",
   prodOnly: true
 });
 
diff --git a/packages/geojson-utils/package.js b/packages/geojson-utils/package.js
index 0fff917a6c..5ae045b046 100644
--- a/packages/geojson-utils/package.js
+++ b/packages/geojson-utils/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: 'GeoJSON utility functions (from https://github.com/maxogden/geojson-js-utils)',
-  version: '1.0.10-rc.2'
+  version: '1.0.10'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/github/package.js b/packages/github/package.js
index 8c0fcda8f3..4481a19963 100644
--- a/packages/github/package.js
+++ b/packages/github/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Github OAuth flow",
-  version: "1.1.9-rc.2"
+  version: "1.1.9"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/google/package.js b/packages/google/package.js
index f2c5f7a367..ef74f1aee7 100644
--- a/packages/google/package.js
+++ b/packages/google/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Google OAuth flow",
-  version: "1.1.15-rc.2"
+  version: "1.1.15"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/http/package.js b/packages/http/package.js
index 6c5ef61ba8..1f84883aa1 100644
--- a/packages/http/package.js
+++ b/packages/http/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Make HTTP calls to remote servers",
-  version: '1.2.10-rc.2'
+  version: '1.2.10'
 });
 
 Npm.depends({
diff --git a/packages/id-map/package.js b/packages/id-map/package.js
index ba61ce7ac3..a1931eb94f 100644
--- a/packages/id-map/package.js
+++ b/packages/id-map/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Dictionary data structure allowing non-string keys",
-  version: '1.0.9-rc.2'
+  version: '1.0.9'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/jquery/package.js b/packages/jquery/package.js
index b65b8f4597..30fc96b32b 100644
--- a/packages/jquery/package.js
+++ b/packages/jquery/package.js
@@ -5,7 +5,7 @@ Package.describe({
   // patch number instead of the wrap number, we're higher than that.
   // In fairness, there's no way to make an RC of a new version without
   // bumping the patch number.
-  version: '1.11.10-rc.2'
+  version: '1.11.10'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/jshint/package.js b/packages/jshint/package.js
index 93e88edb2a..431da88126 100644
--- a/packages/jshint/package.js
+++ b/packages/jshint/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: 'jshint',
-  version: '1.1.7-rc.2',
+  version: '1.1.7',
   summary: 'Lint all your JavaScript files with JSHint.',
   documentation: 'README.md'
 });
diff --git a/packages/jsparse/package.js b/packages/jsparse/package.js
index bb9818b12a..5e3f58d85e 100644
--- a/packages/jsparse/package.js
+++ b/packages/jsparse/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Full-featured JavaScript parser",
-  version: "1.0.10-rc.2"
+  version: "1.0.10"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/launch-screen/package.js b/packages/launch-screen/package.js
index 115faf0765..9184130ea7 100644
--- a/packages/launch-screen/package.js
+++ b/packages/launch-screen/package.js
@@ -6,7 +6,7 @@ Package.describe({
   // between such packages and the build tool.
   name: 'launch-screen',
   summary: 'Default and customizable launch screen on mobile.',
-  version: '1.1.0-rc.2'
+  version: '1.1.0'
 });
 
 Cordova.depends({
diff --git a/packages/less/package.js b/packages/less/package.js
index 5daf17549a..e3c89499e6 100644
--- a/packages/less/package.js
+++ b/packages/less/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: 'less',
-  version: '2.7.6-rc.2',
+  version: '2.7.6',
   summary: 'Leaner CSS language',
   documentation: 'README.md'
 });
diff --git a/packages/localstorage/package.js b/packages/localstorage/package.js
index fcaad84d8a..3b4cc80c50 100644
--- a/packages/localstorage/package.js
+++ b/packages/localstorage/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Simulates local storage on IE 6,7 using userData",
-  version: "1.0.12-rc.2"
+  version: "1.0.12"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/logging/package.js b/packages/logging/package.js
index 220caa62a8..deef99b0ca 100644
--- a/packages/logging/package.js
+++ b/packages/logging/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Logging facility.",
-  version: '1.1.16-rc.2'
+  version: '1.1.16'
 });
 
 Npm.depends({
diff --git a/packages/logic-solver/package.js b/packages/logic-solver/package.js
index f2d905766d..f173dd5633 100644
--- a/packages/logic-solver/package.js
+++ b/packages/logic-solver/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "General satisfiability solver for logic problems",
-  version: '2.0.7-rc.2'
+  version: '2.0.7'
 });
 
 Package.on_use(function (api) {
diff --git a/packages/markdown/package.js b/packages/markdown/package.js
index 69fdc9d88f..0c97f5126a 100644
--- a/packages/markdown/package.js
+++ b/packages/markdown/package.js
@@ -2,7 +2,7 @@
 
 Package.describe({
   summary: "Markdown-to-HTML processor",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/meetup/package.js b/packages/meetup/package.js
index e2c578e659..ef51925996 100644
--- a/packages/meetup/package.js
+++ b/packages/meetup/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Meetup OAuth flow",
-  version: "1.6.5-rc.2"
+  version: "1.6.5"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/meteor-developer/package.js b/packages/meteor-developer/package.js
index f80b67a088..1453ce78b1 100644
--- a/packages/meteor-developer/package.js
+++ b/packages/meteor-developer/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Meteor developer accounts OAuth flow",
-  version: "1.1.10-rc.2"
+  version: "1.1.10"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/meteor-tool/package.js b/packages/meteor-tool/package.js
index 042e251ce4..8c64e92fd7 100644
--- a/packages/meteor-tool/package.js
+++ b/packages/meteor-tool/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "The Meteor command-line tool",
-  version: '1.4.2-rc.2'
+  version: '1.4.2'
 });
 
 Package.includeTool();
diff --git a/packages/meteor/package.js b/packages/meteor/package.js
index 4d351cf781..2753bc79a1 100644
--- a/packages/meteor/package.js
+++ b/packages/meteor/package.js
@@ -2,7 +2,7 @@
 
 Package.describe({
   summary: "Core Meteor environment",
-  version: '1.6.0-rc.2'
+  version: '1.6.0'
 });
 
 Package.registerBuildPlugin({
diff --git a/packages/meteor/startup_server.js b/packages/meteor/startup_server.js
index 2a08396ac1..7d60372b5b 100644
--- a/packages/meteor/startup_server.js
+++ b/packages/meteor/startup_server.js
@@ -1,4 +1,19 @@
-Meteor.startup = function (callback) {
+Meteor.startup = function startup(callback) {
+  if (process.env.METEOR_PROFILE) {
+    // Create a temporary error to capture the current stack trace.
+    var error = new Error("Meteor.startup");
+
+    // Capture the stack trace of the Meteor.startup call, excluding the
+    // startup stack frame itself.
+    Error.captureStackTrace(error, startup);
+
+    callback.stack = error.stack
+      .split(/\n\s*/) // Split lines and remove leading whitespace.
+      .slice(0, 2) // Only include the call site.
+      .join(" ") // Collapse to one line.
+      .replace(/^Error: /, ""); // Not really an Error per se.
+  }
+
   if (__meteor_bootstrap__.startupHooks) {
     __meteor_bootstrap__.startupHooks.push(callback);
   } else {
diff --git a/packages/minifier-css/package.js b/packages/minifier-css/package.js
index 31de5188e6..b27a0d395a 100644
--- a/packages/minifier-css/package.js
+++ b/packages/minifier-css/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "CSS minifier",
-  version: "1.2.15-rc.2"
+  version: "1.2.15"
 });
 
 Npm.depends({
diff --git a/packages/minifier-js/package.js b/packages/minifier-js/package.js
index 1dcf7273fb..831c952eb2 100644
--- a/packages/minifier-js/package.js
+++ b/packages/minifier-js/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "JavaScript minifier",
-  version: "1.2.15-rc.2"
+  version: "1.2.15"
 });
 
 Npm.depends({
diff --git a/packages/minimongo/package.js b/packages/minimongo/package.js
index 89945954e8..8ae9f077c1 100644
--- a/packages/minimongo/package.js
+++ b/packages/minimongo/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Meteor's client-side datastore: a port of MongoDB to Javascript",
-  version: '1.0.18-rc.2'
+  version: '1.0.18'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/mobile-status-bar/package.js b/packages/mobile-status-bar/package.js
index 0a63caf5c0..48f264f1b1 100644
--- a/packages/mobile-status-bar/package.js
+++ b/packages/mobile-status-bar/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Good defaults for the mobile status bar",
-  version: "1.0.13-rc.2"
+  version: "1.0.13"
 });
 
 Cordova.depends({
diff --git a/packages/modules-runtime/.npm/package/npm-shrinkwrap.json b/packages/modules-runtime/.npm/package/npm-shrinkwrap.json
index 3d95f909ec..ceac639e6f 100644
--- a/packages/modules-runtime/.npm/package/npm-shrinkwrap.json
+++ b/packages/modules-runtime/.npm/package/npm-shrinkwrap.json
@@ -1,9 +1,9 @@
 {
   "dependencies": {
     "install": {
-      "version": "0.8.1",
-      "resolved": "https://registry.npmjs.org/install/-/install-0.8.1.tgz",
-      "from": "install@0.8.1"
+      "version": "0.8.2",
+      "resolved": "https://registry.npmjs.org/install/-/install-0.8.2.tgz",
+      "from": "install@0.8.2"
     }
   }
 }
diff --git a/packages/modules-runtime/modules-runtime.js b/packages/modules-runtime/modules-runtime.js
index b5f95185bc..30403e3fbc 100644
--- a/packages/modules-runtime/modules-runtime.js
+++ b/packages/modules-runtime/modules-runtime.js
@@ -4,6 +4,15 @@ var hasOwn = options.hasOwnProperty;
 // RegExp matching strings that don't start with a `.` or a `/`.
 var topLevelIdPattern = /^[^./]/;
 
+if (typeof Profile === "function" &&
+    process.env.METEOR_PROFILE) {
+  options.wrapRequire = function (require) {
+    return Profile(function (id) {
+      return "require(" + JSON.stringify(id) + ")";
+    }, require);
+  };
+}
+
 // This function will be called whenever a module identifier that hasn't
 // been installed is required. For backwards compatibility, and so that we
 // can require binary dependencies on the server, we implement the
diff --git a/packages/modules-runtime/package.js b/packages/modules-runtime/package.js
index 2ba8d41f41..2cf3791782 100644
--- a/packages/modules-runtime/package.js
+++ b/packages/modules-runtime/package.js
@@ -1,13 +1,13 @@
 Package.describe({
   name: "modules-runtime",
-  version: "0.7.7-rc.2",
+  version: "0.7.7",
   summary: "CommonJS module system",
   git: "https://github.com/benjamn/install",
   documentation: "README.md"
 });
 
 Npm.depends({
-  install: "0.8.1"
+  install: "0.8.2"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/modules/package.js b/packages/modules/package.js
index 112a3431c5..3b458fbb37 100644
--- a/packages/modules/package.js
+++ b/packages/modules/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: "modules",
-  version: "0.7.7-rc.2",
+  version: "0.7.7",
   summary: "CommonJS module system",
   documentation: "README.md"
 });
diff --git a/packages/mongo-id/package.js b/packages/mongo-id/package.js
index 226c6141d5..a3fc9342e3 100644
--- a/packages/mongo-id/package.js
+++ b/packages/mongo-id/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "JS simulation of MongoDB ObjectIDs",
-  version: '1.0.6-rc.2',
+  version: '1.0.6',
   documentation: null
 });
 
diff --git a/packages/mongo/package.js b/packages/mongo/package.js
index 16c471bc73..f03f3ac16a 100644
--- a/packages/mongo/package.js
+++ b/packages/mongo/package.js
@@ -9,7 +9,7 @@
 
 Package.describe({
   summary: "Adaptor for using MongoDB and Minimongo over DDP",
-  version: '1.1.14-rc.2'
+  version: '1.1.14'
 });
 
 Npm.depends({
diff --git a/packages/npm-bcrypt/package.js b/packages/npm-bcrypt/package.js
index 393f3d3071..b070cc4a05 100644
--- a/packages/npm-bcrypt/package.js
+++ b/packages/npm-bcrypt/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Wrapper around the bcrypt npm package",
-  version: "0.9.2-rc.2",
+  version: "0.9.2",
   documentation: null
 });
 
diff --git a/packages/npm-mongo/package.js b/packages/npm-mongo/package.js
index 83aaf2b551..8a21cb4846 100644
--- a/packages/npm-mongo/package.js
+++ b/packages/npm-mongo/package.js
@@ -3,7 +3,7 @@
 
 Package.describe({
   summary: "Wrapper around the mongo npm package",
-  version: '2.2.11-2-rc.2',
+  version: '2.2.11_2',
   documentation: null
 });
 
diff --git a/packages/oauth-encryption/package.js b/packages/oauth-encryption/package.js
index 1db2c208cc..9b622c4683 100644
--- a/packages/oauth-encryption/package.js
+++ b/packages/oauth-encryption/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Encrypt account secrets stored in the database",
-  version: '1.2.1-rc.2'
+  version: '1.2.1'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/oauth/package.js b/packages/oauth/package.js
index d04c28c24a..ed85871925 100644
--- a/packages/oauth/package.js
+++ b/packages/oauth/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Common code for OAuth-based services",
-  version: "1.1.12-rc.2"
+  version: "1.1.12"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/oauth1/package.js b/packages/oauth1/package.js
index 65fab9a84e..f86a19cab9 100644
--- a/packages/oauth1/package.js
+++ b/packages/oauth1/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Common code for OAuth1-based login services",
-  version: "1.1.11-rc.2"
+  version: "1.1.11"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/oauth2/package.js b/packages/oauth2/package.js
index 28cddf4f5c..c73f05e6de 100644
--- a/packages/oauth2/package.js
+++ b/packages/oauth2/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Common code for OAuth2-based login services",
-  version: "1.1.11-rc.2"
+  version: "1.1.11"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/observe-sequence/package.js b/packages/observe-sequence/package.js
index b33f3aca53..4a18677f95 100644
--- a/packages/observe-sequence/package.js
+++ b/packages/observe-sequence/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Observe changes to various sequence types such as arrays, cursors and objects",
-  version: "1.0.14-rc.2"
+  version: "1.0.14"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/ordered-dict/package.js b/packages/ordered-dict/package.js
index 2e6f8d1b55..3e9af08368 100644
--- a/packages/ordered-dict/package.js
+++ b/packages/ordered-dict/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Ordered traversable dictionary with a mutable ordering",
-  version: '1.0.9-rc.2',
+  version: '1.0.9',
   documentation: null
 });
 
diff --git a/packages/package-version-parser/package.js b/packages/package-version-parser/package.js
index e1cb117693..601910f00f 100644
--- a/packages/package-version-parser/package.js
+++ b/packages/package-version-parser/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Parses Meteor Smart Package version strings",
-  version: "3.0.10-rc.2"
+  version: "3.0.10"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/preserve-inputs/package.js b/packages/preserve-inputs/package.js
index bcac6f058f..aade8591ae 100644
--- a/packages/preserve-inputs/package.js
+++ b/packages/preserve-inputs/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Deprecated package (now empty)",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/promise/package.js b/packages/promise/package.js
index cf654a050f..b4049ed53a 100644
--- a/packages/promise/package.js
+++ b/packages/promise/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: "promise",
-  version: "0.8.8-rc.2",
+  version: "0.8.8",
   summary: "ECMAScript 2015 Promise polyfill with Fiber support",
   git: "https://github.com/meteor/promise",
   documentation: "README.md"
diff --git a/packages/rate-limit/package.js b/packages/rate-limit/package.js
index 48ded85b31..06f92b3e2a 100644
--- a/packages/rate-limit/package.js
+++ b/packages/rate-limit/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: 'rate-limit',
-  version: '1.0.6-rc.2',
+  version: '1.0.6',
   // Brief, one-line summary of the package.
   summary: 'An algorithm for rate limiting anything',
   // URL to the Git repository containing the source code for this package.
diff --git a/packages/reactive-var/package.js b/packages/reactive-var/package.js
index 48cae25d40..029608a876 100644
--- a/packages/reactive-var/package.js
+++ b/packages/reactive-var/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Reactive variable",
-  version: '1.0.11-rc.2'
+  version: '1.0.11'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/reload-safetybelt/package.js b/packages/reload-safetybelt/package.js
index 1e559f3ae3..153ed5268a 100644
--- a/packages/reload-safetybelt/package.js
+++ b/packages/reload-safetybelt/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Reload safety belt for multi-server deployments",
-  version: '1.0.11-rc.2'
+  version: '1.0.11'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/reload/package.js b/packages/reload/package.js
index 6911efb7ca..b1d955764f 100644
--- a/packages/reload/package.js
+++ b/packages/reload/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Reload the page while preserving application state.",
-  version: '1.1.11-rc.2'
+  version: '1.1.11'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/retry/package.js b/packages/retry/package.js
index f0ab768463..dfb443fe47 100644
--- a/packages/retry/package.js
+++ b/packages/retry/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Retry logic with exponential backoff",
-  version: '1.0.9-rc.2'
+  version: '1.0.9'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/routepolicy/package.js b/packages/routepolicy/package.js
index 7f9938554c..b443732575 100644
--- a/packages/routepolicy/package.js
+++ b/packages/routepolicy/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "route policy declarations",
-  version: '1.0.12-rc.2'
+  version: '1.0.12'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/service-configuration/package.js b/packages/service-configuration/package.js
index 4338dbefb2..5dc8795b9a 100644
--- a/packages/service-configuration/package.js
+++ b/packages/service-configuration/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Manage the configuration for third-party services",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/session/package.js b/packages/session/package.js
index 85c0671930..aaf70597e5 100644
--- a/packages/session/package.js
+++ b/packages/session/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Session variable",
-  version: '1.1.7-rc.2'
+  version: '1.1.7'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/sha/package.js b/packages/sha/package.js
index 9ea691890a..5d77ef40a4 100644
--- a/packages/sha/package.js
+++ b/packages/sha/package.js
@@ -1,5 +1,5 @@
 Package.describe({
-  version: '1.0.9-rc.2',
+  version: '1.0.9',
   summary: 'SHA256 implementation',
   git: 'https://github.com/meteor/meteor'
 });
diff --git a/packages/srp/package.js b/packages/srp/package.js
index 0a3ba3e3c0..b30f47df87 100644
--- a/packages/srp/package.js
+++ b/packages/srp/package.js
@@ -5,7 +5,7 @@
 
 Package.describe({
   summary: "Library for Secure Remote Password (SRP) exchanges",
-  version: "1.0.10-rc.2"
+  version: "1.0.10"
 });
 
 Package.onUse(function (api) {
diff --git a/packages/standard-minifier-css/package.js b/packages/standard-minifier-css/package.js
index 07fd802d14..08c4d4cd11 100644
--- a/packages/standard-minifier-css/package.js
+++ b/packages/standard-minifier-css/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: 'standard-minifier-css',
-  version: '1.3.1',
+  version: '1.3.2',
   summary: 'Standard css minifier used with Meteor apps by default.',
   documentation: 'README.md'
 });
diff --git a/packages/standard-minifier-js/package.js b/packages/standard-minifier-js/package.js
index 77f5220a5b..3393ed9d29 100644
--- a/packages/standard-minifier-js/package.js
+++ b/packages/standard-minifier-js/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: 'standard-minifier-js',
-  version: '1.2.1-rc.2',
+  version: '1.2.1',
   summary: 'Standard javascript minifiers used with Meteor apps by default.',
   documentation: 'README.md'
 });
diff --git a/packages/stylus/package.js b/packages/stylus/package.js
index 050b6ccb53..4c60e880f3 100644
--- a/packages/stylus/package.js
+++ b/packages/stylus/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: 'Expressive, dynamic, robust CSS',
-  version: "2.513.6-rc.2"
+  version: "2.513.6"
 });
 
 Package.registerBuildPlugin({
diff --git a/packages/test-helpers/package.js b/packages/test-helpers/package.js
index fb60bf4e0a..5875b895fb 100644
--- a/packages/test-helpers/package.js
+++ b/packages/test-helpers/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Utility functions for tests",
-  version: '1.0.11-rc.2'
+  version: '1.0.11'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/test-in-browser/package.js b/packages/test-in-browser/package.js
index ca0adc6d01..36cba98c44 100644
--- a/packages/test-in-browser/package.js
+++ b/packages/test-in-browser/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Run tests interactively in the browser",
-  version: '1.0.13-rc.2',
+  version: '1.0.13',
   documentation: null
 });
 
diff --git a/packages/test-in-console/package.js b/packages/test-in-console/package.js
index 6639225f46..50efe81ea0 100644
--- a/packages/test-in-console/package.js
+++ b/packages/test-in-console/package.js
@@ -1,10 +1,9 @@
 Package.describe({
   summary: "Run tests noninteractively, with results going to the console.",
-  version: '1.0.13-rc.2'
+  version: '1.0.14'
 });
 
 Package.onUse(function (api) {
-
   api.use(['tinytest', 'underscore', 'random', 'ejson', 'check']);
   api.use('http', 'server');
 
diff --git a/packages/test-server-tests-in-console-once/package.js b/packages/test-server-tests-in-console-once/package.js
index cde478c00d..a6278134f9 100644
--- a/packages/test-server-tests-in-console-once/package.js
+++ b/packages/test-server-tests-in-console-once/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Run server tests noninteractively, with results going to the console.",
-  version: '1.0.11-rc.2'
+  version: '1.0.11'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/tinytest/package.js b/packages/tinytest/package.js
index b197697346..7f9bd5eddd 100644
--- a/packages/tinytest/package.js
+++ b/packages/tinytest/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Tiny testing framework",
-  version: '1.0.12-rc.2'
+  version: '1.0.12'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/tracker/package.js b/packages/tracker/package.js
index 1252a8c70d..b3b886327f 100644
--- a/packages/tracker/package.js
+++ b/packages/tracker/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Dependency tracker to allow reactive callbacks",
-  version: '1.1.1-rc.2'
+  version: '1.1.1'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/twitter/package.js b/packages/twitter/package.js
index 78ee79aa64..6ecc3df7db 100644
--- a/packages/twitter/package.js
+++ b/packages/twitter/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Twitter OAuth flow",
-  version: '1.1.13-rc.2'
+  version: '1.1.13'
 });
 
 Package.onUse(function(api) {
diff --git a/packages/underscore/package.js b/packages/underscore/package.js
index 5f292ce0ce..483509a727 100644
--- a/packages/underscore/package.js
+++ b/packages/underscore/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Collection of small helpers: _.map, _.each, ...",
-  version: '1.0.10-rc.2'
+  version: '1.0.10'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/url/package.js b/packages/url/package.js
index cb1b32cfa1..7e507f83a0 100644
--- a/packages/url/package.js
+++ b/packages/url/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Utility code for constructing URLs",
-  version: "1.0.11-rc.2"
+  version: "1.0.11"
 });
 
 Package.onUse(function(api) {
diff --git a/packages/webapp/package.js b/packages/webapp/package.js
index 92c4928771..1be1c8129a 100644
--- a/packages/webapp/package.js
+++ b/packages/webapp/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Serves a Meteor app over HTTP",
-  version: '1.3.12-rc.2'
+  version: '1.3.12'
 });
 
 Npm.depends({connect: "2.30.2",
diff --git a/packages/weibo/package.js b/packages/weibo/package.js
index f13129c3c4..071153c0b6 100644
--- a/packages/weibo/package.js
+++ b/packages/weibo/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Weibo OAuth flow",
-  version: '1.1.9-rc.2'
+  version: '1.1.9'
 });
 
 Package.onUse(function(api) {
diff --git a/packages/xmlbuilder/package.js b/packages/xmlbuilder/package.js
index 04cc6ce880..305539606e 100644
--- a/packages/xmlbuilder/package.js
+++ b/packages/xmlbuilder/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "An XML builder for node.js similar to java-xmlbuilder.",
-  version: '2.5.15-rc.2'
+  version: '2.5.15'
 });
 
 Npm.depends({
diff --git a/scripts/admin/meteor-release-experimental.json b/scripts/admin/meteor-release-experimental.json
index c604006a1e..d1f42bbdc7 100644
--- a/scripts/admin/meteor-release-experimental.json
+++ b/scripts/admin/meteor-release-experimental.json
@@ -1,6 +1,6 @@
 {
  "track": "METEOR",
- "version": "1.4.2-rc.2",
+ "version": "1.4.2-rc.4",
  "recommended": false,
  "official": false,
  "description": "Meteor"
diff --git a/scripts/admin/meteor-release-official.json b/scripts/admin/meteor-release-official.json
index f44dc66103..71219f1d08 100644
--- a/scripts/admin/meteor-release-official.json
+++ b/scripts/admin/meteor-release-official.json
@@ -1,8 +1,7 @@
 {
   "track": "METEOR",
-  "version": "1.4.1.3",
+  "version": "1.4.2",
   "recommended": false,
   "official": true,
-  "description": "The Official Meteor Distribution",
-  "patchFrom": ["1.4.1.2"]
+  "description": "The Official Meteor Distribution"
 }
diff --git a/tools/fs/files.js b/tools/fs/files.js
index 9af4a79c78..82aba433b3 100644
--- a/tools/fs/files.js
+++ b/tools/fs/files.js
@@ -1451,6 +1451,9 @@ files.readLinkToMeteorScript = function (linkLocation, platform) {
 //   A helpful file to import for this purpose is colon-converter.js, which also
 //   knows how to convert various configuration file formats.
 
+// If this environment variable is set, fs.*Sync methods will always be used
+// by wrapFsFunc instead of yielding wrappers for asynchronous fs.* methods.
+const YIELD_ALLOWED = ! process.env.METEOR_DISABLE_FS_FIBERS;
 
 files.fsFixPath = {};
 /**
@@ -1485,7 +1488,11 @@ function wrapFsFunc(fsFuncName, pathArgIndices, options) {
         args[i] = files.convertToOSPath(args[i]);
       }
 
-      const canYield = Fiber.current && Fiber.yield && ! Fiber.yield.disallowed;
+      const canYield = YIELD_ALLOWED &&
+        Fiber.current &&
+        Fiber.yield &&
+        ! Fiber.yield.disallowed;
+
       const shouldBeSync = alwaysSync || sync;
       // There's some overhead in awaiting a Promise of an async call,
       // vs just doing the sync call, which for a call like "stat"
diff --git a/tools/isobuild/bundler.js b/tools/isobuild/bundler.js
index 93368cde88..022550d6c9 100644
--- a/tools/isobuild/bundler.js
+++ b/tools/isobuild/bundler.js
@@ -1639,7 +1639,9 @@ class JsImage {
       var env = _.extend({
         Package: ret,
         Npm: {
-          require: function (name) {
+          require: Profile(function (name) {
+            return "Npm.require(" + JSON.stringify(name) + ")";
+          }, function (name) {
             let fullPath;
 
             _.some(item.nodeModulesDirectories, nmd => {
@@ -1673,7 +1675,7 @@ class JsImage {
                   item.targetPath + ". Check your Npm.depends().");
               return undefined;
             }
-          }
+          })
         },
 
         /**
@@ -1709,6 +1711,7 @@ class JsImage {
 
       if (item.targetPath === "packages/modules-runtime.js") {
         env.npmRequire = self._makeNpmRequire(nodeModulesDirsByPackageName);
+        env.Profile = Profile;
       }
 
       try {
@@ -1808,18 +1811,17 @@ class JsImage {
 
   // Write this image out to disk
   //
-  // options:
-  // - includeNodeModules: falsy or 'symlink', documented on
-  //   exports.bundle.
-  //
   // Returns an object with the following keys:
   // - controlFile: the path (relative to 'builder') of the control file for
   // the image
   // - nodePath: an array of paths required to be set in the NODE_PATH
   // environment variable.
-  write(builder, options) {
+  write(builder, {
+    buildMode,
+    // falsy or 'symlink', documented on exports.bundle
+    includeNodeModules,
+  } = {}) {
     var self = this;
-    options = options || {};
 
     builder.reserve("program.json");
 
@@ -1831,15 +1833,15 @@ class JsImage {
       // We need to find the actual file system location for the node modules
       // this JS Image uses, so that we can add it to nodeModulesDirectories
       var modulesPhysicalLocation;
-      if (! options.includeNodeModules ||
-          options.includeNodeModules === 'symlink') {
+      if (! includeNodeModules ||
+          includeNodeModules === 'symlink') {
         modulesPhysicalLocation = nmd.getPreferredBundlePath("bundle");
       } else {
         // This is some option we didn't expect - someone has added another case
         // to the includeNodeModules option but didn't update this if block.
         // Fail hard.
         throw new Error("Option includeNodeModules wasn't falsy or 'symlink'. " +
-                        "It was: " + options.includeNodeModules);
+                        "It was: " + includeNodeModules);
       }
 
       nmd = nmd.copy();
@@ -1966,10 +1968,17 @@ class JsImage {
           from: nmd.sourcePath,
           to: nmd.preferredBundlePath,
           npmDiscards: nmd.npmDiscards,
-          symlink: (options.includeNodeModules === 'symlink')
+          symlink: includeNodeModules === 'symlink'
         };
 
         const prodPackagePredicate =
+          // This condition essentially means we don't strip devDependencies
+          // when running tests, which is important for use cases like the one
+          // described in #7953. Note that devDependencies can still be used
+          // when buildMode === "development" because the app has access to
+          // the original node_modules.
+          (buildMode === "production" ||
+           buildMode === "development") &&
           nmd.local && // Only filter local node_modules directories.
           nmd.getProdPackagePredicate();
 
@@ -2136,17 +2145,19 @@ class ServerTarget extends JsImageTarget {
   }
 
   // Output the finished target to disk
-  // options:
-  // - includeNodeModules: falsy or 'symlink', documented in
-  //   exports.bundle.
-  // - getRelativeTargetPath: a function that takes {forTarget:
-  //   Target, relativeTo: Target} and return the path of one target
-  //   in the bundle relative to another. hack to get the path of the
-  //   client target.. we'll find a better solution here eventually
   //
   // Returns the path (relative to 'builder') of the control file for
   // the plugin and the required NODE_PATH.
-  write(builder, options) {
+  write(builder, {
+    buildMode,
+    // falsy or 'symlink', documented in exports.bundle
+    includeNodeModules,
+    // a function that takes {forTarget: Target, relativeTo: Target} and
+    // return the path of one target in the bundle relative to another. hack
+    // to get the path of the client target.. we'll find a better solution
+    // here eventually
+    getRelativeTargetPath,
+  }) {
     var self = this;
     var nodePath = [];
 
@@ -2158,8 +2169,10 @@ class ServerTarget extends JsImageTarget {
     var clientTargetPaths = {};
     if (self.clientTargets) {
       _.each(self.clientTargets, function (target) {
-        clientTargetPaths[target.arch] = files.pathJoin(options.getRelativeTargetPath({
-          forTarget: target, relativeTo: self}), 'program.json');
+        clientTargetPaths[target.arch] = files.pathJoin(getRelativeTargetPath({
+          forTarget: target,
+          relativeTo: self,
+        }), 'program.json');
       });
     }
 
@@ -2197,11 +2210,11 @@ class ServerTarget extends JsImageTarget {
     // This is a hack to make 'meteor run' faster (so you don't have to run 'npm
     // install' using the above package.json and npm-shrinkwrap.json on every
     // rebuild).
-    if (options.includeNodeModules === 'symlink') {
+    if (includeNodeModules === 'symlink') {
       builder.write('node_modules', {
         symlink: files.pathJoin(files.getDevBundle(), 'server-lib', 'node_modules')
       });
-    } else if (options.includeNodeModules) {
+    } else if (includeNodeModules) {
       // This is some option we didn't expect - someone has added another case
       // to the includeNodeModules option but didn't update this if block. Fail
       // hard.
@@ -2211,7 +2224,17 @@ class ServerTarget extends JsImageTarget {
     // Linked JavaScript image (including static assets, assuming that there are
     // any JS files at all)
     var jsImage = self.toJsImage();
-    jsImage.write(builder, { includeNodeModules: options.includeNodeModules });
+    jsImage.write(builder, {
+      buildMode,
+      includeNodeModules,
+    });
+
+    const toolsDir = files.pathDirname(
+      files.convertToStandardPath(__dirname));
+
+    builder.write("profile.js", {
+      file: files.pathJoin(toolsDir, "tool-env", "profile.js"),
+    });
 
     // Server bootstrap
     _.each([
@@ -2225,7 +2248,7 @@ class ServerTarget extends JsImageTarget {
     ], function (filename) {
       builder.write(filename, {
         file: files.pathJoin(
-          files.pathDirname(files.convertToStandardPath(__dirname)),
+          toolsDir,
           'static-assets',
           'server',
           filename
@@ -2288,15 +2311,20 @@ var writeTargetToPath = Profile(
     includeNodeModules,
     getRelativeTargetPath,
     previousBuilder,
-    minifyMode
+    buildMode,
+    minifyMode,
   }) {
     var builder = new Builder({
       outputPath: files.pathJoin(outputPath, 'programs', name),
       previousBuilder
     });
 
-    var targetBuild = target.write(
-      builder, {includeNodeModules, getRelativeTargetPath, minifyMode});
+    var targetBuild = target.write(builder, {
+      includeNodeModules,
+      getRelativeTargetPath,
+      buildMode,
+      minifyMode,
+    });
 
     builder.complete();
 
@@ -2344,6 +2372,7 @@ var writeSiteArchive = Profile("bundler writeSiteArchive", function (
     releaseName,
     getRelativeTargetPath,
     previousBuilders,
+    buildMode,
     minifyMode
   }) {
 
@@ -2429,6 +2458,7 @@ Find out more about Meteor at meteor.com.
           releaseName,
           getRelativeTargetPath,
           previousBuilder,
+          buildMode,
           minifyMode
         });
 
@@ -2744,7 +2774,9 @@ function bundle({
           const previousBuilder = previousBuilders && previousBuilders[name];
           var targetBuild = writeTargetToPath(
             name, target, outputPath,
-            _.extend({}, writeOptions, {previousBuilder})
+            _.extend({
+              buildMode: buildOptions.buildMode,
+            }, writeOptions, {previousBuilder})
          );
           nodePath = nodePath.concat(targetBuild.nodePath);
           clientWatchSet.merge(target.getWatchSet());
@@ -2754,7 +2786,9 @@ function bundle({
         starResult = writeSiteArchive(
           targets,
           outputPath,
-          _.extend({}, writeOptions, {previousBuilders})
+          _.extend({
+            buildMode: buildOptions.buildMode,
+          }, writeOptions, {previousBuilders})
         );
 
         nodePath = nodePath.concat(starResult.nodePath);
diff --git a/tools/isobuild/compiler-plugin.js b/tools/isobuild/compiler-plugin.js
index 635db78b76..2fe35344ca 100644
--- a/tools/isobuild/compiler-plugin.js
+++ b/tools/isobuild/compiler-plugin.js
@@ -62,7 +62,7 @@ import { isTestFilePath } from './test-files.js';
 // Cache the (slightly post-processed) results of linker.fullLink.
 const CACHE_SIZE = process.env.METEOR_LINKER_CACHE_SIZE || 1024*1024*100;
 const CACHE_DEBUG = !! process.env.METEOR_TEST_PRINT_LINKER_CACHE_DEBUG;
-const LINKER_CACHE_SALT = 10; // Increment this number to force relinking.
+const LINKER_CACHE_SALT = 11; // Increment this number to force relinking.
 const LINKER_CACHE = new LRU({
   max: CACHE_SIZE,
   // Cache is measured in bytes. We don't care about servePath.
diff --git a/tools/isobuild/compiler.js b/tools/isobuild/compiler.js
index eeb1643166..23afa1417e 100644
--- a/tools/isobuild/compiler.js
+++ b/tools/isobuild/compiler.js
@@ -34,7 +34,7 @@ var compiler = exports;
 // dependencies. (At least for now, packages only used in target creation (eg
 // minifiers) don't require you to update BUILT_BY, though you will need to quit
 // and rerun "meteor run".)
-compiler.BUILT_BY = 'meteor/23';
+compiler.BUILT_BY = 'meteor/24';
 
 // This is a list of all possible architectures that a build can target. (Client
 // is expanded into 'web.browser' and 'web.cordova')
diff --git a/tools/isobuild/import-scanner.js b/tools/isobuild/import-scanner.js
index 02e64d2a9f..1649e37567 100644
--- a/tools/isobuild/import-scanner.js
+++ b/tools/isobuild/import-scanner.js
@@ -581,6 +581,21 @@ export default class ImportScanner {
   }
 
   _readModule(absPath) {
+    let ext = pathExtname(absPath).toLowerCase();
+
+    if (ext === ".node") {
+      const dataString = "throw new Error(" + JSON.stringify(
+        this.isWeb()
+          ? "cannot load native .node modules on the client"
+          : "module.useNode() must succeed for native .node modules"
+      ) + ");\n";
+
+      const data = new Buffer(dataString, "utf8");
+      const hash = sha1(data);
+
+      return { data, dataString, hash };
+    }
+
     try {
       var info = this._readFile(absPath);
     } catch (e) {
@@ -598,7 +613,6 @@ export default class ImportScanner {
       info.dataString = info.dataString.slice(1);
     }
 
-    let ext = pathExtname(absPath).toLowerCase();
     if (! has(defaultExtensionHandlers, ext)) {
       if (canBeParsedAsPlainJS(dataString)) {
         ext = ".js";
diff --git a/tools/static-assets/server/boot.js b/tools/static-assets/server/boot.js
index 5dd474e375..8e58b9e3b4 100644
--- a/tools/static-assets/server/boot.js
+++ b/tools/static-assets/server/boot.js
@@ -8,6 +8,7 @@ var sourcemap_support = require('source-map-support');
 var bootUtils = require('./boot-utils.js');
 var files = require('./mini-files.js');
 var npmRequire = require('./npm-require.js').require;
+var Profile = require('./profile.js').Profile;
 
 // This code is duplicated in tools/main.js.
 var MIN_NODE_VERSION = 'v0.10.41';
@@ -123,8 +124,7 @@ var startCheckForLiveParent = function (parentPid) {
   }
 };
 
-
-Fiber(function () {
+var loadServerBundles = Profile("Load server bundles", function () {
   _.each(serverJson.load, function (fileInfo) {
     var code = fs.readFileSync(path.resolve(serverDir, fileInfo.path));
     var nonLocalNodeModulesPaths = [];
@@ -161,7 +161,9 @@ Fiber(function () {
        * @locus Server
        * @memberOf Npm
        */
-      require: function (name) {
+      require: Profile(function getBucketName(name) {
+        return "Npm.require(" + JSON.stringify(name) + ")";
+      }, function (name) {
         if (nonLocalNodeModulesPaths.length === 0) {
           return require(name);
         }
@@ -200,7 +202,7 @@ Fiber(function () {
               "'. Did you forget to call 'Npm.depends' in package.js " +
               "within the '" + packageName + "' package?");
           }
-      }
+      })
     };
     var getAsset = function (assetPath, encoding, callback) {
       var fut;
@@ -264,7 +266,7 @@ Fiber(function () {
 
     var wrapParts = ["(function(Npm,Assets"];
     if (isModulesRuntime) {
-      wrapParts.push(",npmRequire");
+      wrapParts.push(",npmRequire,Profile");
     }
     // \n is necessary in case final line is a //-comment
     wrapParts.push("){", code, "\n})");
@@ -287,20 +289,25 @@ Fiber(function () {
     var func = require('vm').runInThisContext(wrapped, scriptPath, true);
     var args = [Npm, Assets];
     if (isModulesRuntime) {
-      args.push(npmRequire);
+      args.push(npmRequire, Profile);
     }
-    func.apply(global, args);
-  });
 
+    Profile(fileInfo.path, func).apply(global, args);
+  });
+});
+
+var callStartupHooks = Profile("Call Meteor.startup hooks", function () {
   // run the user startup hooks.  other calls to startup() during this can still
   // add hooks to the end.
   while (__meteor_bootstrap__.startupHooks.length) {
     var hook = __meteor_bootstrap__.startupHooks.shift();
-    hook();
+    Profile.time(hook.stack || "(unknown)", hook);
   }
   // Setting this to null tells Meteor.startup to call hooks immediately.
   __meteor_bootstrap__.startupHooks = null;
+});
 
+var runMain = Profile("Run main()", function () {
   // find and run main()
   // XXX hack. we should know the package that contains main.
   var mains = [];
@@ -330,4 +337,12 @@ Fiber(function () {
   if (process.env.METEOR_PARENT_PID) {
     startCheckForLiveParent(process.env.METEOR_PARENT_PID);
   }
+});
+
+Fiber(function () {
+  Profile.run("Server startup", function () {
+    loadServerBundles();
+    callStartupHooks();
+    runMain();
+  });
 }).run();
diff --git a/tools/tests/apps/modules/package.json b/tools/tests/apps/modules/package.json
index 88fe339525..a12454d9ab 100644
--- a/tools/tests/apps/modules/package.json
+++ b/tools/tests/apps/modules/package.json
@@ -6,6 +6,7 @@
   "dependencies": {
     "aws-sdk": "^2.2.41",
     "github": "^0.2.4",
+    "idle-gc": "^1.0.1",
     "meteor-node-stubs": "^0.2.0",
     "moment": "2.11.1",
     "mssql": "^3.1.1",
diff --git a/tools/tests/apps/modules/server/only.js b/tools/tests/apps/modules/server/only.js
index cba3ee2a8b..f56c293a19 100644
--- a/tools/tests/apps/modules/server/only.js
+++ b/tools/tests/apps/modules/server/only.js
@@ -6,6 +6,11 @@ import "stripe";
 import "winston";
 import "mssql";
 
+// This package has a native .node module as the "main" property of its
+// package.json file. (#7947)
+import { start } from "idle-gc";
+assert.strictEqual(typeof start, "function");
+
 assert.strictEqual(Meteor.isServer, true);
 assert.strictEqual(Meteor.isClient, false);
 
diff --git a/tools/tool-env/profile.js b/tools/tool-env/profile.js
index 6c24782adf..15b5939d0d 100644
--- a/tools/tool-env/profile.js
+++ b/tools/tool-env/profile.js
@@ -255,14 +255,14 @@ var Profile = function (bucketName, f) {
     return f;
   }
 
-  return function (...args) {
+  return Object.assign(function profileWrapper() {
     if (! running) {
-      return f.apply(this, args);
+      return f.apply(this, arguments);
     }
 
     var name;
     if (_.isFunction(bucketName)) {
-      name = bucketName.apply(this, args);
+      name = bucketName.apply(this, arguments);
     } else {
       name = bucketName;
     }
@@ -280,7 +280,7 @@ var Profile = function (bucketName, f) {
     var start = process.hrtime();
     var err = null;
     try {
-      return f.apply(this, args);
+      return f.apply(this, arguments);
     }
     catch (e) {
       err = e;
@@ -298,7 +298,7 @@ var Profile = function (bucketName, f) {
     if (err) {
       throw err;
     }
-  };
+  }, f);
 };
 
 var time = function (bucket, f) {
@@ -386,7 +386,8 @@ var injectOtherTime = function (entry) {
   entries.push(other);
 };
 
-var reportOn = function (entry, isLastLeafStack = []) {
+var reportOn = function (entry, isLastLeafStack) {
+  isLastLeafStack = isLastLeafStack || [];
   var stats = entryStats(entry);
   var isParent = hasSignificantChildren(entry);
   var name = entryName(entry);