feat: instrumentation profile

.cargo/config.toml

@@ -1,6 +1,10 @@
 [alias]
 docs = "doc --workspace --all-features --no-deps"
 
+[unstable]
+# `instrumentation` profile requires unstable `profile-rustflags` feature
+profile-rustflags = true
+
 [target.x86_64-pc-windows-msvc]
 rustflags = [
     # Increases the stack size to 10MB, which is

Cargo.toml

@@ -274,6 +274,11 @@ inherits = "release"
 debug = 2
 strip = false
 
+# `instrumentation` profile enables unstable tokio features
+[profile.instrumentation]
+inherits = "profiling"
+rustflags = ["--cfg", "tokio_unstable"]
+
 # Make sure debug symbols are in the bench profile
 [profile.bench]
 inherits = "profiling"