Loading required package: shiny
Loading required package: methods

Listening on http://127.0.0.1:8765
Warning: Error in badfunc: boom
Stack trace (innermost first):
    106: badfunc [${PWD}/stacktrace2/app.R#4]
    105: reactive A [${PWD}/stacktrace2/app.R#8]
     94: A [${SHINY}/R/reactives.R#376]
     93: reactive B [${PWD}/stacktrace2/app.R#12]
     82: B [${SHINY}/R/reactives.R#376]
     81: reactive C [${PWD}/stacktrace2/app.R#16]
     70: C [${SHINY}/R/reactives.R#376]
     69: renderText [${PWD}/stacktrace2/app.R#28]
     68: func
     67: output$foo [${SHINY}/R/shinywrappers.R#280]
      1: shiny::runApp [${SHINY}/R/server.R#685]
Warning: Error in doTryCatch: 
Stack trace (innermost first):
    73: <Anonymous>
    72: stop
    71: C [${SHINY}/R/reactives.R#384]
    70: renderDataTable [${PWD}/stacktrace2/app.R#31]
    69: func
    68: output$bar [${SHINY}/R/shinywrappers.R#456]
     1: shiny::runApp [${SHINY}/R/server.R#685]
NULL