Profile,test: avoid profiling compiler time

[vtjnash]

ref #33312. not really a fix, but might help clarify it?

[c42f]

Weird error. Seems like a reasonable step to take in debugging.

[KristofferC]

Seems to still happen:

https://build.julialang.org/#/builders/13/builds/8106/steps/3/logs/stdio

Error in testset Profile:
Error During Test at /buildworker/worker/tester_linux32/build/share/julia/test/testdefs.jl:22
  Got exception outside of a @test
  LoadError: OutOfMemoryError()
  Stacktrace:
   [1] _growend! at ./array.jl:870 [inlined]
   [2] ensureroom at ./iobuffer.jl:325 [inlined]
   [3] unsafe_write(::Base.GenericIOBuffer{Array{UInt8,1}}, ::Ptr{UInt8}, ::UInt32) at ./iobuffer.jl:414
   [4] write at ./strings/io.jl:183 [inlined]
   [5] print at ./strings/io.jl:185 [inlined]
   [6] print(::Base.GenericIOBuffer{Array{UInt8,1}}, ::String, ::Char) at ./strings/io.jl:46
   [7] println at ./strings/io.jl:73 [inlined]
   [8] print_tree(::Base.GenericIOBuffer{Array{UInt8,1}}, ::Profile.StackFrameTree{Base.StackTraces.StackFrame}, ::Int32, ::Profile.ProfileFormat) at /buildworker/worker/package_linux32/build/usr/share/julia/stdlib/v1.5/Profile/src/Profile.jl:747
   [9] tree(::Base.GenericIOBuffer{Array{UInt8,1}}, ::Array{UInt64,1}, ::Dict{UInt64,Array{Base.StackTraces.StackFrame,1}}, ::Int32, ::Profile.ProfileFormat) at /buildworker/worker/package_linux32/build/usr/share/julia/stdlib/v1.5/Profile/src/Profile.jl:790
   [10] print(::Base.GenericIOBuffer{Array{UInt8,1}}, ::Array{UInt32,1}, ::Dict{UInt64,Array{Base.StackTraces.StackFrame,1}}, ::Profile.ProfileFormat, ::Symbol) at /buildworker/worker/package_linux32/build/usr/share/julia/stdlib/v1.5/Profile/src/Profile.jl:164
   [11] #print#4 at /buildworker/worker/package_linux32/build/usr/share/julia/stdlib/v1.5/Profile/src/Profile.jl:148 [inlined]
   [12] top-level scope at /buildworker/worker/tester_linux32/build/share/julia/stdlib/v1.5/Profile/test/runtests.jl:39
   [13] include(::Module, ::String) at ./Base.jl:377
 ...