[CI] Intermittent cmdlineargs test failure on various platforms

[giordano]

Example 1 on aarch64-linux-gnu, example 2 on FreeBSD

Error in testset cmdlineargs:
Error During Test at /cache/build/default-armageddon-4/julialang/julia-master/julia-3b39066447/share/julia/test/cmdlineargs.jl:322
  Test threw exception
  Expression: read(`$exename -e $code`, String) == string(cpu_threads)
  failed process: Process(`/cache/build/default-armageddon-4/julialang/julia-master/julia-3b39066447/bin/julia -Cnative -J/cache/build/default-armageddon-4/julialang/julia-master/julia-3b39066447/lib/julia/sys.so --depwarn=error --check-bounds=yes -g1 --startup-file=no --startup-file=no --color=no -e 'print(Threads.threadpoolsize())'`, ProcessSignaled(11)) [0]

[LilithHafner]

An example on test x86_64-apple-darwin, 9b27a8f8a5

The global RNG seed was 0x8b72cda8f107fc73fdba59c6ecf8ec65.
Error in testset cmdlineargs:
Test Failed at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-grannysmith-C07ZM05NJYVY.0/build/default-grannysmith-C07ZM05NJYVY-0/julialang/julia-master/julia-9b27a8f8a5/share/julia/test/cmdlineargs.jl:333
  Expression: read(`$exename -p2 -t2 -e $code`, String) == "6"
   Evaluated: "6      From worker 2:\t\n      From worker 2:\t[50490] signal (11.1): Segmentation fault: 11\n      From worker 2:\tin expression starting at none:0\n" == "6"

https://buildkite.com/julialang/julia-master/builds/24422#01887281-b1dd-4633-9734-8b9732b13826/580-1375

An example on test x86_64-linux-gnu, d912d85c42

The global RNG seed was 0x896331a54d680fdd49c46fb44c48f7c3.
Error in testset cmdlineargs:
Test Failed at /cache/build/default-amdci5-4/julialang/julia-master/julia-d912d85c42/share/julia/test/cmdlineargs.jl:333
  Expression: read(`$exename -p2 -t2 -e $code`, String) == "6"
   Evaluated: "6      From worker 2:\t\n      From worker 2:\t[3523] signal (11.1): Segmentation fault\n      From worker 2:\tin expression starting at none:0\n" == "6"

https://buildkite.com/julialang/julia-master/builds/24393#01886e46-8d99-4353-8ddf-a6a6bda3d402/751-1543

An example on test x86_64-linux-gnuassertrr, 318f0ead95

The global RNG seed was 0x70fcfe2533afec72c766eecdbaf02e5e.
Error in testset cmdlineargs:
Error During Test at /cache/build/default-amdci4-0/julialang/julia-master/julia-318f0ead95/share/julia/test/cmdlineargs.jl:333
  Test threw exception
  Expression: read(`$exename -p2 -t2 -e $code`, String) == "6"
  failed process: Process(`/cache/build/default-amdci4-0/julialang/julia-master/julia-318f0ead95/bin/julia -Cnative -J/cache/build/default-amdci4-0/julialang/julia-master/julia-318f0ead95/lib/julia/sys.so --depwarn=error --check-bounds=yes -g1 --startup-file=no --startup-file=no --color=no -p2 -t2 -e 'print(sum(remotecall_fetch(Threads.threadpoolsize, x) for x in procs()))'`, ProcessExited(1)) [1]
  Stacktrace:
   [1] pipeline_error(proc::Base.Process)
     @ Base ./process.jl:565 [inlined]
   [2] read(cmd::Cmd)
     @ Base ./process.jl:449
   [3] read
     @ Base ./process.jl:458 [inlined]
   [4] macro expansion
     @ Main.Test100Main_cmdlineargs /cache/build/default-amdci4-0/julialang/julia-master/julia-318f0ead95/share/julia/stdlib/v1.10/Test/src/Test.jl:669 [inlined]
   [5] (::Main.Test100Main_cmdlineargs.var"#12#28"{Cmd})()
     @ Main.Test100Main_cmdlineargs /cache/build/default-amdci4-0/julialang/julia-master/julia-318f0ead95/share/julia/test/cmdlineargs.jl:333
Error in testset cmdlineargs:
Test Failed at /cache/build/default-amdci4-0/julialang/julia-master/julia-318f0ead95/share/julia/test/cmdlineargs.jl:340
  Expression: readchomp(`$exename -q -p 2 -e "println(nworkers())"`) == "2"
   Evaluated: "      From worker 2:\tMaster process (id 1) could not connect within 60.0 seconds.\n      From worker 2:\texiting.\n2\n      From worker 3:\tfatal: error thrown and no exception handler available.\n      From worker 3:\tInterruptException()\n      From worker 3:\t_jl_mutex_unlock at /cache/build/default-amdci4-4/julialang/julia-master/src/threading.c:892\n      From worker 3:\tjl_mutex_unlock at /cache/build/default-amdci4-4/julialang/julia-master/src/julia_locks.h:80 [inlined]\n      From worker 3:\tijl_task_get_next at /cache/build/default-amdci4-4/julialang/julia-master/src/partr.c:440\n      From worker 3:\tpoptask at ./task.jl:975\n      From worker 3:\twait at ./task.jl:984\n      From worker 3:\ttask_done_hook at ./task.jl:673\n      From worker 3:\tjfptr_task_done_hook_76835.1 at /cache/build/default-amdci4-0/julialang/julia-master/julia-318f0ead95/lib/julia/sys.so (unknown line)\n      From worker 3:\t_jl_invoke at /cache/build/default-amdci4-4/julialang/julia-master/src/gf.c:2870 [inlined]\n      From worker 3:\tijl_apply_generic at /cache/build/default-amdci4-4/julialang/julia-master/src/gf.c:3071\n      From worker 3:\tjl_apply at /cache/build/default-amdci4-4/julialang/julia-master/src/julia.h:1963 [inlined]\n      From worker 3:\tjl_finish_task at /cache/build/default-amdci4-4/julialang/julia-master/src/task.c:320\n      From worker 3:\tstart_task at /cache/build/default-amdci4-4/julialang/julia-master/src/task.c:1249" == "2"

https://buildkite.com/julialang/julia-master/builds/24392#01886e42-04a0-4b65-aab2-9fcd6587a18e/746-1665

Another example on test x86_64-apple-darwin, 20752db7c1

The global RNG seed was 0xa705c1badfdc92ef5910588385a3f342.
Error in testset cmdlineargs:
Error During Test at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-grannysmith-C07ZQ07FJYVY.0/build/default-grannysmith-C07ZQ07FJYVY-0/julialang/julia-master/julia-20752db7c1/share/julia/test/cmdlineargs.jl:305
  Test threw exception
  Expression: string(cpu_threads) == read(`$exename --threads auto -e $code`, String) == read(`$exename --threads=auto -e $code`, String) == read(`$exename -tauto -e $code`, String) == read(`$exename -t auto -e $code`, String)
  failed process: Process(`/Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-grannysmith-C07ZQ07FJYVY.0/build/default-grannysmith-C07ZQ07FJYVY-0/julialang/julia-master/julia-20752db7c1/bin/julia -Cnative -J/Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-grannysmith-C07ZQ07FJYVY.0/build/default-grannysmith-C07ZQ07FJYVY-0/julialang/julia-master/julia-20752db7c1/lib/julia/sys.dylib --depwarn=error --check-bounds=yes -g1 --startup-file=no --startup-file=no --color=no --threads auto -e 'print(Threads.threadpoolsize())'`, ProcessSignaled(11)) [0]
  Stacktrace:
   [1] pipeline_error(proc::Base.Process)
     @ Base ./process.jl:565 [inlined]
   [2] read(cmd::Cmd)
     @ Base ./process.jl:449
   [3] read(cmd::Cmd, ::Type{String})
     @ Base ./process.jl:458
   [4] macro expansion
     @ /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-grannysmith-C07ZQ07FJYVY.0/build/default-grannysmith-C07ZQ07FJYVY-0/julialang/julia-master/julia-20752db7c1/share/julia/stdlib/v1.10/Test/src/Test.jl:669 [inlined]
   [5] top-level scope
     @ /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-grannysmith-C07ZQ07FJYVY.0/build/default-grannysmith-C07ZQ07FJYVY-0/julialang/julia-master/julia-20752db7c1/share/julia/test/cmdlineargs.jl:305
ERROR: LoadError: Test run finished with errors
in expression starting at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-grannysmith-C07ZQ07FJYVY.0/build/default-grannysmith-C07ZQ07FJYVY-0/julialang/julia-master/julia-20752db7c1/share/julia/test/runtests.jl:94

https://buildkite.com/julialang/julia-master/builds/24377#01886d79-8828-461d-9e03-8e000bf13af0/588-1402