[CI] Intermittent SEGV in cmdlineargs tests with threads #46537
Description
E.g. https://buildkite.com/julialang/julia-master/builds/15140#0182e880-cff6-49c2-a275-2164b2b9c41e, but I've seen it in other builds also:
cmdlineargs (6) \| failed at 2022-08-29T08:13:27.795
| Error During Test at /cache/build/default-amdci5-5/julialang/julia-master/julia-5e8e0a5190/share/julia/test/cmdlineargs.jl:258
| Test threw exception
| Expression: read(`$exename -p2 -t2 -e $code`, String) == "6"
| failed process: Process(`/cache/build/default-amdci5-5/julialang/julia-master/julia-5e8e0a5190/bin/julia -Cnative -J/cache/build/default-amdci5-5/julialang/julia-master/julia-5e8e0a5190/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.nthreads, x) for x in procs()))'`, ProcessSignaled(11)) [0]
|
| Stacktrace:
| [1] pipeline_error
| @ ./process.jl:565 [inlined]
| [2] read(cmd::Cmd)
| @ Base ./process.jl:449
| [3] read(cmd::Cmd, #unused#::Type{String})
| @ Base ./process.jl:458
| [4] macro expansion
| @ /cache/build/default-amdci5-5/julialang/julia-master/julia-5e8e0a5190/share/julia/stdlib/v1.9/Test/src/Test.jl:477 [inlined]
| [5] (::Main.Test81Main_cmdlineargs.var"#11#25"{Cmd})()
| @ Main.Test81Main_cmdlineargs /cache/build/default-amdci5-5/julialang/julia-master/julia-5e8e0a5190/share/julia/test/cmdlineargs.jl:258