From worker 6:       * spawn                       [stdio passthrough ok]
    From worker 6:  Error During Test
    From worker 6:    Test threw an exception of type InterruptException
    From worker 6:    Expression: success(truecmd)
    From worker 6:    InterruptException:
    From worker 6:     in push! at ./array.jl:444 [inlined]
    From worker 6:     in wait(::Condition) at ./event.jl:14
    From worker 6:     in stream_wait(::Base.Process, ::Condition, ::Vararg{Condition,N}) at ./stream.jl:44
    From worker 6:     in wait at ./process.jl:712 [inlined]
    From worker 6:     in success(::Base.Process) at ./process.jl:602
    From worker 6:     in success(::Cmd) at ./process.jl:608
    From worker 6:     in include_string(::String, ::String) at ./loading.jl:380
    From worker 6:     in include_from_node1(::String) at ./loading.jl:429
    From worker 6:     in macro expansion at ./util.jl:180 [inlined]
    From worker 6:     in runtests(::String) at /private/tmp/julia/share/julia/test/testdefs.jl:7
    From worker 6:     in (::Base.Serializer.__deserialized_types__.##277)(::String) at /private/tmp/julia/share/julia/test/runtests.jl:44
    From worker 6:     in (::Base.##499#501{Base.CallMsg{:call_fetch}})() at ./multi.jl:1193
    From worker 6:     in run_work_thunk(::Base.##499#501{Base.CallMsg{:call_fetch}}, ::Bool) at ./multi.jl:844
    From worker 6:     in macro expansion at ./multi.jl:1193 [inlined]
    From worker 6:     in (::Base.##498#500{Base.CallMsg{:call_fetch},Base.MsgHeader,TCPSocket})() at ./event.jl:46