ProcessExitedException when using @showprogress @distributed with file operations

[mattwigway]

The documentation says that @distributed for without a reducer implies @sync but when I run a loop that contains a file operation as the last step in my program, I get the following error:

Unhandled Task ERROR: ProcessExitedException(4)

...and 5 more exceptions.

Stacktrace:
 [1] sync_end(c::Channel{Any})
   @ Base ./task.jl:381
 [2] (::Distributed.var"#177#179"{var"#3#8"{RemoteChannel{Channel{Bool}}}, UnitRange{Int64}})()
   @ Distributed ./task.jl:400

As far as I can tell, the tasks actually completed correctly. It seems to be related to workers getting shut down too quickly. If I add sleep(10) at the end of the program the error goes away. It also goes away if I replace @showprogress with @sync.

Julia 1.7.3 x86 build, running on an Apple M1, with ProgressMeter 1.7.2. MWE below.

using Distributed

addprocs(exeflags="--project=$(Base.active_project())")

@everywhere using ProgressMeter

function main()
    fname = ARGS[1]
    @showprogress @distributed for i in 1:10
        open(fname) do str
            open("/tmp/$i.txt", "w") do out
                write(out, read(str))
            end
        end
    end
end

main()

[MarcMush]

fixed by #295