BoundsError in gc/objarray.jl test

[inkydragon]

On master (94fd312):

• Detected Julia version: 1.11 (1.11.0-DEV)
• Detected build platform: x86_64-linux-gnu (x86_64, linux)

https://buildkite.com/julialang/julia-master/builds/33147#018d7e9f-6bc8-4754-adaa-bfce2142f2ac/790-1310

gc                                                (1) |        started at 2024-02-06T14:57:29.321
ERROR: LoadError: TaskFailedException
    nested task error: BoundsError: attempt to access 1500×1500 Matrix{Cell} at index [1]
    Stacktrace:
     [1] throw_boundserror(A::Matrix{Cell}, I::Tuple{Int64})
       @ Base ./essentials.jl:14
     [2] setindex!
       @ ./array.jl:971 [inlined]
     [3] fillcells!(mc::Matrix{Cell})
       @ Main /cache/build/tester-amdci5-11/julialang/julia-master/julia-94fd312df0/share/julia/test/gc/objarray.jl:18
     [4] work
       @ /cache/build/tester-amdci5-11/julialang/julia-master/julia-94fd312df0/share/julia/test/gc/objarray.jl:25 [inlined]
     [5] macro expansion
       @ /cache/build/tester-amdci5-11/julialang/julia-master/julia-94fd312df0/share/julia/test/gc/objarray.jl:30 [inlined]
     [6] (::var"#7#threadsfor_fun#2"{var"#7#threadsfor_fun#1#3"{UnitRange{Int64}}})(tid::Int64; onethread::Bool)
       @ Main ./threadingconstructs.jl:252
     [7] #7#threadsfor_fun
       @ ./threadingconstructs.jl:219 [inlined]
     [8] (::Base.Threads.var"#1#2"{var"#7#threadsfor_fun#2"{var"#7#threadsfor_fun#1#3"{UnitRange{Int64}}}, Int64})()
       @ Base.Threads ./threadingconstructs.jl:154
Stacktrace:
 [1] threading_run(fun::var"#7#threadsfor_fun#2"{var"#7#threadsfor_fun#1#3"{UnitRange{Int64}}}, static::Bool)
   @ Base.Threads ./threadingconstructs.jl:172
 [2] macro expansion
   @ ./threadingconstructs.jl:189 [inlined]
 [3] run(maxsize::Int64)
   @ Main /cache/build/tester-amdci5-11/julialang/julia-master/julia-94fd312df0/share/julia/test/gc/objarray.jl:29
 [4] top-level scope
   @ /cache/build/tester-amdci5-11/julialang/julia-master/julia-94fd312df0/share/julia/test/gc/objarray.jl:35
in expression starting at /cache/build/tester-amdci5-11/julialang/julia-master/julia-94fd312df0/share/julia/test/gc/objarray.jl:35
gc                                                (1) |         failed at 2024-02-06T14:58:21.857
Error During Test at /cache/build/tester-amdci5-11/julialang/julia-master/julia-94fd312df0/share/julia/test/gc.jl:12

[vtjnash]

Yeah, we have ~4 open issues already for this one, and a few rr traces

[d-netto]

Likely duplicate of #53026.