`CompileBot` fails julia `1.8`

[t-bltg]

See e.g. failing job at https://github.com/JuliaPlots/Plots.jl/runs/6023176404?check_suite_focus=true.

Are there any ways to debug this ?

[aminya]

It seems like an upstream issue, or it might be because of a88f7e3

Have you tried this locally?

[t-bltg]

I've re-run CI against CompileBot@1.0.8, and it still fails.

The scripts hangs at [ Info: Processsing the generated precompile signatures. I think the memory usage grows endlessly and the process crashes with ProcessSignaled(9) (no more memory available), after ~2h (it should only take ~5min to generate the precompilation statements, as is done on julia 1.6 and 1.7).

The process ends up without errors: [ Info: precompile signatures were written to [...]/Plots.jl/deps/SnoopCompile/precompile/1.8 locally using 1.8.0-beta3, the process taking up to around 15Gb RAM.

It seems that the github actions nodes only have MemTotal: 7113128 kB ~ 7GB RAM memory, and 4GB swap. What, in the precompilation files generation process, is taking that much memory ?

[t-bltg]

Clearly going further with the latest run (I've added 10GB swap in CI), but 5h 51m (build cancelled automatically) is a massive regression ...

[aminya]

Try excluding some tests from the test script and see if you can find the faulty test.
https://aminya.github.io/CompileBot.jl/dev/#Create-the-script-that-runs-snoop_bot-1

[BeastyBlacksmith]

Might be related to julia being able to precompile more methods?

Ref: https://youtu.be/GnsONc9DYg0