Crashes or hangs running doctests in CI (possibly related to GAP.jl and/or Singular.jl) #2336
Description
Recently I've observed here and also in the Singular.jl repository some crashes running doctest CI jobs; or in other cases these just hang "forever". For Oscar so far I've seen these only with Julia nightly; for Singular.jl also with other Julia versions. Unfortunately there is almost no information in the relevant CI logs. (The crashes in Singular.jl may or may not be related; I just thought I should point out the coincidence, in case there is a connection after all)
Examples:
- https://github.com/oscar-system/Oscar.jl/actions/runs/4855332082/jobs/8653774220 (core dump)
- https://github.com/oscar-system/Oscar.jl/actions/runs/4864122171/jobs/8672723092 (hangs forever)
- https://github.com/oscar-system/Oscar.jl/actions/runs/4844111264/jobs/8632169406 (core dump)
- https://github.com/oscar-system/Singular.jl/actions/runs/4866785133/jobs/8678665577 (segfault on macOS)
- https://github.com/oscar-system/Singular.jl/actions/runs/4817038889/jobs/8577275844
- https://github.com/oscar-system/Singular.jl/actions/runs/4817038889/jobs/8577275626
Actually there are also cases where the regular tests just "hang" without making any progress; not sure if this might be related or not:
To work on this, it would of course be good to be able to reproduce these; and/or to get the CI to produce more information, like a backtrace from the crash. If anyone has an idea how we might achieve that...