creating test list failed: --list --format terse aborted with signal 8 (SIGFPE)

[jayvdb]

I'm on macos, and running cargo nextest run with no config fails. More context at Electron100/butane#419

   Compiling ...
    Finished `test` profile [unoptimized + debuginfo] target(s) in 2m 20s
error: creating test list failed

Caused by:
  for `butane_codegen`, command `/Users/jayvdb/rust/butane/target/debug/deps/butane_codegen-47ef90ec8b3a3bfb --list --format terse` aborted with signal 8 (SIGFPE)
  --- stdout:

  --- stderr:

  ---

% cargo nextest --version
cargo-nextest 0.9.111 (342aa1788 2025-11-04)
release: 0.9.111
commit-hash: 342aa178837750acc63c1e341c0633bbac729e09
commit-date: 2025-11-04
host: x86_64-apple-darwin

It isnt happening in CI on ubuntu-latest https://github.com/Electron100/butane/actions/runs/19187863109/job/54858238719?pr=420

It does happen on macos-latest CI https://github.com/Electron100/butane/actions/runs/19187863109/job/54858666242?pr=420

Also occurring on windows-latest CI https://github.com/Electron100/butane/actions/runs/19188485619/job/54859638699?pr=420

[sunshowers]

Thanks for the report. At first glance this looks like a bug in your code -- SIGFPE and SIGSEGV (as in CI) are generally indicators of a buggy program. You may wish to attach a debugger or inspect a core file to figure out what's causing the crash.

If you can find a minimized example which clearly indicates nextest is to blame, I'd be happy to have a look.

[jayvdb]

I've written a write-up of the problem at Electron100/butane#419

It seems that there is something specific to cargo-nextest here.

[sunshowers]

Could you prepare a minimized example?