Troubleshooting

Baseline tests fail

• Try with --in-place (see #321 as an example)

  • If that succeeds maybe copying the directory fails
  • Try --gitignore false
  • Try with --leak-dirs and see what is different between the source and scratch directory
  • If you can work out why it's failing please file a bug
  • .git (and similar VCS directories) are never copied: if your tree relies on this you'll need --in-place: https://github.com/sourcefrog/cargo-mutants/issues/348
  • File path dependencies pointing out of the source tree are not copied so again, any tree like this will need --in-place (https://github.com/sourcefrog/cargo-mutants/issues/366)

• Try with no concurrency

• If the crates are in a workspace, try copying them out and testing just one

Zero mutants found

• Are you running it in a crate (or with --package selections) pointing to a crate containing non-test code? cargo-mutants only mutates non-test code. (See https://github.com/sourcefrog/cargo-mutants/discussions/385).