Tests are running, but cargo-mutants detects 0 mutants to test

[kevin-valerio]

Hi!

I'm struggling a bit to make cargo-mutants working. Somehow I cannot make it working in the same way as I run my tests.
Am I missing something ? I tried various possibilities, especially passing options to Cargo or playing with workspaces, but nothing worked.

Output after running cargo +stable mutants:

~/a/b/c/d/myproject > cargo +stable mutants 

Found 0 mutants to test
WARN No mutants found under the active filters

Output after running cargo +stable test

~/a/b/c/d/myproject > cargo +stable test 

running 19 tests
test tests::xx::abc ... ok
test tests::xx::abcd ... ok
...

Thank you very much, for your help, and for the awesome tooling! :)