Exit status 137

[pcorpet]

We've setup our CI to run this plugin on each change of code.

Regularly we get the following transient error exit status 137: it's breaking although the plugin said it was successful.

bringing up nodes...
Cool, every declared fixture is being used.
/bin/bash: line 1:   557 Killed                  poetry run pytest tests --dead-fixtures

Exited with code exit status 137

Did anyone run into this issue? or know where I could look for this error?