(incorrect) status code returned for timed out builds

[AndrewRayCode]

Summary

If a test run (deploy --checkonly) takes longer than the timeout to complete, sfdx reports a successful status code.

Steps To Reproduce:

1. Deploy
2. Have the deploy take longer than the timeout

Expected result

sfdx returns an error status code

Actual result

sfdx returns a successful status code

Additional information

sfdx as a tooling utility is useful to run tests in an automated system. It's the behavior of all cli test tools to only return a successful code if all tests pass. sfdx is the only tool I'm aware of that does not follow this convention and discards the the test result when returning a status.

[MuriloKakazu]

In case anyone is also having this problem, there are some ways around it, one shown here: #461 (comment)

[uip-robot-zz]

This issue has been linked to a new work item: W-9125774

[mshanemc]

closely related to #461

[mshanemc]

this got fixed in the new source-plugin. It returns exitCode 69 for incomplete/timeout statuses for source commands