'All tests passed' message is incorrect

[Krushr]

There are cases on Semaphore where branches have failed but mightn't have failing tests on them, or other tests which aren't run through rspec failed, or someone stopped the build.

Perhaps a better message would be 'Unable to find any failing RSpec tests'?

[hackling]

I have also noticed that if a branch times out on semaphore, that is also returns the 'All tests passed' message as it doesn't find the summary output.

Some work needs to be done to the regex, so that it detects that the 'end of test suite' output is actually present, and that other types of tests are actually detected as well.

[hackling]

Also now that Semaphore emits more with regards to branch status (the addition of stopped), we should provide more descriptive feedback to the user, and potentially scan the log of the previous run that actually completed.