Bogus jobs are started when a build is cancelled and there are pending jobs

When I cancel the build and the currently running jobs are cancelled, a few pending jobs that immediately follow them in the list start at the same time. They eventually cancel, too, but only after a few minutes.

Hey @native-api, thanks for reaching out!

Would you have a link to a build that exhibited this behavior? We would be happy to have a look.

Thanks!

@dominic In https://travis-ci.org/native-api/opencv-python/builds/527426891 , when the build was cancelled, jobs 9 and 10 were running. When they were cancelled, jobs 11 and 12 started briefly.