Race conditions: PR can be compared to outdated 'master' depending on Travis build run time

[erichdev]

Do you want to request a feature or report a bug?
Bug

What is the current behavior? If the current behavior is a bug, please provide the steps to reproduce.
Travis job run times can be unpredictable and lead to outdated bundlesize comparisons. For example, if a PR is merged, triggering a Travis build, and then a new PR is submitted, kicking off another Travis build, the second Travis build may complete before the first one, resulting in the PR size being compared to the old master values from before the merge commit.

See #155 (comment) for reference

What is the expected behavior?
bundlesize should compare the PR size to the latest version of master.

If this is a feature request, what is motivation or use case for changing the behavior?

Please mention other relevant information.

• node version
• npm version
• Operating system
• bundlesize version
• CI you are using

[siddharthkp]

Thanks for taking the time to report this!

I don't have a solution to this right now, but will circle back to it sometime