If you actually click that and check the build status, you can see that the most recent build of the master branch was successful. The only failing builds are

If you actually click that and check the build status, you can see that the most recent build of the master branch was successful. The only failing builds are for pull requests and other branches. The image URL in README.md should probably be changed to https://travis-ci.org/andlabs/libui.svg?branch=master https://travis-ci.org/andlabs/libui.svg?branch=master (from just https://travis-ci.org/andlabs/libui.svg https://travis-ci.org/andlabs/libui.svg).