The combination of TravisCI (Linux/OS X) and AppVeyor (Windows) is not enough.

v1.3.0 was patched for linux/arm64, but we have no CI for arm64 to ensure that it keeps on working. We need a more comprehensive solution that covers arm64, ppc, and Solaris.

The best bet is to look into the Builders used by Go itself.
https://github.com/golang/go/wiki/DashboardBuilders

Perhaps one option would be to ask the Go Team if fsnotify could become a golang.org/x/fsnotify subrepository, but maybe that isn't necessary.

Of note, there still could be API changes that warrant a v2.0 of fsnotify.