"go get -u github.com/tdewolff/minify/cmd/minify" started failing on linux

See the failure on https://travis-ci.org/shlomif/fc-solve/builds/451392997 . This command is working fine on my local Mageia v7 x86-64 host. How can I fix it?

Between the last successful build and the first failing build, there is this commit which probably broke your build.

Thanks for the insight!