[ERROR] Plugin org.apache.maven.plugins:maven-enforcer-plugin:1.0 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-enforcer-plugin:jar:1.0: Could not transfer artifact org.apache.maven.plugins:maven-enforcer-plugin:pom:1.0 from/to central (https://repo.maven.apache.org/maven2): hostname in certificate didn't match: <repo.maven.apache.org> != <repo1.maven.org> OR <repo1.maven.org> -> [Help 1]
That error did not recur today when I ran mvn deploy.
Not sure if it will clear up next build in Travis. Forced Restart-Build succeeded. Hopefully the next build-on-push will likewise succeed.