Access denied for jbosstools-experiments nexus repository

Builds of our jbosstools-integration-tests [1] repo started failing, because one plugin [2] depends on some artifacts from https://repository.jboss.org/nexus/content/repositories/jbosstools-experiments/ and it started requesting login (but our logins do not work there).

I think this repo shouldn't require any login. Can you check the configuration please? Thanks!

[1] https://github.com/jbosstools/jbosstools-integration-tests/
[2] https://github.com/jbosstools/jbosstools-integration-tests/blob/master/plugins/org.jboss.tools.perf.test.core/pom.xml