ops4j/org.ops4j.pax.url — comment on commit ff3c82a269251c8b4dc947af217d3675b4ef391b
File:  line 0
By hwellmann:

Central is supposed to be self-contained, so artifacts on central shall not refer to any external repositories, except when masked by profiles. In particular, there should be no references to snapshot repositories. Don't know if the Maven Release plugin or OSS Nexus has some sanity check for that.

If you don't want to build the snapshot dependencies of Pax URL locally, then why not simply add a profile with the OPS4J snapshots repository to your settings.xml. That's easy to turn on and off, and there's no risk of forgetting to remove temporary stuff from the project POMs before the next release.