One was backported to 0.5.1, the other was not. One of the cases where the metadata sanity check failed yesterday would happen on 0.5.1 but not 0.5.0, which seems to have been a situation where the resolver got worse from one of the recent changes.
One was backported to 0.5.1, the other was not. One of the cases where the metadata sanity check failed yesterday would happen on 0.5.1 but not 0.5.0, which seems to have been a situation where the resolver got worse from one of the recent changes.