Re-running publish for a package that is already live (a dispatch for
something that turned out fine, or a retry after a partial failure) made
bin/build report nothing to build and exit 2, which the publish step
treated as an error. The collect step now dry-runs first: if the channel
already holds master's version the package is recorded as
already-published and skipped, and a run where every package is in that
state exits cleanly with a record saying so.
Ryan Hughes
a24c56cd52