changelogCheck not failing on REJECTED_NONFASTFORWARD

[nedtwigg]

This build log is concerning.

> Task :changelogCheck
push refs/heads/master to origin git@github.com:diffplug/durian-rx.git
  REJECTED_NONFASTFORWARD aff9d66d97f7f18f1987c453b93988e9a090b5db...500c1520445c58ffa60a6ef5a0df5f2fe2253c08

> Task :changelogBump
> Task :changelogBumpFreshmark
> Task :changelogBumpFreshmarkGitAdd

> Task :changelogPush
push refs/tags/release/3.0.2 to origin git@github.com:diffplug/durian-rx.git
  OK 0000000000000000000000000000000000000000...462e717275e44db1b2db77b352ac228b152e34c4 fastForward
push refs/heads/master to origin git@github.com:diffplug/durian-rx.git
  REJECTED_NONFASTFORWARD aff9d66d97f7f18f1987c453b93988e9a090b5db...462e717275e44db1b2db77b352ac228b152e34c4

[nedtwigg]

What does -Prelease=true do if it hasn't been configured for snapshots?