dumpState

Render a per-node diagnostic snapshot — roles, terms, commit indices, the durable per-term leader pin, log ranges, and an election-event histogram (Timeout / BecomeLeader / BecomeFollower) that makes leadership thrash and term inflation visible at a glance. Used as the body of the AssertionError thrown by the bounded await helpers on non-convergence, and callable directly from a failing test assertion.

pin= is RaftStorage.leaderForTerm, and it is here because it is the one piece of refusing state nothing else shows (#2674): a node denied by RefusalGate.ForgedLeaderForTerm renders as leader=null after a restart — the restore brings back the pin but not _leader — so a dump without it says only "this node is stuck" and hides the value that is doing the sticking.