Test failure in CI build 6377

[tbg]

The following test appears to have failed:

#6377:

I0824 18:36:48.474038 946 raft/raft.go:485  group 2 100000001 is starting a new election at term 6
I0824 18:36:48.474146 946 raft/raft.go:419  group 2 100000001 became candidate at term 7
I0824 18:36:48.474226 946 raft/raft.go:468  group 2 100000001 received vote from 100000001 at term 7
I0824 18:36:48.474349 946 raft/raft.go:447  group 2 100000001 became leader at term 7
E0824 18:36:48.475398 946 raft/log.go:99  group 2 after(70) is out of range [committed(71)]
panic: group 2 after(70) is out of range [committed(71)]

goroutine 5664 [running]:
github.com/cockroachdb/cockroach/multiraft.(*raftLogger).Panicf(0xc8200c4360, 0x13d7080, 0x29, 0xc8202816e0, 0x2, 0x2)
    /go/src/github.com/cockroachdb/cockroach/multiraft/raft.go:121 +0x1ce
github.com/coreos/etcd/raft.(*raftLog).append(0xc82000a7e0, 0xc8203f0960, 0x1, 0x1, 0x48)
    /go/src/github.com/coreos/etcd/raft/log.go:99 +0x26d
github.com/coreos/etcd/raft.(*raft).appendEntry(0xc82005dba0, 0xc8203f0960, 0x1, 0x1)
    /go/src/github.com/coreos/etcd/raft/raft.go:373 +0x1a9
github.com/coreos/etcd/raft.stepLeader(0xc82005dba0, 0x2, 0x0, 0x100000001, 0x0, 0x0, 0x0, 0xc8203f0960, 0x1, 0x1, ...)
    /go/src/github.com/coreos/etcd/raft/raft.go:533 +0x4bc
--
    /go/src/github.com/cockroachdb/cockroach/storage/store.go:585 +0x447
github.com/cockroachdb/cockroach/util/stop.(*Stopper).RunWorker.func1(0xc820016480, 0xc820166760)
    /go/src/github.com/cockroachdb/cockroach/util/stop/stopper.go:80 +0x60
created by github.com/cockroachdb/cockroach/util/stop.(*Stopper).RunWorker
    /go/src/github.com/cockroachdb/cockroach/util/stop/stopper.go:81 +0x70
FAIL    github.com/cockroachdb/cockroach/storage    13.450s
=== RUN   TestBatchBasics
I0824 18:36:31.491748 931 storage/engine/rocksdb.go:122  closing in-memory rocksdb instance
--- PASS: TestBatchBasics (0.00s)
=== RUN   TestBatchGet
I0824 18:36:31.495745 931 storage/engine/rocksdb.go:122  closing in-memory rocksdb instance
--- PASS: TestBatchGet (0.01s)
=== RUN   TestBatchMerge
I0824 18:36:31.501438 931 storage/engine/rocksdb.go:122  closing in-memory rocksdb instance
--- PASS: TestBatchMerge (0.00s)
=== RUN   TestBatchProto

Please assign, take a look and update the issue accordingly.

[mberhault]

Dup of #1878