The test failed on branch=master, cloud=gce:
test artifacts and logs in: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/artifacts/follower-reads/survival=region/locality=regional/reads=bounded-staleness/run_1
	follower_reads.go:657,follower_reads.go:319,follower_reads.go:57,test_runner.go:777: too many intervals with more than 2 nodes with low follower read ratios: 5 intervals > 4 threshold. Bad intervals:
		interval 09:08:40-09:08:50: n1 ratio: 0.000 n2 ratio: 0.355 n3 ratio: 0.724 n4 ratio: 1.000 n5 ratio: 1.000 n6 ratio: 1.000 
		interval 09:09:30-09:09:40: n1 ratio: 1.000 n2 ratio: 0.694 n3 ratio: 0.120 n4 ratio: 1.000 n5 ratio: 1.000 n6 ratio: 0.650 
		interval 09:10:00-09:10:10: n1 ratio: 1.000 n2 ratio: 0.468 n3 ratio: 0.000 n4 ratio: 1.000 n5 ratio: 1.000 n6 ratio: 0.627 
		interval 09:10:20-09:10:30: n1 ratio: 1.000 n2 ratio: 0.853 n3 ratio: 0.161 n4 ratio: 1.000 n5 ratio: 1.000 n6 ratio: 0.686 
		interval 09:10:50-09:11:00: n1 ratio: 1.000 n2 ratio: 0.508 n3 ratio: 0.124 n4 ratio: 1.000 n5 ratio: 1.000 n6 ratio: 0.628