The test failed on branch=release-22.1, cloud=gce:
test artifacts and logs in: /artifacts/backup/mixed-version/run_1
	assertions.go:262,assertions.go:1332,require.go:1231,backup.go:200,versionupgrade.go:208,backup.go:219,test_runner.go:866: 
			Error Trace:	backup.go:200
			            				versionupgrade.go:208
			            				backup.go:219
			            				test_runner.go:866
			            				asm_amd64.s:1581
			Error:      	Received unexpected error:
			            	pq: failed to run backup: exporting 3 ranges: failed to create blob client: connecting to node 1: unable to dial n1: breaker open
			Test:       	backup/mixed-version

	test_impl.go:259,require.go:1234,backup.go:200,versionupgrade.go:208,backup.go:219,test_runner.go:866: