roachtest: autoupgrade failed

[cockroach-teamcity]

(roachtest).autoupgrade failed on release-20.1@df6eeda947153b1e5d5b87f3fb1c18fe3ff58901:

The test failed on branch=release-20.1, cloud=gce:
test artifacts and logs in: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/artifacts/autoupgrade/run_1
	cluster.go:1931,autoupgrade.go:48,autoupgrade.go:265,test_runner.go:749: cluster.Put: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/bin/roachprod put teamcity-2586273-1610695213-19-n5cpu4:1-5 /home/agent/temp/buildTmp/cockroach-v19.2.11.linux-amd64 ./cockroach returned: exit status 1
		(1) attached stack trace
		  | main.(*cluster).PutE
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/cluster.go:1946
		  | main.(*cluster).Put
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/cluster.go:1930
		  | main.registerAutoUpgrade.func1
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/autoupgrade.go:48
		  | main.registerAutoUpgrade.func2
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/autoupgrade.go:265
		  | main.(*testRunner).runTest.func2
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/test_runner.go:749
		  | runtime.goexit
		  | 	/usr/local/go/src/runtime/asm_amd64.s:1374
		Wraps: (2) cluster.Put
		Wraps: (3) /home/agent/work/.go/src/github.com/cockroachdb/cockroach/bin/roachprod put teamcity-2586273-1610695213-19-n5cpu4:1-5 /home/agent/temp/buildTmp/cockroach-v19.2.11.linux-amd64 ./cockroach returned
		  | stderr:
		  |
		  | stdout:
		  | teamcity-2586273-1610695213-19-n5cpu4: putting (dist) /home/agent/temp/buildTmp/cockroach-v19.2.11.linux-amd64 ./cockroach
		  | ..........
		  |    1: done
		  |    2: done
		  |    3: done
		  |    4: done
		  |    5: ~ scp -r -C -o StrictHostKeyChecking=no -i /root/.ssh/id_rsa -i /root/.ssh/google_compute_engine ubuntu@35.224.126.124:./cockroach ubuntu@35.224.117.0:./cockroach
		  | Permission denied (publickey).
		  | lost connection
		  | : exit status 1
		  | I210115 07:32:17.684833 1 cluster_synced.go:1169  put /home/agent/temp/buildTmp/cockroach-v19.2.11.linux-amd64 failed
		Wraps: (4) exit status 1
		Error types: (1) *withstack.withStack (2) *errutil.withMessage (3) *main.withCommandDetails (4) *exec.ExitError

More

Artifacts: /autoupgrade

See this test on roachdash
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[nvanbenschoten]

Permission denied (publickey).

Test infra flake.