v2/internal/proxy: TestClientCloseWaitsForActiveConnections failed

[flaky-bot]

This test failed!

To configure my behavior, see the Flaky Bot documentation.

If I'm commenting on this issue too often, add the flakybot: quiet label and
I will stop commenting.

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commit: ee1024f
buildURL: https://github.com/GoogleCloudPlatform/cloudsql-proxy/actions/runs/2786572218
status: failed

Test output

2022/08/03 02:54:49 [proj:region:pg] client closed the connection
2022/08/03 02:54:49 [proj:region:pg] Listening on 127.0.0.1:5000
2022/08/03 02:54:49 [proj:region:pg] Listening on 127.0.0.1:5001
2022/08/03 02:54:49 [proj:region:pg] accepted connection from 127.0.0.1:49425
2022/08/03 02:54:49 [proj:region:pg] client closed the connection
    proxy_test.go:392: c.Close should error, got = nil

[flaky-bot]

Looks like this issue is flaky. 😟

I'm going to leave this open and stop commenting.

A human should fix and close this.

---

When run at the same commit (ee1024f), this test passed in one build (https://github.com/GoogleCloudPlatform/cloudsql-proxy/actions/runs/2786572218) and failed in another build (https://github.com/GoogleCloudPlatform/cloudsql-proxy/actions/runs/2786572218).