[Flaky test][tcpcheckreceiver] TestScraper_ErrorEnumCounts failed on Windows

[songy23]

Component(s)

receiver/tcpcheck

What happened?

Example failure: https://github.com/open-telemetry/opentelemetry-collector-contrib/actions/runs/24727605419/job/72335756813

=== Failed
=== FAIL: . TestScraper_ErrorEnumCounts (1.00s)
Error closing listener: close tcp 127.0.0.1:8081: use of closed network connection

=== Debug Metrics ===
ResourceMetrics[0]:
  ScopeMetrics[0]:
    Metric: tcpcheck.error
      DataPoints: 2
        DataPoint[0]:
          Value: 3
          Attribute: tcpcheck.endpoint = invalid:host
          Attribute: error.code = invalid_endpoint
        DataPoint[1]:
          Value: 6
          Attribute: tcpcheck.endpoint = 1.2.3.4:80
          Attribute: error.code = connection_timeout
    Metric: tcpcheck.status

=== Error Counts ===
Error code 'invalid_endpoint': 3
Error code 'connection_timeout': 6
    scraper_test.go:380: 
        	Error Trace:	C:/a/opentelemetry-collector-contrib/opentelemetry-collector-contrib/receiver/tcpcheckreceiver/scraper_test.go:380
        	Error:      	Not equal: 
        	            	expected: 2
        	            	actual  : 3
        	Test:       	TestScraper_ErrorEnumCounts
        	Messages:   	Expected 2 invalid_endpoint errors

This has been failing consistently on Windows

Collector version

mainline

Environment information

No response

OpenTelemetry Collector configuration

Log output

Additional context

No response

Tip

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[github-actions]

Pinging code owners:

• receiver/tcpcheck: @atoulme @michael-burt @chengchuanpeng @yanfeng1992

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[github-actions]

Pinging code owners for receiver/tcpcheck: @atoulme @michael-burt @chengchuanpeng @yanfeng1992. See Adding Labels via Comments if you do not have permissions to add labels yourself. For example, comment '/label priority:p2 -needs-triage' to set the priority and remove the needs-triage label.