[issuegenerator] Failing to ingest JUnit files on windows.

[ArthurSens]

Component

issuegenerator

Bug Description

issuegenerator is failing to ingest JUnit files when running on Windows machines. As shown in https://github.com/open-telemetry/opentelemetry-collector-contrib/actions/runs/16519577038/job/46719334073, with the error:

2025-07-25T10:36:56.552Z	FATAL	issuegenerator@v0.23.1/main.go:160	Failed to ingest JUnit xml, omitting test results from report	{"error": "XML syntax error on line 863: element <fake-root> closed by </testcase>"}

Since we use issuegenerator to capture flaky tests, this problem makes us less confident that OTel-Collector-contrib continues to work like it should. The hard part here is that it doesn't fail all the time, and we are struggling to understand when it happens

Steps To Reproduce

n/a

Expected Behavior

No failures

[ArthurSens]

@pjanotti, is this something you could help us with?

[mx-psi]

Not sure if you pinged @pjanotti given the link so pinging him again just in case 😅