Test Failed, removing unused lines (Rust)

Challenges
10

Got it! It seems the code doesn’t work correctly when let mut stderr = BufWriter::new(out.stderr()?) is deleted.

  • Without let mut stderr ..., “maria.error” is not created:

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image1772×434 103 KB

  • With let mut stderr ... untouched, “maria.error” is successfully created:

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image1776×440 95.7 KB