Use Test::Harness::Straps's analyze_fh() method and something like CPAN:://IPC::Open3 to open a filehandle to your process.

A recent release of Test::Harness will capture the diagnostic output from Test::Builder-based tests appropriately.

In reply to Re: Capturing stderr from a test script executed by Test::Harness::Straps by chromatic
in thread Capturing stderr from a test script executed by Test::Harness::Straps by DrWhy

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