• Version: 12.18.3
• Platform: macOS 10.15
• Subsystem:

What steps will reproduce the bug?

Unknown 🤷‍♂️ , failed only once on CI.

How often does it reproduce? Is there a required condition?

Once A few times

What is the expected behavior?

Run without crashes

What do you see instead?

Assertion failed: (timeout != -1), function uv__io_poll, file ../deps/uv/src/unix/kqueue.c, line 231.
##[error]Exit code 134 returned from process: file name '/Users/runner/runners/2.172.2/externals/node/bin/node', arguments '"/Users/runner/work/_tasks/Xcode_1e78dc1b-9132-4b18-9c75-0e7ecc634b74/5.170.2/xcode.js"'.

Additional information

Sorry that there is so little info here, but it doesn't repro on the same VM with same parameters. It's more like notification that this problem exists so you can review/analyze this part of the code.
Just in case: the script is open source https://github.com/microsoft/azure-pipelines-tasks/blob/master/Tasks/XcodeV5/xcode.ts