CocoaPods not parsing simctl output, results in error

[rowungiles]

When I try a pod lib lint I'm receiving an error:
- ERROR | [iOS] unknown: Encountered an unknown error (784: unexpected token at '2020-11-17 12:11:19.652 simctl[48241:1246091] apply_selection_policy_once: prefer use of removable GPUs (via com.apple.CoreSimulator.simctl:GPUSelectionPolicy->preferRemovable)

I have an eGPU attached to my machine which causes additional logs to come back.
For example:

xcrun simctl listwill return:

xcrun simctl list
2020-11-17 12:19:37.295 simctl[53441:1264174] apply_selection_policy_once: prefer use of removable GPUs (via com.apple.CoreSimulator.simctl:GPUSelectionPolicy->preferRemovable)
== Device Types ==

I think that the cause might be lib/cocoapods/simctl.rb (and I suppose others where parsing occurs) failing to parse this output correctly.

I'm using CocoaPods 1.10.0 on macOS 11.0.1.

[dnkoutso]

What version of Xcode? Did you also gem update fourflusher?

[rowungiles]

I see no updates available when running running gem update fourflusher.

Looking at the Gemfile.lock, i see cocoapods (1.10.0) using fourflusher (2.3.1).

I'm using Xcode Version 12.2 (12B45b).

[dnkoutso]

This might be an issue with Xcode 12.2 probably, will need to handle the output of xcrun simctl list.

[dnkoutso]

@rowungiles could use some help here perhaps. This probably can move to fourflusher repo.

[owalerys]

I reported the same issue with Flutter: https://github.com/flutter/flutter/issues/72733

That specific line that you're seeing apply_selection_policy_once is coming back in stderr so some tools assume that to be a fatal error from running the command, though it appears to only be a warning in this case.

[rowungiles]

@dnkoutso did you want me to raise an issue in the fourflusher issues?

[Alex009]

same problem too...
cocoapods 1.10.0
macos 11.1
xcode 12.3

[dnkoutso]

Fixed with https://github.com/CocoaPods/fourflusher/pull/27

[rowungiles]

Thanks so much for committing a fix for this @dnkoutso 🥇