Unable to use "pretty" tests

[denzp]

Tests with Mode::Pretty aren't currently working because:

error: pretty-printing failed in round 0 revision None
status: exit code: 101
command: "rustc" "-" "-Zunstable-options" "--unpretty" "expanded" "--target" "x86_64-unknown-linux-gnu" "-L" "/tmp/target-attr.stage-id.pretty.aux" "-L" "crate=../target/debug/" "-L" "dependency=../target/debug/deps/"

stdout:
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stderr:
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error: Unrecognized option: 'unpretty'
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It caused by changes in Rust #47440.
Instead of -Zunstable-options --unpretty TYPE we need to use -Z unpretty=TYPE.

Should it be enough just to propagate the changes here?

[laumann]

Hi! Thanks for reporting this. Yeah, usually just propagating the changes should work.

In this case, it might make sense to also extend the test-project with a pretty mode test, so ensure it keeps working.