The GitHub Actions job "Groovy Snapshot Canary Build" on 
grails-core.git/fix/rx-observable-scalar-projection has failed.
Run started by GitHub user jdaugherty (triggered by jdaugherty).

Head commit for run:
0cc718c9dd81592f73e42d392dbbdc2d8e1e6690 / James Daugherty 
<[email protected]>
Drop the unreachable array check from the Single projection guard

RxAstUtils.isSingle compares the node name and walks the superclass chain,
and an array ClassNode is named with a trailing [] and extends Object, so an
array return type already fails isSingle. The || isArray() branch could never
be reached and was the one partial line Codecov reported for the change.

Report URL: https://github.com/apache/grails-core/actions/runs/39605932058

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