spack-stack environment build errors not caught in GitHub actions #1444
Description
For ede071b, GitHub actions reports that the tests succeeded, but in fact the build of cylc-dev failed: https://github.com/JCSDA/spack-stack/actions/runs/12662753274/job/35288186039?pr=1410
Originally posted by @climbfuji in #1410 (comment)