Performance Shift(s): bbb53585

[github-actions]

Benchmark comparison has identified performance shifts at

• commit bbb5358 (Dark logo #5278).

Please review the report below and take corrective/congratulatory action as appropriate 🙂

Performance shift report

· Benchmark list file .asv/results/benchmarks.json missing!
  Use `asv run --bench just-discover` to regenerate benchmarks.json

Generated by GHA run 4814133164

[lbdreyer]

It looks like the benchmarks are failing when it tries to create an environment https://github.com/SciTools/iris/actions/runs/4814133164/jobs/8571480058#step:8:99

I see it mentions that the env.yml is not valid (https://github.com/SciTools/iris/actions/runs/4814133164/jobs/8571480058#step:8:72) which looks like a new error, as it doesn't appear in previous runs of the benchmarks

[trexfeathers]

• Our GitHub actions image was just updated with a new version of Miniconda: 23.3.1
• 23.3.1 includes Fix confusing error message for env create with missing file conda/conda#11883, which appears to make Conda more fussy about YAML environment files
• ASV will write a Conda YAML file with an empty channels: section if none are provided in asv.conf.json/conda_channels.
  This appears to be newly unacceptable to Conda.
• The fix is therefore: b558d0a
  Coming soon to a PR near you 🥵

[trexfeathers]

• The fix is therefore: b558d0a
  Coming soon to a PR near you 🥵

#5286

[trexfeathers]

Closed by #5286