baby steps towards a Structured Concurrency API #58

Job	Run time
Cxx interop / Construct Cxx interop matrix	22s
Unit tests / Construct unit test matrix	3s
Soundness / API breakage check	4m 12s
Soundness / License headers check	4s
Soundness / Documentation check	2m 39s
Soundness / Unacceptable language check	15s
Soundness / Broken symlinks check	10s
Soundness / Format check	34s
Soundness / Python lint check	26s
Soundness / Shell check	34s
Soundness / YAML lint check	4s
Unit tests / Unit tests / Linux (5.9)	4m 30s
Unit tests / Unit tests / Linux (5.10)	4m 30s
Unit tests / Unit tests / Linux (6.0)	4m 55s
Unit tests / Unit tests / Linux (nightly-6.1)	3m 27s
Unit tests / Unit tests / Linux (nightly-main)	8m 4s
Cxx interop / Cxx interop / Linux (5.9)	2m 22s
Cxx interop / Cxx interop / Linux (5.10)	2m 18s
Cxx interop / Cxx interop / Linux (6.0)	2m 40s
Cxx interop / Cxx interop / Linux (nightly-6.1)	3m 13s
Cxx interop / Cxx interop / Linux (nightly-main)	3m 11s
	48m 33s

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