MSC3266 in unstable features #3400

Job	Run time
check-lockfile	4s
lint-crlf	7s
lint-newsfile	35s
changes	2s
check-schema-delta	42s
Typechecking	1m 29s
check-sampleconfig	40s
lint	28s
lint-pydantic	4m 50s
lint-clippy	0s
lint-clippy-nightly	0s
lint-readme	0s
lint-rustfmt	0s
linting-done	2s
calculate-test-jobs	7s
complement (monolith, SQLite)	13m 15s
portdb (3.8, 11)	3m 6s
cargo-test	0s
complement (monolith, Postgres)	15m 24s
trial-olddeps	8m 38s
portdb (3.11, 15)	3m 4s
complement (workers, Postgres)	21m 19s
trial-pypy	0s
cargo-bench	0s
trial (3.8, sqlite, all)	6m 8s
trial (3.8, postgres, 11, all)	13m 43s
sytest (focal)	8m 36s
trial (3.8, sqlite)	5m 34s
sytest (focal, postgres)	10m 37s
sytest (focal, multi-postgres, workers)	14m 26s
sytest (focal, multi-postgres, workers, asyncio)	19m 3s
export-data	2m 13s
tests-done	2s
	2h 34m 14s

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