uclibc fix kernel constant tests + docker ci build fixes - #5261

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skrap wants to merge 9 commits into

rust-lang:mainfrom

skrap:bugfix/uclibc-docker-ci-build-fixes

Commits on Jul 6, 2026

use `cargo rustc` for macro expansion so -Zbuild-std can be supported
Jonah Petri
committed
incorporate review feedback
Jonah Petri
committed
address feedback round 2
Jonah Petri
committed
review feedback round 3
Jonah Petri
committed

Commits on Jul 7, 2026

uclibc: switch to toolchain built in CI
Jonah Petri
committed
uclibc: time64 support in shmid_ds
Jonah Petri
committed
uclibc: un-suppress tests for kernel constants from 5.16+
Jonah Petri
committed

Commits on Jul 13, 2026

review feedback round 4
Jonah Petri
committed
move to prebuild toolchain as github isn't fast enough
Jonah Petri
committed