Merge pull request #21208 from ChayimFriedman2/lint-attrs-hir

internal: Handle lint attributes via hir-expand attr handling

Merge pull request #21179 from Veykril/push-xnrqmltklpxs

internal: Ensure proc-macro-api version check works with postcard across protocol versions

Merge pull request #21098 from Aditya-PS-05/fix/include-bin-targets-o…

…utside-pkg-root

fix: include all target types with paths outside package root

Merge pull request #21021 from A4-Tacks/lib-smol_str-doc-feature

Fix removed feature `doc_auto_cfg` for smol_str lib

Merge pull request #21005 from fgamador/book-testing

Book>Contributing>Testing: Fix typos and distracting word choices

Merge pull request #20920 from ShoyuVanilla/target-dirs

fix: Resolve `target-dir` more precisely

Merge pull request #20922 from Veykril/veykril/push-pznvunxxozkq

perf: Reduce `client_commands` allocations in proto conversion

Merge pull request #20914 from ShoyuVanilla/next-solver-tests

Add regression tests for some fixed `A-ty` issues

fix: Only compute unstable paths on nightly toolchains for IDE features

Merge pull request #20434 from ShoyuVanilla/diag-fix-again

fix: Panic while trying to clear old diagnostics while there's nothing