Merge pull request #19702 from lnicola/sync-from-rust

internal: Sync from downstream

Author: lnicola

.github/workflows/sysroots.yml

@@ -16,6 +16,7 @@ jobs:
       - uses: actions/checkout@v4
       - name: Build the sysroots
         run: |
+          rustup toolchain install nightly
           cargo install -f rustup-toolchain-install-master
           ./miri toolchain -c rust-docs # Docs are the only place targets are separated by tier
           ./miri install

CONTRIBUTING.md

@@ -153,7 +153,7 @@ MIRI_LOG=rustc_mir::interpret=info,miri::stacked_borrows ./miri run tests/pass/v
 
 Note that you will only get `info`, `warn` or `error` messages if you use a prebuilt compiler.
 In order to get `debug` and `trace` level messages, you need to build miri with a locally built
-compiler that has `debug=true` set in `config.toml`.
+compiler that has `debug=true` set in `bootstrap.toml`.
 
 #### Debugging error messages