Run clippy from MSRV.

I don't want lints that tell me to fix things that don't work in the
MSRV.

Unfortunately I also have to unify the MSRV for cortex-m and cortex-m-rt,
raising the cortex-m MSRV to 1.61.

Author: thejpster

.github/workflows/clippy.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/rust-toolchain@1.61
         with:
           components: clippy
       - run: cargo clippy --all --features cortex-m/critical-section-single-core -- --deny warnings

cortex-m/CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+- MSRV is 1.61 to match cortex-m-rt crate
+
 ## [v0.7.7] - 2023-01-03
 
 - Add missing documentation for `critical-section-single-core` feature added

cortex-m/Cargo.toml

@@ -14,6 +14,7 @@ repository = "https://github.com/rust-embedded/cortex-m"
 version = "0.7.7"
 edition = "2018"
 links = "cortex-m"  # prevent multiple versions of this crate to be linked together
+rust-version = "1.61"
 
 [dependencies]
 bare-metal = { version = "0.2.4", features = ["const-fn"] }

cortex-m/README.md

@@ -11,7 +11,7 @@ This project is developed and maintained by the [Cortex-M team][team].
 
 ## Minimum Supported Rust Version (MSRV)
 
-This crate is guaranteed to compile on stable Rust 1.59 and up. It might compile with older versions but that may change in any new patch release.
+This crate is guaranteed to compile on stable Rust 1.61 and up. It might compile with older versions but that may change in any new patch release.
 
 ## License