Pin nightly version in CI

Author: Dirbaio

.github/workflows/ci.yml

@@ -43,7 +43,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        rust: [nightly]
+        rust: [nightly-2022-11-22]
         TARGET: [x86_64-unknown-linux-gnu, thumbv6m-none-eabi, thumbv7m-none-eabi]
 
     steps:

.github/workflows/clippy.yml

@@ -26,7 +26,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly
+          toolchain: nightly-2022-11-22
           override: true
           components: clippy
       - run: cargo clippy

.github/workflows/rustfmt.yml

@@ -29,7 +29,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly
+          toolchain: nightly-2022-11-22
           override: true
           components: rustfmt
       - run: cargo fmt --all -- --check