Revert "Work around Rust ICE in CI"

This reverts commit f9a91a6.

Author: d-e-s-o

.github/workflows/test.yml

@@ -188,11 +188,7 @@ jobs:
         sudo apt-get update
         sudo apt-get install --yes --no-install-recommends gcc-multilib libelf-dev zlib1g-dev
     - uses: actions/checkout@v6
-    - uses: dtolnay/rust-toolchain@master
-      with:
-        # TODO: Remove specification and switch back to @nightly once
-        #       https://github.com/rust-lang/rust/issues/151008 is fixed
-        toolchain: 'nightly-2026-01-09'
+    - uses: dtolnay/rust-toolchain@nightly
     - uses: Swatinem/rust-cache@v2
     - uses: actions/setup-python@v6
       id: py312
@@ -323,11 +319,7 @@ jobs:
         sudo apt-get update
         sudo apt-get install --yes --no-install-recommends gcc-multilib libelf-dev zlib1g-dev
     - uses: actions/checkout@v6
-    - uses: dtolnay/rust-toolchain@master
-      with:
-        # TODO: Remove specification and switch back to @nightly once
-        #       https://github.com/rust-lang/rust/issues/151008 is fixed
-        toolchain: 'nightly-2026-01-09'
+    - uses: dtolnay/rust-toolchain@nightly
     - uses: Swatinem/rust-cache@v2
       with:
         key: ${{ matrix.sanitizer }}