fix lint

Author: georgehao

.github/workflows/lint.yaml

@@ -21,6 +21,7 @@ jobs:
       - uses: rui314/setup-mold@v1
       - uses: dtolnay/rust-toolchain@clippy
         with:
+          toolchain: nightly-2026-01-05
           components: clippy
       - uses: Swatinem/rust-cache@v2
         with:
@@ -38,6 +39,7 @@ jobs:
       - uses: rui314/setup-mold@v1
       - uses: dtolnay/rust-toolchain@nightly
         with:
+          toolchain: nightly-2026-01-05
           components: rustfmt
       - name: Run fmt
         run: cargo fmt --all --check
@@ -59,6 +61,8 @@ jobs:
       - uses: actions/checkout@v6
       - uses: rui314/setup-mold@v1
       - uses: dtolnay/rust-toolchain@nightly
+        with:
+          toolchain: nightly-2026-01-05
       - uses: Swatinem/rust-cache@v2
         with:
           cache-on-failure: true
@@ -88,6 +92,8 @@ jobs:
       - uses: actions/checkout@v6
       - uses: rui314/setup-mold@v1
       - uses: dtolnay/rust-toolchain@nightly
+        with:
+          toolchain: nightly-2026-01-05
       - uses: Swatinem/rust-cache@v2
         with:
           cache-on-failure: true