Update ci.yml

Author: maxijabase

.github/workflows/ci.yml

@@ -17,14 +17,12 @@ jobs:
         include:
           - os: windows-latest
           - os: ubuntu-latest
-    env:
-        RUST_BACKTRACE: 1
     steps:
       - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: "1.89.0"
           override: true
       - uses: actions-rs/cargo@v1
         with:
@@ -38,7 +36,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: "1.89.0"
           override: true
       - run: rustup component add rustfmt
       - uses: actions-rs/cargo@v1
@@ -53,7 +51,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: stable
+          toolchain: "1.89.0"
           components: clippy
           override: true
       - uses: actions-rs/clippy-check@v1