fix: nightly execution

.github/workflows/main.yml

@@ -29,7 +29,7 @@ jobs:
       - run: rustc --version
       - run: cargo fmt --all -- --check
       - run: cargo clippy -- -D warnings -A unknown-lints
-        if: matrix.rust-version == 'nightly'
+        if: matrix.rust-version != 'nightly'
       - run: cargo build
       - run: cargo build --release
   build-wasm:
@@ -57,7 +57,7 @@ jobs:
       - run: rustc --version
       - run: cargo fmt --all -- --check
       - run: cargo clippy -- -D warnings -A unknown-lints
-        if: matrix.rust-version == 'nightly'
+        if: matrix.rust-version != 'nightly'
       - run: cargo install wasm-pack
       - run: wasm-pack build --release --target=web --out-dir=frontends/web/lib -- --features wasm
       - run: apt-get update && apt-get install -y -q nodejs npm