the latest nightly rust build (1.78.0) has a regression causing fuzz targets to fail to link on Linux. Revert to the previous release

Author: arvidn

.github/workflows/build-test.yml

@@ -190,7 +190,7 @@ jobs:
         with:
           fetch-depth: 1
       - name: Install rust
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@stable
         with:
             components: rustfmt, clippy
       - name: fmt
@@ -202,14 +202,14 @@ jobs:
           cd fuzz
           cargo clippy
       - name: cargo-fuzz
-        run: cargo +nightly install cargo-fuzz
+        run: cargo install cargo-fuzz
       # TODO: it would be nice to save and restore the corpus between runs
       - name: build corpus
         run: |
           cd tools
           cargo run --bin generate-fuzz-corpus
       - name: build
-        run: cargo fuzz list | xargs -I "%" sh -c "cargo +nightly fuzz run % -- -max_total_time=30 || exit 255"
+        run: cargo fuzz list | xargs -I "%" sh -c "cargo fuzz run % -- -max_total_time=30 || exit 255"
 
   unit_tests:
     name: Unit tests