pin nightly to create reproducible linting result in public dependenc…

…y check

.github/workflows/rust.yml

@@ -158,6 +158,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@nightly
+      with:
+        toolchain: nightly-2024-07-01
     - name: build
       run: |
         echo "#![deny(exported_private_dependencies)]" | cat - src/lib.rs > src/lib.rs.0

src/buffer_par.rs

@@ -1,3 +1,4 @@
+#![allow(exported_private_dependencies)]
 use rayon::iter::plumbing::*;
 use rayon::iter::{IndexedParallelIterator, ParallelIterator};
 use rayon::slice::{ChunksExact, ChunksExactMut, ParallelSlice, ParallelSliceMut};