Use nightly clippy

.github/workflows/main.yml

@@ -80,7 +80,7 @@ jobs:
       - uses: actions/checkout@v2.3.4
       - uses: actions-rs/toolchain@v1.0.7
         with:
-          toolchain: stable
+          toolchain: nightly
           override: true
       - name: Run clippy
         uses: actions-rs/clippy-check@v1

src/lib.rs

@@ -183,7 +183,7 @@ impl Arbitrary for StaticSecret {
             .prop_filter("Valid scalar mod l", |b| {
                 Scalar::from_bytes_mod_order(*b).is_canonical()
             })
-            .prop_map(|bytes| return Self::from(bytes))
+            .prop_map(Self::from)
             .boxed()
     }
 
@@ -193,7 +193,6 @@ impl Arbitrary for StaticSecret {
 #[cfg(test)]
 mod tests {
 
-    use bincode;
     use rand_core::OsRng;
 
     use super::*;