Fix a few new clippys

Author: flihp

dice-mfg/src/lib.rs

@@ -550,7 +550,7 @@ impl CertSigner {
             fs::canonicalize(&self.openssl_cnf).with_context(|| {
                 format!(
                     "failed to canonicalize path to OpenSSL config: {}",
-                    &self.openssl_cnf.display()
+                    self.openssl_cnf.display()
                 )
             })?;
         let csr_in = fs::canonicalize(csr_in).with_context(|| {

yhsm-audit/src/main.rs

@@ -133,7 +133,7 @@ fn do_hash<R: Read>(reader: &mut R, inform: Encoding) -> Result<()> {
         }
     };
 
-    debug!("buf: {:?}", &buf);
+    debug!("buf: {:?}", buf);
     debug!("hashing {:?}", &buf[..16]);
 
     let mut hasher = Sha256::new();