fix clippy

src/aws/credential.rs

@@ -441,12 +441,8 @@ impl AssumeRoleLoader {
 
         let (mut parts, body) = req.into_parts();
         self.sts_signer.sign(&mut parts, &source_cred)?;
-        let req =
-            reqwest::Request::try_from(http::Request::from_parts(parts, body)).or_else(|_| {
-                Err(anyhow!(
-                    "failed to convert http::Request to reqwest::Request"
-                ))
-            })?;
+        let req = reqwest::Request::try_from(http::Request::from_parts(parts, body))
+            .map_err(|_| anyhow!("failed to convert http::Request to reqwest::Request"))?;
 
         let resp = self.client.execute(req).await?;
         if resp.status() != http::StatusCode::OK {

src/huaweicloud/obs/signer.rs

@@ -55,12 +55,12 @@ impl Signer {
 
     fn build(
         &self,
-        mut parts: &mut http::request::Parts,
+        parts: &mut http::request::Parts,
         method: SigningMethod,
         cred: &Credential,
     ) -> Result<SigningContext> {
         let now = self.time.unwrap_or_else(now);
-        let mut ctx = SigningContext::build(&mut parts)?;
+        let mut ctx = SigningContext::build(parts)?;
 
         let string_to_sign = string_to_sign(&mut ctx, cred, now, method, &self.bucket)?;
         let signature =

src/tencent/cos.rs

@@ -97,19 +97,19 @@ impl Signer {
     }
 
     /// Signing request with header.
-    pub fn sign(&self, mut parts: &mut http::request::Parts, cred: &Credential) -> Result<()> {
-        let ctx = self.build(&mut parts, SigningMethod::Header, cred)?;
+    pub fn sign(&self, parts: &mut http::request::Parts, cred: &Credential) -> Result<()> {
+        let ctx = self.build(parts, SigningMethod::Header, cred)?;
         ctx.apply(parts)
     }
 
     /// Signing request with query.
     pub fn sign_query(
         &self,
-        mut parts: &mut http::request::Parts,
+        parts: &mut http::request::Parts,
         expire: Duration,
         cred: &Credential,
     ) -> Result<()> {
-        let ctx = self.build(&mut parts, SigningMethod::Query(expire), cred)?;
+        let ctx = self.build(parts, SigningMethod::Query(expire), cred)?;
         ctx.apply(parts)
     }
 }