Import std::io directly

src/config.rs

@@ -1,3 +1,5 @@
+#[cfg(feature = "rustls-native-certs")]
+use std::io;
 #[cfg(feature = "rustls-platform-verifier")]
 use std::sync::Arc;
 
@@ -30,9 +32,7 @@ pub trait ConfigBuilderExt {
     /// This will return an error if no valid certs were found. In that case,
     /// it's recommended to use `with_webpki_roots`.
     #[cfg(feature = "rustls-native-certs")]
-    fn with_native_roots(
-        self,
-    ) -> Result<ConfigBuilder<ClientConfig, WantsClientCert>, std::io::Error>;
+    fn with_native_roots(self) -> Result<ConfigBuilder<ClientConfig, WantsClientCert>, io::Error>;
 
     /// This configures the webpki roots, which are Mozilla's set of
     /// trusted roots as packaged by webpki-roots.
@@ -51,9 +51,7 @@ impl ConfigBuilderExt for ConfigBuilder<ClientConfig, WantsVerifier> {
 
     #[cfg(feature = "rustls-native-certs")]
     #[cfg_attr(not(feature = "logging"), allow(unused_variables))]
-    fn with_native_roots(
-        self,
-    ) -> Result<ConfigBuilder<ClientConfig, WantsClientCert>, std::io::Error> {
+    fn with_native_roots(self) -> Result<ConfigBuilder<ClientConfig, WantsClientCert>, io::Error> {
         let mut roots = rustls::RootCertStore::empty();
         let mut valid_count = 0;
         let mut invalid_count = 0;
@@ -64,8 +62,8 @@ impl ConfigBuilderExt for ConfigBuilder<ClientConfig, WantsVerifier> {
         }
 
         if certs.is_empty() {
-            return Err(std::io::Error::new(
-                std::io::ErrorKind::NotFound,
+            return Err(io::Error::new(
+                io::ErrorKind::NotFound,
                 format!("no native root CA certificates found (errors: {errors:?})"),
             ));
         }
@@ -87,8 +85,8 @@ impl ConfigBuilderExt for ConfigBuilder<ClientConfig, WantsVerifier> {
         );
         if roots.is_empty() {
             crate::log::debug!("no valid native root CA certificates found");
-            Err(std::io::Error::new(
-                std::io::ErrorKind::NotFound,
+            Err(io::Error::new(
+                io::ErrorKind::NotFound,
                 format!("no valid native root CA certificates found ({invalid_count} invalid)"),
             ))?
         }