url: fix warnings from doc tests

url/src/lib.rs

@@ -1057,7 +1057,7 @@ impl Url {
     /// use url::Url;
     /// # use std::error::Error;
     ///
-    /// # fn run() -> Result<(), Box<Error>> {
+    /// # fn run() -> Result<(), Box<dyn Error>> {
     /// let url = Url::parse("https://example.com/foo/bar")?;
     /// let mut path_segments = url.path_segments().ok_or_else(|| "cannot be base")?;
     /// assert_eq!(path_segments.next(), Some("foo"));
@@ -1450,7 +1450,7 @@ impl Url {
     /// use url::Url;
     /// # use std::error::Error;
     ///
-    /// # fn run() -> Result<(), Box<Error>> {
+    /// # fn run() -> Result<(), Box<dyn Error>> {
     /// let mut url = Url::parse("ssh://example.net:2048/")?;
     ///
     /// url.set_port(Some(4096)).map_err(|_| "cannot be base")?;
@@ -1469,7 +1469,7 @@ impl Url {
     /// use url::Url;
     /// # use std::error::Error;
     ///
-    /// # fn run() -> Result<(), Box<Error>> {
+    /// # fn run() -> Result<(), Box<dyn Error>> {
     /// let mut url = Url::parse("https://example.org/")?;
     ///
     /// url.set_port(Some(443)).map_err(|_| "cannot be base")?;

url/src/path_segments.rs

@@ -21,7 +21,7 @@ use std::str;
 /// use url::Url;
 /// # use std::error::Error;
 ///
-/// # fn run() -> Result<(), Box<Error>> {
+/// # fn run() -> Result<(), Box<dyn Error>> {
 /// let mut url = Url::parse("mailto:me@example.com")?;
 /// assert!(url.path_segments_mut().is_err());
 ///
@@ -80,7 +80,7 @@ impl<'a> PathSegmentsMut<'a> {
     /// use url::Url;
     /// # use std::error::Error;
     ///
-    /// # fn run() -> Result<(), Box<Error>> {
+    /// # fn run() -> Result<(), Box<dyn Error>> {
     /// let mut url = Url::parse("https://github.com/servo/rust-url/")?;
     /// url.path_segments_mut().map_err(|_| "cannot be base")?
     ///     .clear().push("logout");
@@ -108,7 +108,7 @@ impl<'a> PathSegmentsMut<'a> {
     /// use url::Url;
     /// # use std::error::Error;
     ///
-    /// # fn run() -> Result<(), Box<Error>> {
+    /// # fn run() -> Result<(), Box<dyn Error>> {
     /// let mut url = Url::parse("https://github.com/servo/rust-url/")?;
     /// url.path_segments_mut().map_err(|_| "cannot be base")?
     ///     .push("pulls");
@@ -177,7 +177,7 @@ impl<'a> PathSegmentsMut<'a> {
     /// use url::Url;
     /// # use std::error::Error;
     ///
-    /// # fn run() -> Result<(), Box<Error>> {
+    /// # fn run() -> Result<(), Box<dyn Error>> {
     /// let mut url = Url::parse("https://github.com/")?;
     /// let org = "servo";
     /// let repo = "rust-url";
@@ -197,7 +197,7 @@ impl<'a> PathSegmentsMut<'a> {
     /// use url::Url;
     /// # use std::error::Error;
     ///
-    /// # fn run() -> Result<(), Box<Error>> {
+    /// # fn run() -> Result<(), Box<dyn Error>> {
     /// let mut url = Url::parse("https://github.com/servo")?;
     /// url.path_segments_mut().map_err(|_| "cannot be base")?
     ///     .extend(&["..", "rust-url", ".", "pulls"]);