cargo: Bump rustc to 1.89 (#36818)

Update Rustc to 1.89.

Reviewable by commit.

Leftover work:
- #37330 
- #38777

---------

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
Co-authored-by: sagudev <16504129+sagudev@users.noreply.github.com>

components/net/decoder.rs

@@ -285,7 +285,7 @@ impl Stream for BodyStream {
                         return Poll::Ready(None);
                     }
                 }
-                Poll::Ready(Some(Err(io::Error::new(io::ErrorKind::Other, err))))
+                Poll::Ready(Some(Err(io::Error::other(err))))
             },
             None => Poll::Ready(None),
         }

components/net/fetch/methods.rs

@@ -832,7 +832,7 @@ fn create_about_memory(url: ServoUrl, timing_type: ResourceTimingType) -> Respon
 
 /// Handle a request from the user interface to ignore validation errors for a certificate.
 fn handle_allowcert_request(request: &mut Request, context: &FetchContext) -> io::Result<()> {
-    let error = |string| Err(io::Error::new(io::ErrorKind::Other, string));
+    let error = |string| Err(io::Error::other(string));
 
     let body = match request.body.as_mut() {
         Some(body) => body,

components/net/hosts.rs

@@ -49,7 +49,7 @@ pub fn parse_hostsfile(hostsfile_content: &str) -> HashMap<String, IpAddr> {
         .collect()
 }
 
-pub fn replace_host(host: &str) -> Cow<str> {
+pub fn replace_host(host: &str) -> Cow<'_, str> {
     HOST_TABLE
         .lock()
         .unwrap()

components/net/http_loader.rs

@@ -2017,7 +2017,7 @@ async fn http_network_fetch(
         .iter()
         .map(|header_value| header_value.to_str().unwrap_or(""))
         .collect();
-    let wildcard_present = header_strings.iter().any(|header_str| *header_str == "*");
+    let wildcard_present = header_strings.contains(&"*");
     // The spec: https://www.w3.org/TR/resource-timing-2/#sec-timing-allow-origin
     // says that a header string is either an origin or a wildcard so we can just do a straight
     // check against the document origin

components/net/indexeddb/engines/sqlite/database_model.rs

@@ -12,6 +12,7 @@ pub enum Column {
     Version,
 }
 
+#[allow(dead_code)]
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Model {
     pub name: String,

components/net/indexeddb/engines/sqlite/object_store_index_model.rs

@@ -14,6 +14,7 @@ pub enum Column {
     MultiEntryIndex,
 }
 
+#[allow(dead_code)]
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Model {
     pub id: i32,

components/net/websocket_loader.rs

@@ -48,6 +48,8 @@ use crate::fetch::methods::{
 };
 use crate::hosts::replace_host;
 use crate::http_loader::HttpState;
+
+#[allow(clippy::result_large_err)]
 /// Create a tungstenite Request object for the initial HTTP request.
 /// This request contains `Origin`, `Sec-WebSocket-Protocol`, `Authorization`,
 /// and `Cookie` headers as appropriate.
@@ -105,6 +107,7 @@ fn create_request(
     Ok(request)
 }
 
+#[allow(clippy::result_large_err)]
 /// Process an HTTP response resulting from a WS handshake.
 /// This ensures that any `Cookie` or HSTS headers are recognized.
 /// Returns an error if the protocol selected by the handshake doesn't