chore: Update MSRV to Rust 1.92

Restore let chains and is_multiple_of() which are stable in 1.92.

Author: pbeets

.github/workflows/ci.yml

@@ -42,13 +42,13 @@ jobs:
       - run: cargo test -- --test-threads=1
 
   msrv:
-    name: MSRV (1.85)
+    name: MSRV (1.92)
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: "1.85"
+          toolchain: "1.92"
       - uses: Swatinem/rust-cache@v2
       - run: cargo build --all-targets
 

src/ping_manager.rs

@@ -57,11 +57,11 @@ impl PingManager {
     /// Returns `true` and clears pending state if timeout exceeded.
     /// Call when the instant from `next_timeout_at()` is reached.
     pub fn check_timeout(&mut self) -> bool {
-        if let Some(sent_at) = self.pending {
-            if sent_at.elapsed() > self.timeout {
-                self.pending = None;
-                return true;
-            }
+        if let Some(sent_at) = self.pending
+            && sent_at.elapsed() > self.timeout
+        {
+            self.pending = None;
+            return true;
         }
         false
     }

src/ws.rs

@@ -150,7 +150,7 @@ async fn connect_with_retry(
     loop {
         let selected_url = if attempt == 1 {
             primary_url
-        } else if attempt % 2 == 0 {
+        } else if attempt.is_multiple_of(2) {
             secondary_url
         } else {
             primary_url