Fix remaining nightly clippy lints (#19881)

Co-authored-by: Zanie Blue <contact@zanie.dev>

crates/uv-resolver/src/error.rs

@@ -1137,10 +1137,9 @@ fn merge_unavailable_versions(
     let (unchanged_cause, merged_versions, merged_is_cause2) =
         if let Some(merged_versions) = merge(&derived.cause2) {
             (derived.cause1.clone(), merged_versions, true)
-        } else if let Some(merged_versions) = merge(&derived.cause1) {
-            (derived.cause2.clone(), merged_versions, false)
         } else {
-            return None;
+            let merged_versions = merge(&derived.cause1)?;
+            (derived.cause2.clone(), merged_versions, false)
         };
 
     let merged_cause = Arc::new(DerivationTree::External(External::Custom(
@@ -1746,6 +1745,7 @@ mod tests {
             cause2: Arc::new(leaf),
         }));
 
-        assert_eq!(format!("{:?}", &*tree), format!("{tree:?}"));
+        let inner = &*tree;
+        assert_eq!(format!("{inner:?}"), format!("{tree:?}"));
     }
 }

crates/uv-resolver/src/pubgrub/report.rs

@@ -698,7 +698,7 @@ impl PubGrubReportFormatter<'_> {
                 let external1 = self.format_external(external1);
                 let external2 = self.format_external(external2);
 
-                format!("{}and {}", padded("", &external1, " "), &external2)
+                format!("{}and {}", padded("", &external1, " "), external2)
             }
         }
     }

crates/uv/src/commands/pip/loggers.rs

@@ -398,7 +398,7 @@ impl InstallLogger for UpgradeInstallLogger {
                         printer.stderr(),
                         "{} {} {}",
                         "Reinstalled".yellow().bold(),
-                        &self.target,
+                        self.target,
                         reinstalls
                     )?;
                 } else {
@@ -416,7 +416,7 @@ impl InstallLogger for UpgradeInstallLogger {
                         printer.stderr(),
                         "{} {} {} -> {}",
                         "Updated".green().bold(),
-                        &self.target,
+                        self.target,
                         removals,
                         additions
                     )?;
@@ -432,7 +432,7 @@ impl InstallLogger for UpgradeInstallLogger {
                     printer.stderr(),
                     "{} {} {}",
                     "Removed".red().bold(),
-                    &self.target,
+                    self.target,
                     removals
                 )?;
             }
@@ -446,7 +446,7 @@ impl InstallLogger for UpgradeInstallLogger {
                     printer.stderr(),
                     "{} {} {}",
                     "Added".green().bold(),
-                    &self.target,
+                    self.target,
                     additions
                 )?;
             }
@@ -455,7 +455,7 @@ impl InstallLogger for UpgradeInstallLogger {
                     printer.stderr(),
                     "{} {} {}",
                     "Modified".dimmed(),
-                    &self.target.dimmed().bold(),
+                    self.target.dimmed().bold(),
                     "environment".dimmed()
                 )?;
             }

crates/uv/src/commands/pip/operations.rs

@@ -234,7 +234,7 @@ pub(crate) async fn resolve<InstalledPackages: InstalledPackagesProvider>(
             // Complain if dependency groups are named that don't appear.
             for name in groups.explicit_names() {
                 if !metadata.dependency_groups.contains_key(name) {
-                    return Err(anyhow!(
+                    Err(anyhow!(
                         "The dependency group '{name}' was not found in the project: {}",
                         pyproject_path.user_display()
                     ))?;

crates/uv/tests/pip_install/pip_install.rs

@@ -777,7 +777,7 @@ async fn install_remote_requirements_txt() -> Result<()> {
 
     let server_url = start_requirements_server(username, password, requirements_txt).await;
 
-    let mut requirements_url = Url::parse(&format!("{}/requirements.txt", &server_url))?;
+    let mut requirements_url = Url::parse(&format!("{server_url}/requirements.txt"))?;
 
     // Should fail without credentials
     uv_snapshot!(context.filters(), context.pip_install()
@@ -824,7 +824,7 @@ async fn install_remote_requirements_txt() -> Result<()> {
     let requirements_txt = "iniconfig";
     // Update the mock server to serve a new requirements.txt
     let server_url = start_requirements_server(username, password, requirements_txt).await;
-    let mut requirements_url = Url::parse(&format!("{}/requirements.txt", &server_url))?;
+    let mut requirements_url = Url::parse(&format!("{server_url}/requirements.txt"))?;
     let _ = requirements_url.set_username(username);
     let _ = requirements_url.set_password(Some(password));