feat: update toolchain to 1.81.0

CHANGELOG.md

@@ -14,7 +14,7 @@ All notable changes to eww will be listed here, starting at changes since versio
 - Fix wayland monitor names support (By: dragonnn)
 
 ### Features
-- Update rust toolchain to 1.80.1 (By: w-lfchen)
+- Update rust toolchain to 1.81.0 (By: w-lfchen)
 - Add `:fill-svg` and `:preserve-aspect-ratio` properties to images (By: hypernova7, w-lfchen)
 - Add `:truncate` property to labels, disabled by default (except in cases where truncation would be enabled in version `0.5.0` and before) (By: Rayzeq).
 - Add support for `:hover` css selectors for tray items (By: zeapoz)

crates/eww/src/error_handling_ctx.rs

@@ -31,9 +31,6 @@ pub fn print_error(err: anyhow::Error) {
 }
 
 pub fn format_error(err: &anyhow::Error) -> String {
-    for err in err.chain() {
-        format!("chain: {}", err);
-    }
     anyhow_err_to_diagnostic(err).and_then(|diag| stringify_diagnostic(diag).ok()).unwrap_or_else(|| format!("{:?}", err))
 }