Update to Rust 1.76, fix lints (#1229)

Fixes #1209

Author: swernli

.ado/publish.yml

@@ -5,7 +5,7 @@ pr: none
 
 variables:
   CARGO_TERM_COLOR: always
-  RUST_TOOLCHAIN_VERSION: "1.75"
+  RUST_TOOLCHAIN_VERSION: "1.76"
 
 # variables set by pipeline
 # - BASE_IMAGE

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ env:
   CARGO_TERM_COLOR: always
   NODE_VERSION: "18.17.1"
   PYTHON_VERSION: "3.11"
-  RUST_TOOLCHAIN_VERSION: "1.75"
+  RUST_TOOLCHAIN_VERSION: "1.76"
   RUST_TOOLCHAIN_COMPONENTS: rustfmt clippy
 
 jobs:

.github/workflows/publish-playground.yml

@@ -11,7 +11,7 @@ on:
 
 env:
   CARGO_TERM_COLOR: always
-  RUST_TOOLCHAIN_VERSION: "1.75"
+  RUST_TOOLCHAIN_VERSION: "1.76"
   RUST_TOOLCHAIN_COMPONENTS: rustfmt clippy
 
 # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages