Update to Rust 1.78 (#1570)

This updates the versions in our build and release pipelines to use Rust
1.78 and fixes a new clippy warning generated by the new rust version

---------

Co-authored-by: Stefan J. Wernli <swernli@microsoft.com>

.ado/build.yml

@@ -8,7 +8,7 @@ pr:
 
 variables:
   CARGO_TERM_COLOR: always
-  RUST_TOOLCHAIN_VERSION: "1.77"
+  RUST_TOOLCHAIN_VERSION: "1.78"
 
 schedules:
 - cron: "0 9 * * Sat"

.ado/publish.yml

@@ -5,7 +5,7 @@ pr: none
 
 variables:
   CARGO_TERM_COLOR: always
-  RUST_TOOLCHAIN_VERSION: "1.77"
+  RUST_TOOLCHAIN_VERSION: "1.78"
 
 # 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: "1.77"
+  RUST_TOOLCHAIN_VERSION: "1.78"
   RUST_TOOLCHAIN_COMPONENTS: rustfmt clippy
 
 jobs:

.github/workflows/publish-playground.yml

@@ -11,7 +11,7 @@ on:
 
 env:
   CARGO_TERM_COLOR: always
-  RUST_TOOLCHAIN_VERSION: "1.77"
+  RUST_TOOLCHAIN_VERSION: "1.78"
   RUST_TOOLCHAIN_COMPONENTS: rustfmt clippy
 
 # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages

compiler/qsc/src/bin/qsc.rs

@@ -33,7 +33,7 @@ pub enum Profile {
     Unrestricted,
     /// This profile restricts the set of operations to those that are supported by the Base profile.
     Base,
-    /// This profile restricts the set of operations to those that are supported by the AdaptiveRI profile.
+    /// This profile restricts the set of operations to those that are supported by the `AdaptiveRI` profile.
     AdaptiveRI,
 }
 

prereqs.py

@@ -13,14 +13,14 @@
 import functools
 
 python_ver = (3, 11)  # Python support for Windows on ARM64 requires v3.11 or later
-rust_ver = (1, 77)  # Ensure Rust version 1.77 or later is installed
+rust_ver = (1, 78)  # Ensure Rust version 1.78 or later is installed
 node_ver = (
     18,
     17,
 )
 wasmpack_ver = (0, 12, 1)  # Latest tested wasm-pack version
-rust_fmt_ver = (1, 7, 0)  # Current version when Rust 1.77 shipped
-clippy_ver = (0, 1, 76)
+rust_fmt_ver = (1, 7, 0)  # Current version when Rust 1.78 shipped
+clippy_ver = (0, 1, 78)
 
 # Disable buffered output so that the log statements and subprocess output get interleaved in proper order
 print = functools.partial(print, flush=True)