Fixing "'cargo-fmt.exe' is not installed". (#1122)

* Fixing "'cargo-fmt.exe' is not installed".

src/Qir/Runtime/prerequisites.ps1

@@ -78,7 +78,9 @@ if ($Env:ENABLE_QIRRUNTIME -ne "false") {
     # rustfmt and clippy is available.
     rustup install nightly
     rustup toolchain install nightly
+    rustup toolchain install nightly-2022-08-01
     rustup component add rustfmt clippy llvm-tools-preview
     rustup component add rustfmt clippy llvm-tools-preview --toolchain nightly
+    rustup component add rustfmt clippy llvm-tools-preview --toolchain nightly-2022-08-01
     }
 

src/Simulation/qdk_sim_rs/prerequisites.ps1

@@ -22,5 +22,7 @@ if (-not (Get-Command rustup -ErrorAction SilentlyContinue)) {
 # rustfmt and clippy is available.
 rustup install nightly
 rustup toolchain install nightly
+rustup toolchain install nightly-2022-08-01
 rustup component add rustfmt clippy llvm-tools-preview
 rustup component add rustfmt clippy llvm-tools-preview --toolchain nightly
+rustup component add rustfmt clippy llvm-tools-preview --toolchain nightly-2022-08-01