Revert "Increase Rust version in continuous integration from 1.72 to …

…1.76 so 'bumpalo' will work"

This reverts commit 89c1d1b.
Can't change CI rules, not owner.

.github/workflows/ci.yml

@@ -41,7 +41,7 @@ jobs:
  - name: Set up Rust toolchain
  id: setup-rust
  run: |
- rustup toolchain install 1.76 -c clippy -t ${{ matrix.target }}
+ rustup toolchain install 1.72 -c clippy -t ${{ matrix.target }}
 
  - name: Install cargo-nextest and cargo-llvm-cov
  uses: taiki-e/install-action@v2
@@ -56,21 +56,21 @@ jobs:
 
  - name: build
  run: |
- cargo +1.76 build --target ${{ matrix.target }} --profile ci
+ cargo +1.72 build --target ${{ matrix.target }} --profile ci
  if: matrix.target != 'wasm32-unknown-unknown'
 
  - name: clippy (rend3-gltf featureless)
  run: |
- cargo +1.76 clippy --target ${{ matrix.target }} --profile ci -p rend3-gltf --no-default-features
+ cargo +1.72 clippy --target ${{ matrix.target }} --profile ci -p rend3-gltf --no-default-features
 
  - name: clippy
  run: |
- cargo +1.76 clippy --target ${{ matrix.target }} --profile ci
+ cargo +1.72 clippy --target ${{ matrix.target }} --profile ci
  if: matrix.target != 'wasm32-unknown-unknown'
 
  - name: doc
  run: |
- cargo +1.76 doc --target ${{ matrix.target }} --profile ci --no-deps
+ cargo +1.72 doc --target ${{ matrix.target }} --profile ci --no-deps
  if: matrix.target != 'wasm32-unknown-unknown'
 
  - name: download test resources
@@ -80,7 +80,7 @@ jobs:
 
  - name: test
  run: |
- cargo +1.76 nextest run --target ${{ matrix.target }} --cargo-profile ci --no-fail-fast
+ cargo +1.72 nextest run --target ${{ matrix.target }} --cargo-profile ci --no-fail-fast
  if: matrix.target != 'wasm32-unknown-unknown'
 
  - uses: actions/upload-artifact@v4
@@ -101,11 +101,11 @@ jobs:
  - name: Set up Rust toolchain
  id: setup-rust
  run: |
- rustup toolchain install 1.76 -c rustfmt
+ rustup toolchain install 1.72 -c rustfmt
 
  - name: format
  run: |
- cargo +1.76 fmt --check
+ cargo +1.72 fmt --check
 
  cargo-deny:
  runs-on: ubuntu-latest