Enable -Zcheck-cfg for nightly toolchain testing in CI

.github/workflows/rust.yml

@@ -2,7 +2,7 @@ name: Rust
 
 on:
  push:
- branches: [ 
+ branches: [
  master,
  auto, # used for bors
  try # used for bors
@@ -29,10 +29,10 @@ jobs:
  run: cargo test --verbose --all
  - name: Docs
  run: cargo doc --verbose --all
- 
+
  build_beta:
  runs-on: ubuntu-latest
- 
+
  steps:
  - uses: actions/checkout@v2
  - uses: actions-rs/toolchain@v1
@@ -54,7 +54,7 @@ jobs:
 
  build_nightly:
  runs-on: ubuntu-latest
- 
+
  steps:
  - uses: actions/checkout@v2
  - uses: actions-rs/toolchain@v1
@@ -64,19 +64,19 @@ jobs:
  - uses: actions-rs/cargo@v1
  with:
  command: build
- args: --verbose --all
+ args: --verbose --all -Zcheck-cfg
  - uses: actions-rs/cargo@v1
  with:
  command: test
- args: --verbose --all
+ args: --verbose --all -Zcheck-cfg
  - uses: actions-rs/cargo@v1
  with:
  command: doc
  args: --verbose --all
- 
+
  check_big_endian:
  runs-on: ubuntu-latest
- 
+
  steps:
  - uses: actions/checkout@v2
  - uses: actions-rs/toolchain@v1