message: Bump MSRV to 1.43
  This was broken in lalrpop/lalrpop#564. See for more information.
diff: @@ -26,7 +26,7 @@ jobs:
  runs-on: ubuntu-20.04
  strategy:
  matrix:
  - rust: ["1.42.0", "stable", "beta", "nightly"]
  + rust: ["1.43.0", "stable", "beta", "nightly"]
  name: Check (${{ matrix.rust }})
  steps:
  - uses: actions/checkout@v2
  @@ -45,7 +45,7 @@ jobs:
  runs-on: ubuntu-20.04
  strategy:
  matrix:
  - rust: ["1.42.0", "stable", "beta", "nightly"]
  + rust: ["1.43.0", "stable", "beta", "nightly"]
  name: Test Suite (${{ matrix.rust }})
  steps:
  - uses: actions/checkout@v2
  @@ -85,7 +85,7 @@ jobs:
  # runs-on: ubuntu-20.04
  # strategy:
  # matrix:
  -# rust: ["1.42.0", "stable", "beta", "nightly"]
  +# rust: ["1.43.0", "stable", "beta", "nightly"]
  # name: Clippy (${{ matrix.rust }})
  # steps:
  # - uses: actions/checkout@v2
  