Fix latest deps CI (#13734)

.github/workflows/latest_deps.yml

@@ -5,7 +5,7 @@
 #
 # As an overview this workflow:
 # - checks out develop,
-# - installs from source, pulling in the dependencies like a fresh `pip install` would, and 
+# - installs from source, pulling in the dependencies like a fresh `pip install` would, and
 # - runs mypy and test suites in that checkout.
 #
 # Based on the twisted trunk CI job.
@@ -26,12 +26,19 @@ jobs:
  runs-on: ubuntu-latest
  steps:
  - uses: actions/checkout@v2
+ - name: Install Rust
+ uses: actions-rs/toolchain@v1
+ with:
+ toolchain: stable
+ override: true
+ - uses: Swatinem/rust-cache@v2
+
  # The dev dependencies aren't exposed in the wheel metadata (at least with current
  # poetry-core versions), so we install with poetry.
  - uses: matrix-org/setup-python-poetry@v1
  with:
  python-version: "3.x"
- poetry-version: "1.2.0b1"
+ poetry-version: "1.2.0"
  extras: "all"
  # Dump installed versions for debugging.
  - run: poetry run pip list > before.txt
@@ -53,6 +60,14 @@ jobs:
 
  steps:
  - uses: actions/checkout@v2
+
+ - name: Install Rust
+ uses: actions-rs/toolchain@v1
+ with:
+ toolchain: stable
+ override: true
+ - uses: Swatinem/rust-cache@v2
+
  - run: sudo apt-get -qq install xmlsec1
  - name: Set up PostgreSQL ${{ matrix.postgres-version }}
  if: ${{ matrix.postgres-version }}
@@ -187,4 +202,3 @@ jobs:
  with:
  update_existing: true
  filename: .ci/latest_deps_build_failed_issue_template.md
-

.github/workflows/twisted_trunk.yml

@@ -16,6 +16,14 @@ jobs:
 
  steps:
  - uses: actions/checkout@v2
+
+ - name: Install Rust
+ uses: actions-rs/toolchain@v1
+ with:
+ toolchain: stable
+ override: true
+ - uses: Swatinem/rust-cache@v2
+
  - uses: matrix-org/setup-python-poetry@v1
  with:
  python-version: "3.x"
@@ -34,6 +42,14 @@ jobs:
  steps:
  - uses: actions/checkout@v2
  - run: sudo apt-get -qq install xmlsec1
+
+ - name: Install Rust
+ uses: actions-rs/toolchain@v1
+ with:
+ toolchain: stable
+ override: true
+ - uses: Swatinem/rust-cache@v2
+
  - uses: matrix-org/setup-python-poetry@v1
  with:
  python-version: "3.x"
@@ -66,6 +82,14 @@ jobs:
 
  steps:
  - uses: actions/checkout@v2
+
+ - name: Install Rust
+ uses: actions-rs/toolchain@v1
+ with:
+ toolchain: stable
+ override: true
+ - uses: Swatinem/rust-cache@v2
+
  - name: Patch dependencies
  # Note: The poetry commands want to create a virtualenv in /src/.venv/,
  # but the sytest-synapse container expects it to be in /venv/.

changelog.d/13734.misc

@@ -0,0 +1 @@
+Add a stub Rust crate.