CI/CD: Use private cache of (third-party) GitHub Actions.

This is a step towards implementing the GitHub security hardening advice.

sed -ri 's|(uses: +)([^/]+)/([^@])|\1briansmith/\2-\3|g' .github/workflows/ci.yml

Author: briansmith

.github/workflows/ci.yml

@@ -9,12 +9,12 @@ jobs:
     runs-on: ubuntu-18.04
 
     steps:
-      - uses: actions-rs/toolchain@v1
+      - uses: briansmith/actions-rs-toolchain@v1
         with:
           toolchain: stable
           profile: minimal
           components: rustfmt
-      - uses: actions/checkout@v2
+      - uses: briansmith/actions-checkout@v2
         with:
           persist-credentials: false
       - run: cargo fmt --all -- --check
@@ -23,13 +23,13 @@ jobs:
     runs-on: ubuntu-18.04
 
     steps:
-      - uses: actions-rs/toolchain@v1
+      - uses: briansmith/actions-rs-toolchain@v1
         with:
           toolchain: stable
           profile: minimal
           components: clippy
 
-      - uses: actions/checkout@v2
+      - uses: briansmith/actions-checkout@v2
         with:
           persist-credentials: false
 
@@ -39,12 +39,12 @@ jobs:
     runs-on: ubuntu-18.04
 
     steps:
-      - uses: actions-rs/toolchain@v1
+      - uses: briansmith/actions-rs-toolchain@v1
         with:
           toolchain: stable
           profile: minimal
 
-      - uses: actions/cache@v2
+      - uses: briansmith/actions-cache@v2
         with:
           path: |
             ~/.cargo/bin/cargo-audit
@@ -54,7 +54,7 @@ jobs:
 
       - run: cargo install cargo-audit --vers "0.13.1"
 
-      - uses: actions/checkout@v2
+      - uses: briansmith/actions-checkout@v2
         with:
           persist-credentials: false
 
@@ -66,12 +66,12 @@ jobs:
     runs-on: ubuntu-18.04
 
     steps:
-      - uses: actions-rs/toolchain@v1
+      - uses: briansmith/actions-rs-toolchain@v1
         with:
           toolchain: stable
           profile: minimal
 
-      - uses: actions/cache@v2
+      - uses: briansmith/actions-cache@v2
         with:
           path: |
             ~/.cargo/bin/cargo-deny
@@ -81,7 +81,7 @@ jobs:
 
       - run: cargo install cargo-deny --vers "0.8.4"
 
-      - uses: actions/checkout@v2
+      - uses: briansmith/actions-checkout@v2
         with:
           persist-credentials: false
 
@@ -102,13 +102,13 @@ jobs:
           - target: x86_64-unknown-linux-gnu
 
     steps:
-      - uses: actions-rs/toolchain@v1
+      - uses: briansmith/actions-rs-toolchain@v1
         with:
           override: true
           target: ${{ matrix.target }}
           toolchain: ${{ matrix.rust_channel }}
 
-      - uses: actions/checkout@v2
+      - uses: briansmith/actions-checkout@v2
         with:
           persist-credentials: false
 
@@ -145,11 +145,11 @@ jobs:
             host_os: ubuntu-18.04
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: briansmith/actions-checkout@v2
         with:
           persist-credentials: false
 
-      - uses: actions-rs/toolchain@v1
+      - uses: briansmith/actions-rs-toolchain@v1
         with:
           override: true
           target: ${{ matrix.target }}
@@ -185,14 +185,14 @@ jobs:
       - if: ${{ contains(matrix.host_os, 'ubuntu') }}
         run: sudo apt-get update -y
 
-      - uses: actions/checkout@v2
+      - uses: briansmith/actions-checkout@v2
         with:
           persist-credentials: false
 
       - if: ${{ !contains(matrix.host_os, 'windows') }}
         run: RING_COVERAGE=1 mk/install-build-tools.sh --target=${{ matrix.target }} ${{ matrix.features }}
 
-      - uses: actions-rs/toolchain@v1
+      - uses: briansmith/actions-rs-toolchain@v1
         with:
           override: true
           target: ${{ matrix.target }}
@@ -205,7 +205,7 @@ jobs:
         run: |
           RING_COVERAGE=1 mk/cargo.sh +${{ matrix.rust_channel }} test -vv --target=${{ matrix.target }} ${{ matrix.cargo_options }} ${{ matrix.features }} ${{ matrix.mode }}
 
-      - uses: codecov/codecov-action@v1
+      - uses: briansmith/codecov-codecov-action@v1
         with:
           directory: ./target/${{ matrix.target }}/debug/coverage/reports
           fail_ci_if_error: true