.github/: Install protoc

Author: mxinden

.github/workflows/rust.yml

@@ -7,6 +7,8 @@ jobs:
     name: Check
     runs-on: ubuntu-latest
     steps:
+      - name: Install Protoc
+        uses: arduino/setup-protoc@v1
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
@@ -45,6 +47,8 @@ jobs:
     name: Test Suite
     runs-on: ubuntu-latest
     steps:
+      - name: Install Protoc
+        uses: arduino/setup-protoc@v1
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
@@ -79,6 +83,8 @@ jobs:
     name: Rustfmt
     runs-on: ubuntu-latest
     steps:
+      - name: Install Protoc
+        uses: arduino/setup-protoc@v1
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
@@ -95,6 +101,8 @@ jobs:
     name: Clippy
     runs-on: ubuntu-latest
     steps:
+      - name: Install Protoc
+        uses: arduino/setup-protoc@v1
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
@@ -124,6 +132,8 @@ jobs:
     name: Check rustdoc intra-doc links
     runs-on: ubuntu-latest
     steps:
+      - name: Install Protoc
+        uses: arduino/setup-protoc@v1
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
@@ -149,6 +159,8 @@ jobs:
           - powerpc64-unknown-linux-gnu
           - wasm32-unknown-unknown
     steps:
+      - name: Install Protoc
+        uses: arduino/setup-protoc@v1
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with: