Pin nightly to a specific date

.github/workflows/java.yml

@@ -16,11 +16,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Install nightly rust
+    - uses: actions/checkout@v2
+
+    - name: Install Rust
       uses: actions-rs/toolchain@v1
       with:
-        toolchain: nightly
-        override: true
         profile: minimal
 
     - name: Install Android toolchains
@@ -29,8 +29,6 @@ jobs:
     - name: Install NDK tool
       run: cargo install cargo-ndk
 
-    - uses: actions/checkout@v2
-
     - name: Build libsignal-client-java
       run: ./gradlew build
       working-directory: java

.github/workflows/rust.yml

@@ -16,14 +16,13 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Install nightly rust
+    - uses: actions/checkout@v2
+    - name: Install Rust
       uses: actions-rs/toolchain@v1
       with:
-        toolchain: nightly
         override: true
         profile: minimal
         components: rustfmt, clippy
-    - uses: actions/checkout@v2
     - name: Check for duplicate dependencies
       run: |
         DUPS=$(cargo tree -d -e normal)

.github/workflows/swift.yml

@@ -16,15 +16,13 @@ jobs:
     runs-on: macOS-latest
 
     steps:
-    - name: Install nightly rust
+    - uses: actions/checkout@v2
+
+    - name: Install Rust
       uses: actions-rs/toolchain@v1
       with:
-        toolchain: nightly
-        override: true
         profile: minimal
 
-    - uses: actions/checkout@v2
-
     - name: Build libsignal-ffi
       run: cargo build --verbose -p libsignal-ffi
 

java/Dockerfile

@@ -53,7 +53,9 @@ RUN    echo y | ./android-sdk/tools/bin/sdkmanager --sdk_root=${ANDROID_HOME} "p
     && ./android-sdk/tools/bin/sdkmanager --sdk_root=${ANDROID_HOME} "ndk;${NDK_VERSION}"
 
 # Rust setup...
-ARG RUST_TOOLCHAIN=nightly-2020-11-01
+
+# This should always match the version set in rust-toolchain
+ARG RUST_TOOLCHAIN=nightly-2020-11-09
 ARG RUSTUP_SHA=ad1f8b5199b3b9e231472ed7aa08d2e5d1d539198a15c5b1e53c746aad81d27b
 ARG CARGO_NDK_VERSION=1.0.0
 ENV PATH="/home/libsignal/.cargo/bin:${PATH}"
@@ -72,8 +74,6 @@ COPY   java/gradle gradle
 COPY   java/gradlew gradlew
 RUN    ./gradlew --version
 
-RUN    echo "${RUST_TOOLCHAIN}" > rust-toolchain
-
 # Convert ssh to https for git dependency access without a key.
 RUN    git config --global url."https://github".insteadOf ssh://git@github
 

rust-toolchain

@@ -1 +1 @@
-nightly
+nightly-2020-11-09