message: Dockerfile: Sync Rust version
diff: @@ -5,7 +5,7 @@ ENV RUSTUP_HOME=/usr/local/rustup \
  CARGO_HOME=/usr/local/cargo \
  PATH=/usr/local/cargo/bin:$PATH \
  # Manually sync this with rust-toolchain.toml!
  - RUST_VERSION=nightly-2021-12-04 \
  + RUST_VERSION=nightly-2022-01-30 \
  RUST_COMPONENTS="clippy llvm-tools-preview rustfmt rust-src"
  RUN set -eux; \
  