Updates for Rust 1.94.1

.github/actions/rustup/action.yml

@@ -0,0 +1,55 @@
+name: rustup toolchain install
+description: Install the Rust toolchain
+
+inputs:
+  toolchain:
+    description: 'Identifier of the rust toolchain to install'
+    required: false
+    default: 'stable'
+    type: string
+  targets:
+    description: 'Rust compiler targets to install, as a space-delimited list'
+    required: false
+    default: ''
+    type: string
+  components:
+    description: 'List of components to install via rustup, as a space-delimited list'
+    required: false
+    default: ''
+    type: string
+
+runs:
+  using: composite
+  steps:
+    - run: |
+        if ! command -v rustup &>/dev/null; then
+          curl --proto '=https' --tlsv1.2 --retry 10 --retry-connrefused -fsSL "https://sh.rustup.rs" | sh -s -- -y
+          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+        fi
+      shell: bash
+
+    - run: rustup override unset
+      shell: bash
+
+    - run: rustup default ${{ inputs.toolchain }}
+      shell: bash
+
+    - if: ${{ inputs.targets != '' }}
+      run: rustup target add ${{ inputs.targets }}
+      shell: bash
+
+    - if: ${{ inputs.components != '' }}
+      run: rustup component add ${{ inputs.components }}
+      shell: bash
+
+    - run: |
+        echo "CARGO_NET_RETRY=10" >> $GITHUB_ENV
+        echo "CARGO_TERM_COLOR=always" >> $GITHUB_ENV
+        echo "RUSTUP_MAX_RETRIES=10" >> $GITHUB_ENV
+      shell: bash
+
+    - run: rustup show active-toolchain || rustup toolchain install
+      shell: bash
+
+    - run: rustc --version --verbose
+      shell: bash

.github/containers/release/Dockerfile

@@ -0,0 +1,40 @@
+FROM ubuntu:22.04 as base
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt update && \
+    apt -y install \
+        build-essential \
+        cmake \
+        curl \
+        git \
+        libssl-dev \
+        ninja-build \
+        pkg-config \
+        python3 \
+        zlib1g-dev
+
+RUN curl -sSf https://sh.rustup.rs | sh -s -- -y
+ENV PATH="/root/.cargo/bin:${PATH}"
+ENV RISC0_HOME="/risc0"
+
+WORKDIR /src
+
+FROM base AS builder
+COPY . .
+
+RUN ls -al rust/.git
+
+WORKDIR /src/risc0
+RUN --mount=type=cache,id=release,target=/root/.cache \
+  --mount=type=cache,id=release,target=/root/.cargo,from=base,source=/root/.cargo \
+  cargo build --bin rzup
+
+RUN mkdir -p /risc0
+
+RUN --mount=type=cache,id=release,target=/root/.cache \
+  --mount=type=cache,id=release,target=/root/.cargo,from=base,source=/root/.cargo \
+  target/debug/rzup build rust --path /src/rust
+
+FROM scratch AS export
+COPY --from=builder /risc0/toolchains/ /