feat: update to Rust 1.96 (#2680)

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## Related issues
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## Type of Change
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- [ ] **Add** - New feature or capability
- [ ] **Change** - Changes in existing functionality
- [ ] **Fix** - Bug fixes
- [ ] **Remove** - Removed features or deprecated functionality
- [ ] **Internal** - Internal changes (refactoring, tests, docs, etc.)

## Breaking Changes
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- [ ] **This PR contains breaking changes**

## Testing
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- [ ] Unit tests added/updated
- [ ] Integration tests added/updated
- [ ] Manual testing performed
- [ ] No testing required (docs, internal refactor, etc.)

## Additional Notes
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Author: rwthompsonii

.github/actions/setup-mkosi-environment/action.yml

@@ -4,7 +4,7 @@ inputs:
   rust-version:
     description: 'Rust toolchain version to install'
     required: false
-    default: '1.90.0'
+    default: '1.96.0'
   arch:
     description: 'Target architecture (x86_64 or aarch64)'
     required: false

.github/workflows/build-boot-artifacts.yml

@@ -140,7 +140,7 @@ jobs:
         if: inputs.build_type == 'ephemeral'
         uses: ./.github/actions/setup-mkosi-environment
         with:
-          rust-version: '1.90.0'
+          rust-version: '1.96.0'
           arch: ${{ inputs.arch }}
 
       # Setup Docker for container-based builds

Makefile.toml

@@ -46,7 +46,7 @@ BUILD_CONTAINER_AARCH64_URL = { value = "urm.nvidia.com/swngc-ngcc-docker-local/
 #
 # Make sure to update the RUST_NIGHTLY variable in
 # dev/docker/Dockerfile.build-container-x86_64 if you change this.
-RUST_NIGHTLY = "nightly-2026-05-27"
+RUST_NIGHTLY = "nightly-2026-06-16"
 
 [tasks.book]
 workspace = false
@@ -203,7 +203,7 @@ echo "Image carbide-build-x86_64 built. Run: cargo make cargo-docker -- build -p
 
 [tasks.build-cargo-docker-image-minimal]
 category = "Build"
-description = "Build minimal Cargo Docker image (Rust 1.90 + protoc). Quick (~2-5 min). Required once before cargo-docker-minimal for workspace builds (e.g. carbide-rpc)."
+description = "Build minimal Cargo Docker image (Rust 1.96 + protoc). Quick (~2-5 min). Required once before cargo-docker-minimal for workspace builds (e.g. carbide-rpc)."
 workspace = false
 script = '''
 set -e
@@ -213,7 +213,7 @@ echo "Image carbide-build-minimal built. Run: cargo make cargo-docker-minimal --
 
 [tasks.build-pxe-build-container]
 category = "Build"
-description = "Build the PXE artifact build container image (Ubuntu 24.04 + Rust 1.90 + mkosi deps). Required once before pxe-docker-x86."
+description = "Build the PXE artifact build container image (Ubuntu 24.04 + Rust 1.96 + mkosi deps). Required once before pxe-docker-x86."
 workspace = false
 script = '''
 set -e
@@ -301,7 +301,7 @@ fi
 
 [tasks.cargo-docker-minimal]
 category = "Build"
-description = "Run Cargo in minimal Linux image (Rust 1.90 + protoc). Requires build-cargo-docker-image-minimal once (~2-5 min). For DB tests set DATABASE_URL (use host.docker.internal, not localhost). Runs as root and chowns /code afterward so target/ stays writable on macOS/Colima."
+description = "Run Cargo in minimal Linux image (Rust 1.96 + protoc). Requires build-cargo-docker-image-minimal once (~2-5 min). For DB tests set DATABASE_URL (use host.docker.internal, not localhost). Runs as root and chowns /code afterward so target/ stays writable on macOS/Colima."
 workspace = false
 dependencies = ["check-cargo-home-set"]
 script = '''

crates/bmc-proxy/src/setup.rs

@@ -89,7 +89,6 @@ pub fn dep_log_filter(env_filter: EnvFilter) -> EnvFilter {
 #[cfg(test)]
 mod tests {
     use carbide_test_support::value_scenarios;
-    use tracing_subscriber::prelude::*;
 
     use super::*;
 

crates/dpf/dev/Dockerfile.carbide-dpf-api-harness-glibc2.34

@@ -30,7 +30,7 @@ RUN apt-get update && \
     libssl-dev \
     ca-certificates \
     git \
-    && curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain 1.95.0 \
+    && curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain 1.96.0 \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 

dev/docker/Dockerfile.build-artifacts-container-aarch64

@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-FROM arm64v8/rust:1.95.0-slim-bullseye
+FROM arm64v8/rust:1.96.0-slim-bullseye
 
 # Set in gitlab-templates/scripts/build-push-container-image.sh
 ARG CI_COMMIT_SHORT_SHA

dev/docker/Dockerfile.build-artifacts-container-cross-aarch64

@@ -16,7 +16,7 @@
 # Note that the output container image needs to be able to produce artifacts
 # that are compatible with the DPU BFB, so for example the libc6 version can't
 # be greater than what we see in the BFB.
-FROM rust:1.95.0-bookworm
+FROM rust:1.96.0-bookworm
 
 RUN dpkg --add-architecture arm64 && \
     apt-get update && \

dev/docker/Dockerfile.build-artifacts-container-x86_64

@@ -26,7 +26,7 @@
 # - `docker push urm.nvidia.com/swngc-ngcc-docker-local/forge/carbide/x86-64/build-container:{OUTPUT_OF_GIT_DESCRIBE_HERE}`
 
 # This should match rust-toolchain.toml
-FROM rust:1.95.0-slim-bullseye
+FROM rust:1.96.0-slim-bullseye
 
 # Set in gitlab-templates/scripts/build-push-container-image.sh
 ARG CI_COMMIT_SHORT_SHA

dev/docker/Dockerfile.build-container-aarch64

@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-FROM arm64v8/rust:1.95.0-slim-bookworm
+FROM arm64v8/rust:1.96.0-slim-bookworm
 
 # Set in gitlab-templates/scripts/build-push-container-image.sh
 ARG CI_COMMIT_SHORT_SHA

dev/docker/Dockerfile.build-container-x86_64

@@ -16,12 +16,12 @@
 #
 
 # This should match rust-toolchain.toml
-FROM rust:1.95.0-slim-bookworm
+FROM rust:1.96.0-slim-bookworm
 
 # Set in gitlab-templates/scripts/build-push-container-image.sh
 ARG CI_COMMIT_SHORT_SHA
 ENV CI_COMMIT_SHORT_SHA $CI_COMMIT_SHORT_SHA
-ENV RUST_NIGHTLY nightly-2026-05-27
+ENV RUST_NIGHTLY nightly-2026-06-16
 
 # Change CACHEKEY to whatever so docker doesn't re-use the cache from before if you want apt to actually run.
 #