Code checks, as well as documentation generation, are not yet tied
to "make check" because they need new version of the Rust toolchain
(even nightly in the case of "rustfmt").  Run them in CI using the
existing nightly-Rust container.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 .gitlab-ci.d/static_checks.yml                | 23 +++++++++++++++++++
 .../dockerfiles/fedora-rust-nightly.docker    |  4 ++++
 tests/lcitool/refresh                         |  4 ++++
 3 files changed, 31 insertions(+)

diff --git a/.gitlab-ci.d/static_checks.yml b/.gitlab-ci.d/static_checks.yml
index ad9f426a52f..f6f22875265 100644
--- a/.gitlab-ci.d/static_checks.yml
+++ b/.gitlab-ci.d/static_checks.yml
@@ -46,3 +46,26 @@ check-python-tox:
     QEMU_JOB_OPTIONAL: 1
   needs:
     job: python-container
+
+check-rust-tools-nightly:
+  extends: .base_job_template
+  stage: test
+  image: $CI_REGISTRY_IMAGE/qemu/fedora-rust-nightly:$QEMU_CI_CONTAINER_TAG
+  script:
+    - source scripts/ci/gitlab-ci-section
+    - section_start test "Running Rust code checks"
+    - cd build
+    - pyvenv/bin/meson devenv -w ../rust ${CARGO-cargo} fmt --check
+    - make clippy
+    - make rustdoc
+    - section_end test
+  variables:
+    GIT_DEPTH: 1
+  needs:
+    - job: build-system-fedora-rust-nightly
+      artifacts: true
+  artifacts:
+    when: on_success
+    expire_in: 2 days
+    paths:
+      - rust/target/doc
diff --git a/tests/docker/dockerfiles/fedora-rust-nightly.docker b/tests/docker/dockerfiles/fedora-rust-nightly.docker
index 9180c8b5222..a8e4fb279a7 100644
--- a/tests/docker/dockerfiles/fedora-rust-nightly.docker
+++ b/tests/docker/dockerfiles/fedora-rust-nightly.docker
@@ -155,6 +155,7 @@ ENV PYTHON "/usr/bin/python3"
 RUN dnf install -y wget
 ENV RUSTUP_HOME=/usr/local/rustup CARGO_HOME=/usr/local/cargo
 ENV RUSTC=/usr/local/rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/rustc
+ENV CARGO=/usr/local/rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/cargo
 RUN set -eux && \
   rustArch='x86_64-unknown-linux-gnu' && \
   rustupSha256='6aeece6993e902708983b209d04c0d1dbb14ebb405ddb87def578d41f920f56d' && \
@@ -165,10 +166,13 @@ RUN set -eux && \
   ./rustup-init -y --no-modify-path --profile default --default-toolchain nightly --default-host ${rustArch} && \
   chmod -R a+w $RUSTUP_HOME $CARGO_HOME && \
   /usr/local/cargo/bin/rustup --version && \
+  /usr/local/cargo/bin/rustup run nightly cargo --version && \
   /usr/local/cargo/bin/rustup run nightly rustc --version && \
+  test "$CARGO" = "$(/usr/local/cargo/bin/rustup +nightly which cargo)" && \
   test "$RUSTC" = "$(/usr/local/cargo/bin/rustup +nightly which rustc)"
 ENV PATH=$CARGO_HOME/bin:$PATH
 RUN /usr/local/cargo/bin/rustup run nightly cargo install bindgen-cli
+RUN $CARGO --list
 # As a final step configure the user (if env is defined)
 ARG USER
 ARG UID
diff --git a/tests/lcitool/refresh b/tests/lcitool/refresh
index 51012783c0f..6720516b942 100755
--- a/tests/lcitool/refresh
+++ b/tests/lcitool/refresh
@@ -121,6 +121,7 @@ fedora_rustup_nightly_extras = [
     "RUN dnf install -y wget\n",
     "ENV RUSTUP_HOME=/usr/local/rustup CARGO_HOME=/usr/local/cargo\n",
     "ENV RUSTC=/usr/local/rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/rustc\n",
+    "ENV CARGO=/usr/local/rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/cargo\n",
     "RUN set -eux && \\\n",
     "  rustArch='x86_64-unknown-linux-gnu' && \\\n",
     "  rustupSha256='6aeece6993e902708983b209d04c0d1dbb14ebb405ddb87def578d41f920f56d' && \\\n",
@@ -131,10 +132,13 @@ fedora_rustup_nightly_extras = [
     "  ./rustup-init -y --no-modify-path --profile default --default-toolchain nightly --default-host ${rustArch} && \\\n",
     "  chmod -R a+w $RUSTUP_HOME $CARGO_HOME && \\\n",
     "  /usr/local/cargo/bin/rustup --version && \\\n",
+    "  /usr/local/cargo/bin/rustup run nightly cargo --version && \\\n",
     "  /usr/local/cargo/bin/rustup run nightly rustc --version && \\\n",
+    '  test "$CARGO" = "$(/usr/local/cargo/bin/rustup +nightly which cargo)" && \\\n',
     '  test "$RUSTC" = "$(/usr/local/cargo/bin/rustup +nightly which rustc)"\n',
     'ENV PATH=$CARGO_HOME/bin:$PATH\n',
     'RUN /usr/local/cargo/bin/rustup run nightly cargo install bindgen-cli\n',
+    'RUN $CARGO --list\n',
 ]
 
 ubuntu2204_bindgen_extras = [
-- 
2.47.0