ci: Slim down lint image

Currently, the lint_test_runner is built and installed into the lint CI
image. This is problematic, because it triggers a full image build on
every change to its source code. Doing a build of the lint test_runner
on every run is easier and faster.

ci/lint/04_install.sh

@@ -12,10 +12,11 @@ pushd "/"
 
 ${CI_RETRY_EXE} apt-get update
 # Lint dependencies:
+# - cargo (used to run the lint tests)
 # - curl/xz-utils (to install shellcheck)
 # - git (used in many lint scripts)
 # - gpg (used by verify-commits)
-${CI_RETRY_EXE} apt-get install -y curl xz-utils git gpg
+${CI_RETRY_EXE} apt-get install -y cargo curl xz-utils git gpg
 
 PYTHON_PATH="/python_build"
 if [ ! -d "${PYTHON_PATH}/bin" ]; then
@@ -35,17 +36,6 @@ export PATH="${PYTHON_PATH}/bin:${PATH}"
 command -v python3
 python3 --version
 
-export LINT_RUNNER_PATH="/lint_test_runner"
-if [ ! -d "${LINT_RUNNER_PATH}" ]; then
-  ${CI_RETRY_EXE} apt-get install -y cargo
-  (
-    cd "/test/lint/test_runner" || exit 1
-    cargo build
-    mkdir -p "${LINT_RUNNER_PATH}"
-    mv target/debug/test_runner "${LINT_RUNNER_PATH}"
-  )
-fi
-
 ${CI_RETRY_EXE} pip3 install \
   codespell==2.2.6 \
   lief==0.13.2 \

ci/lint/06_script.sh

@@ -16,7 +16,7 @@ if [ -n "$CIRRUS_PR" ]; then
   fi
 fi
 
-RUST_BACKTRACE=1 "${LINT_RUNNER_PATH}/test_runner"
+RUST_BACKTRACE=1 cargo run --manifest-path "./test/lint/test_runner/Cargo.toml"
 
 if [ "$CIRRUS_REPO_FULL_NAME" = "bitcoin/bitcoin" ] && [ "$CIRRUS_PR" = "" ] ; then
     # Sanity check only the last few commits to get notified of missing sigs,

ci/lint/container-entrypoint.sh

@@ -11,7 +11,6 @@ export LC_ALL=C
 git config --global --add safe.directory /bitcoin
 
 export PATH="/python_build/bin:${PATH}"
-export LINT_RUNNER_PATH="/lint_test_runner"
 
 if [ -z "$1" ]; then
   bash -ic "./ci/lint/06_script.sh"

ci/lint_imagefile

@@ -13,7 +13,6 @@ COPY ./ci/retry/retry /ci_retry
 COPY ./.python-version /.python-version
 COPY ./ci/lint/container-entrypoint.sh /entrypoint.sh
 COPY ./ci/lint/04_install.sh /install.sh
-COPY ./test/lint/test_runner /test/lint/test_runner
 
 RUN /install.sh && \
   echo 'alias lint="./ci/lint/06_script.sh"' >> ~/.bashrc && \

ci/lint_run.sh

@@ -9,5 +9,4 @@ set -o errexit -o pipefail -o xtrace
 
 # Only used in .cirrus.yml. Refer to test/lint/README.md on how to run locally.
 export PATH="/python_build/bin:${PATH}"
-export LINT_RUNNER_PATH="/lint_test_runner"
 ./ci/lint/06_script.sh