heptapod-ci: also run the dedicated rust test for the rust code

The Rust code has various standard rust test that are fast to run. So let's run them.

Differential Revision: https://phab.mercurial-scm.org/D8014

contrib/heptapod-ci.yml

@@ -1,25 +1,35 b''
 image: octobus/ci-mercurial-core
 
 # The runner made a clone as root.
 # We make a new clone owned by user used to run the step.
 before_script:
     - hg clone . /tmp/mercurial-ci/ --noupdate
     - hg -R /tmp/mercurial-ci/ update `hg log --rev '.' --template '{node}'`
     - cd /tmp/mercurial-ci/
 
 variables:
     PYTHON: python
 
 .runtests_template: &runtests
     script:
         - cd tests/
         - echo "python used, $PYTHON"
         - $PYTHON run-tests.py --color=always --time test-check-*.*
 
 checks-py2:
     <<: *runtests
 
 checks-py3:
     <<: *runtests
     variables:
         PYTHON: python3
+
+rust-cargo-test-py2: &rust_cargo_test
+    script:
+        - echo "python used, $PYTHON"
+        - make rust-tests
+
+rust-cargo-test-py3:
+    <<: *rust_cargo_test
+    variables:
+        PYTHON: python3