trying to fix coverage

.gitlab-ci.yml

@@ -101,26 +101,24 @@ test:
     - cargo test --all
 
 coverage:
-  image: 'rustlang/rust:nightly-bullseye'
-  stage: test
-  extends: .common
-  needs:
-    - job: check
-      artifacts: false
+  image: "rustdocker/rust:nightly"
+  stage: extras
   variables:
     RUSTFLAGS: "-Zinstrument-coverage"
     LLVM_PROFILE_FILE: "coverage-%p-%m.profraw"
-  before_script:
-    - rustup component add llvm-tools-preview
-    - curl -L https://github.com/mozilla/grcov/releases/latest/download/grcov-x86_64-unknown-linux-gnu.tar.bz2 | tar jxf -
   script:
-    - cargo +nightly test
-    - ./grcov . --binary-path ./target/debug/ -s . -t cobertura --branch --ignore-not-existing --ignore "*cargo*" -o coverage.xml
-    - grep -Eo 'line-rate="[^"]+"' coverage.xml | head -n 1 | grep -Eo '[0-9.]+' | awk '{ print "Coverage:", $1 * 100 }'
-  coverage: '/Coverage: \d+\.\d+/'
+    - rustup component add llvm-tools-preview
+    - cargo test
+    # generate html report
+    - cargo install grcov
+    - grcov . --binary-path ./target/debug/ -s . -t html --branch --ignore-not-existing --ignore "*cargo*" -o ./coverage/
+    # generate cobertura report for gitlab integration
+    - pip3 install lcov_cobertura
+    - grcov . --binary-path ./target/debug/ -s . -t lcov --branch --ignore-not-existing --ignore "*cargo*" -o coverage.lcov
+    - python3 /usr/local/lib/python3.5/dist-packages/lcov_cobertura.py coverage.lcov
   artifacts:
-    name: ${CI_JOB_NAME}-${CI_COMMIT_REF_NAME}-${CI_COMMIT_SHA}
-    expire_in: 2 days
     reports:
-      cobertura: coverage.xml
-
+      coverage_report:
+        coverage_format: cobertura
+        path: cobertura.xml
+  coverage: '/^\d+.\d+% coverage/'