try fix failing codecov with tarpaulin

Author: geo-ant

.github/workflows/coverage.yml

@@ -22,7 +22,8 @@ jobs:
 
       - name:                   Generate code coverage
         run: |
-          cargo +nightly tarpaulin --force-clean --verbose --all-features --engine llvm --timeout 120 --out Lcov
+          cargo tarpaulin --force-clean --verbose --all-features --engine llvm --timeout 120 --out Lcov
+          # cargo +nightly tarpaulin --force-clean --verbose --all-features --engine llvm --timeout 120 --out Lcov
 
       - name: upload to Coveralls
         uses: coverallsapp/github-action@master

.gitignore

@@ -19,3 +19,5 @@ Cargo.lock
 
 # ide folders
 .idea/
+
+lcov.info