message: CI: restore old command as commented with tag FIXME.
diff: @@ -75,9 +75,15 @@ def testUbuntu() {
  sh 'cargo update'
  try {
  - sh 'RUST_TEST_THREADS=1 cargo test'
  + sh 'RUST_BACKTRACE=1 RUST_TEST_THREADS=1 cargo test'
  + /* TODO FIXME restore after xunit will be fixed
  + sh 'RUST_TEST_THREADS=1 cargo test-xunit'
  + */
  }
  finally {
  + /* TODO FIXME restore after xunit will be fixed
  + junit 'test-results.xml'
  + */
  }
  }
  }
  