anchor.diff:          await newBuildsSyncStage.call(syncConfigWithCoverage);
   
           verify(
  -          sourceClient.fetchCoverage(argThat(anyOf(builds))),
  +          sourceClient.fetchCoverage(argThat(isIn(builds))),
           ).called(equals(builds.length));
         },
       );
  
positive.code:       () async {
          whenFetchBuildsAfter().thenAnswer((_) => Future.value(builds));
          when(
            sourceClient.fetchCoverage(argThat(anyOf(builds))),
          ).thenAnswer((_) => Future.value(coverage));
  
          await newBuildsSyncStage.call(syncConfigWithCoverage);
  
negative.code:       () async {
          whenFetchBuildsAfter().thenAnswer((_) => Future.value(builds));
          when(
            sourceClient.fetchCoverage(argThat(isIn(builds))),
          ).thenAnswer((_) => Future.error(error));
  
          await newBuildsSyncStage.call(syncConfigWithCoverage);
  