Ignore like `// coverage:ignore-start` does not work

[fzyzcjy]

Ignore like `// coverage:ignore-start` does not work

[fzyzcjy]

After checking the source code: Need to add --check-ignore

(base) ➜  bug format_coverage --lcov --in=coverage --out=lcov.info --packages=.dart_tool/package_config.json --check-ignore
(base) ➜  bug cat lcov.info | grep -A20 -B20 lib/bug.dart                                                                  
SF:/Users/tom/temp/bug/test/bug_test.dart
DA:4,1
DA:5,2
DA:6,2
LF:3
LH:3
end_of_record
SF:/Users/tom/temp/bug/lib/bug.dart
DA:1,1
DA:2,1
LF:2
LH:2
end_of_record
SF:/Users/tom/.pub-cache/hosted/pub.dev/test_core-0.6.0/lib/src/bootstrap/vm.dart
DA:16,1
DA:18,2
DA:19,1
DA:20,2
DA:21,3
DA:23,2
DA:24,0
DA:25,0
DA:26,0
DA:32,0
DA:34,0
DA:35,0
DA:36,0
DA:38,0