Here is the command to fix phpcs issue:-
phpcs --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,js,info,txt,md,yml web/modules/contrib/structure_sync/
FILE: /home/chandansha/docker/testd10/web/modules/contrib/structure_sync/README.md
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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4 | WARNING | Line exceeds 80 characters; contains 82 characters
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FILE: /home/chandansha/docker/testd10/web/modules/contrib/structure_sync/structure_sync.info.yml
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FOUND 0 ERRORS AND 3 WARNINGS AFFECTING 1 LINE
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1 | WARNING | Remove "project" from the info file, it will be added by drupal.org packaging automatically
1 | WARNING | Remove "datestamp" from the info file, it will be added by drupal.org packaging automatically
1 | WARNING | Remove "version" from the info file, it will be added by drupal.org packaging automatically
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Time: 611ms; Memory: 14MB
Fixed the coding standards.
Closed: cannot reproduce
2.0
Code
It involves compliance with, or the content of coding standards. Requires broad community agreement.
I don't see any issues reported by PHPCS in the pipeline run yesterday: https://git.drupalcode.org/project/structure_sync/-/jobs/1160448 - I suspect you're checking against an older version of the coding standards.