Because of this issue: https://github.com/squizlabs/PHP_CodeSniffer/issues/2142#issuecomment-476140225 Rollback to nexylan/coding-standard 0.0 for now and wait for a fix.
Because of this issue: squizlabs/PHP_CodeSniffer#2142 (comment)
Rollback to nexylan/coding-standard 0.0 for now and wait for a fix.