$ perlcritic `perldoc -l Time::HiRes` Package variable declared or used at line 4, column 1. See pages 73,75 of PBP. Deprecated 'require' statement used at line 6, column 1. Use 'use' pragma instead Deprecated 'require' statement used at line 7, column 1. Use 'use' pragma instead Code before warnings are enabled at line 9, column 1. See page 431 of PBP. String form of 'eval' at line 20, column 12. See page 161 of PBP. Useless interpolation of literal string at line 25, column 9. See page 51 of PBP. Postfix control 'if' used at line 25, column 46. See pages 93,94 of PBP. Postfix control 'unless' used at line 42, column 27. See pages 96,97 of PBP. Builtin function called with parens at line 42, column 34. See page 13 of PBP.