augment and before

Hello,

I've discovered something that I'm not sure is a bug or not.  It has to do with the interaction between augment/override and before/after/around.  The following code crashes with the error message "Cannot add an augment method if a local method is already present":


  package Derp;
  use Moose;
  sub run { inner(); }
  1;
  
  package Derp::Herp;
  use Moose;
  extends 'Derp';
  before run => sub { print "before+run()\n"; };
  augment run => sub { print "run()\n"; };
  1;
  
  Derp::Herp->run;


If you swap the 'before' and the 'augment', it works perfectly.  Is this expected behavior, or is this a bug?  If it's expected, would it be helpful if I were to write a paragraph about it for the CAVEATS section of Moose::Manual::MethodModifiers?  Thanks!

Cheers,
Fitz