:errors - print 1 semantic errors.
:warnings - print 2206 semantic warnings.

While compiling directory.: 

Nesting:
{ if-iterate? if-iterate? }
{ (each-integer) ~inline-recursive~ }
{ each-integer each-integer }
{ each each }
{ assoc-each assoc-each }
{ ~literal~ f }
{ ~literal~ f }
{ directory. directory. }
Unbalanced branches:
[ iterate-step iterate-next (each-integer) ] ( -- object )
[ 3drop ] ( -- )
Bootstrap completed in 9 minutes and 29 seconds.
15569 compiled words
1323 symbol words
17674 words total
Bootstrapping is complete.