regexp conflicts with string

[sailormo at tpts6.seed.net.tw]

Hello:

C:\dmd\bin\..\src\phobos\std\regexp.d(246): function std.regexp.find conflicts w
ith std.string.find at C:\dmd\bin\..\src\phobos\std\string.d(272)

Why?? why these two standard libraries would conflict with each other??
And how to solve it??

Thanks ^_^

And by the way, "template instance cannot resolve forward reference" what does
the message mean?? I use -v to compile, and it seems fine in semantic1 and 2,
but it fails in semantic3.