Lifetime issue with Replacer

[ArtemGr]

Trying to compile the following code

  struct TrReplace;
  impl Replacer for TrReplace {
    fn reg_replace<'a> (&'a mut self, caps: &Captures) -> Cow<'a, str> {
      let text = caps.at (0) .expect ("!caps 0");
      Cow::Borrowed (text)
    }
  }

with regex 0.1.58 and rustc 1.9.0-nightly (6e0f2f2f0 2016-03-16) I get the following error:

by_user.rs:1328:27: 1328:29 error: cannot infer an appropriate lifetime for lifetime parameter `'t` due to conflicting requirements [E0495]
by_user.rs:1328           let text = caps.at (0) .expect ("!caps 0");
                                                                   ^~
by_user.rs:1327:9: 1330:10 help: consider using an explicit lifetime parameter as shown: fn reg_replace<'a>(&'a mut self, caps: &Captures<'a>) -> Cow<'a, str>
by_user.rs:1327         fn reg_replace<'a> (&'a mut self, caps: &Captures) -> Cow<'a, str> {
by_user.rs:1328           let text = caps.at (0) .expect ("!caps 0");
by_user.rs:1329           Cow::Borrowed (text)
by_user.rs:1330         }
error: aborting due to previous error

I think returning an unmodified string from reg_replace is supposed to work, isn't it?

[BurntSushi]

I think this is a dupe of #151. See my comment here: #151 (comment) --- Note that this is fixed for the bytes::Regex API and will also be fixed when 1.0 is out.

If you're stuck, then I think the best work-around is to probably copy the Replacer trait and the replace methods that use it from the 1.0 branch:

[ArtemGr]

Indeed, somehow I missed the #151, thanks.