need Self: Sized (RFC 1214)

[durka]

There is a warning (which will be eventually be an error) when compiling on nightly:

src/lib.rs:53:3: 53:48 warning: the trait `core::marker::Sized` is not implemented for the type `Self` [E0277]
src/lib.rs:53   fn new(Sender<Event>) -> Result<Self, Error>;
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/lib.rs:53:3: 53:48 help: run `rustc --explain E0277` to see a detailed explanation
src/lib.rs:53:3: 53:48 note: `Self` does not have a constant size known at compile-time
src/lib.rs:53   fn new(Sender<Event>) -> Result<Self, Error>;
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/lib.rs:53:3: 53:48 note: this warning results from recent bug fixes and clarifications; it will become a HARD ERROR in the next release. See RFC 1214 for details.
src/lib.rs:53   fn new(Sender<Event>) -> Result<Self, Error>;
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/lib.rs:53:3: 53:48 note: required by `core::result::Result`
src/lib.rs:53   fn new(Sender<Event>) -> Result<Self, Error>;
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[blaenk]

We can probably just fix this by adding a Self bound to Watcher, i.e. trait Watcher: Self. It's only ever going to be implemented for sized types, AFAIK.

[durka]

Seems to work. I will send a PR.