gistfile1.txt

trait impl
https://github.com/rrichardson/tokio-core/blob/master/src/net/mod.rs#L27-L41

trait impl that uses the above traits: 
https://github.com/rrichardson/tokio-core/blob/master/src/net/udp_stream.rs#L25 

to satisfy this trait: 
http://alexcrichton.com/futures-rs/futures/stream/trait.Stream.html  (specifically the poll function) 

errors: 

src/net/udp_stream.rs:25:21: 25:27 error: the trait bound `net::Buffer + Sized + 'static: std::marker::Sized` is not satisfied [E0277]
src/net/udp_stream.rs:25 impl<B: BufferPool> Stream for UdpStream<B> {
                                             ^~~~~~
src/net/udp_stream.rs:25:21: 25:27 help: run `rustc --explain E0277` to see a detailed explanation
src/net/udp_stream.rs:25:21: 25:27 note: `net::Buffer + Sized + 'static` does not have a constant size known at compile-time 
src/net/udp_stream.rs:25:21: 25:27 note: required because it appears within the type `(net::Buffer + Sized + 'static, std::net::SocketAddr)` 
src/net/udp_stream.rs:25:21: 25:27 note: required by `futures::stream::Stream` 
src/net/udp_stream.rs:26:5: 26:46 error: the trait `net::Buffer` cannot be made into an object [E0038]
src/net/udp_stream.rs:26     type Item = (Buffer + Sized, SocketAddr);
                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/net/udp_stream.rs:26:5: 26:46 help: run `rustc --explain E0038` to see a detailed explanation
src/net/udp_stream.rs:26:5: 26:46 note: the trait cannot require that `Self : Sized` 
src/net/udp_stream.rs:29:5: 43:6 error: the trait `net::Buffer` cannot be made into an object [E0038]
src/net/udp_stream.rs:29     fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
                             ^
src/net/udp_stream.rs:29:5: 43:6 help: run `rustc --explain E0038` to see a detailed explanation
src/net/udp_stream.rs:29:5: 43:6 note: the trait cannot require that `Self : Sized` 
src/net/udp_stream.rs:29:5: 43:6 error: the trait bound `net::Buffer + Sized + 'static: std::marker::Sized` is not satisfied [E0277]
src/net/udp_stream.rs:29     fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
                             ^
src/net/udp_stream.rs:29:5: 43:6 help: run `rustc --explain E0277` to see a detailed explanation
src/net/udp_stream.rs:29:5: 43:6 note: `net::Buffer + Sized + 'static` does not have a constant size known at compile-time 
src/net/udp_stream.rs:29:5: 43:6 note: required because it appears within the type `(net::Buffer + Sized + 'static, std::net::SocketAddr)` 
src/net/udp_stream.rs:29:5: 43:6 note: required by `std::option::Option` 
src/net/mod.rs:82:6: 82:16 error: the trait bound `net::VecBufferPool: net::Buffer` is not satisfied [E0277]
src/net/mod.rs:82 impl BufferPool for VecBufferPool {
                       ^~~~~~~~~~
src/net/mod.rs:82:6: 82:16 help: run `rustc --explain E0277` to see a detailed explanation
src/net/mod.rs:82:6: 82:16 note: required by `net::BufferPool`