error[E0282]: type annotations needed
  --> $DIR/channel.rs:8:9
   |
LL |         channel();
   |         ^^^^^^^ cannot infer type of the type parameter `T` declared on the function `channel`
   |
help: consider specifying the generic argument
   |
LL |         channel::<T>();
   |                +++++

error[E0282]: type annotations needed
  --> $DIR/channel.rs:13:9
   |
LL |         channel();
   |         ^^^^^^^ cannot infer type of the type parameter `T` declared on the function `channel`
   |
help: consider specifying the generic argument
   |
LL |         channel::<T>();
   |                +++++

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0282`.