Can't derive on structs containing Vec<T>

[alecmocatta]

This example fails:

use speedy::{Readable, Writable};

#[derive(Readable, Writable)]
struct Wrap<T>(Vec<T>);

with:

error[E0277]: the trait bound `T: Readable<'a_, C_>` is not satisfied
 --> common/src/lib.rs:8:10
  |
8 | #[derive(Readable, Writable)]
  |          ^^^^^^^^ the trait `Readable<'a_, C_>` is not implemented for `T`
  |
  = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider further restricting type parameter `T`
  |
8 | #[derive(Readable, T: Readable<'a_, C_>, Writable)]
  |                  ^^^^^^^^^^^^^^^^^^^^^^

error[E0277]: the trait bound `T: Writable<C_>` is not satisfied
 --> common/src/lib.rs:8:20
  |
8 | #[derive(Readable, Writable)]
  |                    ^^^^^^^^ the trait `Writable<C_>` is not implemented for `T`
  |
  = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider further restricting type parameter `T`
  |
8 | #[derive(Readable, Writable, T: Writable<C_>)]
  |                            ^^^^^^^^^^^^^^^^^

The expanded code looks fine, I think this is a Rust issue. rust-lang/rust#20671 and rust-lang/rust#44491 look relevant.

I've worked around this by manually impling these traits. A nicer solution might be enabling a bound attribute, akin to serde's?

[koute]

Thanks. Should be fixed in 0.7.1.

[alecmocatta]

Confirmed. Thanks for the useful project and swift fix @koute!