Tests are not building

[0nkery]

Trying to run tests with nightly rustc 1.11.0-nightly (bb4a79b08 2016-06-15).

tests/test.rs:405:68: 405:68 error: mismatched types [E0308]
tests/test.rs:405     #[derive(RustcEncodable, RustcDecodable, Serialize, Deserialize, Debug)]
                                                                                     ^
tests/test.rs:405:57: 405:68 note: in this expansion of try! (defined in <std macros>)
tests/test.rs:405:57: 405:68 note: in this expansion of #[derive_Deserialize] (defined in tests/test.rs)
tests/test.rs:405:68: 405:68 help: run `rustc --explain E0308` to see a detailed explanation
tests/test.rs:405:68: 405:68 note: expected type `serde::Deserialize`
tests/test.rs:405:68: 405:68 note:    found type `serde::Deserialize`
tests/test.rs:405:57: 405:68 note: the lifetime 'a as defined on the block at 405:56...
tests/test.rs:405     #[derive(RustcEncodable, RustcDecodable, Serialize, Deserialize, Debug)]
                                                                          ^~~~~~~~~~~
tests/test.rs:405:68: 405:68 note: ...does not necessarily outlive the static lifetime

As far as I can tell this error points RefBox's lifetimes.

[TyOverby]

@0nkery @dtolnay @erickt: could this be a change in the Deserialize codegen? Could one of the serde maintainers tell us if there were any changes to codegen that would break us like this?

[TyOverby]

Until this is figured out, I'll be disabling the tests over in #78

[dtolnay]

So far I have narrowed it down to the following code does not compile:

#[derive(Deserialize)]
struct Message<'a>(RefBox<'a, ()>);

Now I will start looking at the generated code to find the problem.

[dtolnay]

This failure was correct on Serde's part and a bug in bincode. The code was trying to derive Deserialize for a type containing RefBox<'a, _>, but that does not implement Deserialize because only RefBox<'static, _> implements Deserialize. I have a fix in #79.