#[insertable_into] fails with lifetimes other than 'a or 'insert

[TimNN]

The following code fails to compile unless the 'b lifetime is changed to 'a or 'insert:

#![feature(custom_attribute, plugin)]
#![plugin(diesel_codegen)]

#[macro_use]
extern crate diesel;

table! {
    foo {
        id -> Integer,
        s -> VarChar,
    }
}

#[insertable_into(foo)]
pub struct Bar<'b> {
    pub s: &'b str,
}

I believe that this code only works with 'a because as far as I know lifetimes are exempt from macro hygiene.

[sgrif]

Fixed in 4771cb6