overflow evaluating the requirement

[sackery]

let query = diesel::sql_query("SELECT * FROM users WHERE name = ?");
match query.bind::<Text, _>(uid).first::<User>(&*self.db) {
}

error[E0275]: overflow evaluating the requirement `<diesel::query_builder::sql_query::UncheckedBind<diesel::query_builder::SqlQuery, std::string::String, diesel::sql_types::Text> as diesel::query_dsl::limit_dsl::LimitDsl>::Output`
  --> src/vokator/main.rs:99:62
   |
99 |                             match query.bind::<Text, _>(uid).first::<User>(&*self.db) {
   |                                                              ^^^^^

[weiznich]

Using first with sql_query is not possible, because we could not know if the query already contains a limit clause.
The error message is quite bad, but there is not much we could do about this. (For some reason Rustc simply fails to see that LimitDsl is not implemented for some type. )