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Compile fails on latest nightly rust 1.28.0 #1730

@aario

Description

@aario

Setup

Versions

  • Rust: 1.28.0-nightly (29ffe51e3 2018-05-23)
  • Diesel: v1.3.0
  • Database: N/A
  • Operating System Debian 8

Feature Flags

  • diesel: N/A

Problem Description

Compile fails:

error[E0277]: the trait bound `<expression::count::CountStar as expression::Expression>::SqlType: sql_types::ops::Add` is not satisfied
  --> /home/aario/.cargo/registry/src/github.com-1ecc6299db9ec823/diesel-1.3.0/src/expression/count.rs:58:39
   |
58 | #[derive(Debug, Clone, Copy, QueryId, DieselNumericOps)]
   |                                       ^^^^^^^^^^^^^^^^ the trait `sql_types::ops::Add` is not implemented for `<expression::count::CountStar as expression::Expression>::SqlType`
   |
   = help: consider adding a `where <expression::count::CountStar as expression::Expression>::SqlType: sql_types::ops::Add` bound
   = help: see issue #48214
   = help: add #![feature(trivial_bounds)] to the crate attributes to enable

What are you trying to accomplish?

Compile.

What is the expected output?

Compile.

What is the actual output?

Error as in above.

Are you seeing any additional errors?

error[E0277]: the trait bound `<expression::count::CountStar as expression::Expression>::SqlType: sql_types::ops::Sub` is not satisfied
  --> /home/aario/.cargo/registry/src/github.com-1ecc6299db9ec823/diesel-1.3.0/src/expression/count.rs:58:39
   |
58 | #[derive(Debug, Clone, Copy, QueryId, DieselNumericOps)]
   |                                       ^^^^^^^^^^^^^^^^ the trait `sql_types::ops::Sub` is not implemented for `<expression::count::CountStar as expression::Expression>::SqlType`
   |
   = help: consider adding a `where <expression::count::CountStar as expression::Expression>::SqlType: sql_types::ops::Sub` bound
   = help: see issue #48214
   = help: add #![feature(trivial_bounds)] to the crate attributes to enable

error[E0277]: the trait bound `<expression::count::CountStar as expression::Expression>::SqlType: sql_types::ops::Mul` is not satisfied
  --> /home/aario/.cargo/registry/src/github.com-1ecc6299db9ec823/diesel-1.3.0/src/expression/count.rs:58:39
   |
58 | #[derive(Debug, Clone, Copy, QueryId, DieselNumericOps)]
   |                                       ^^^^^^^^^^^^^^^^ the trait `sql_types::ops::Mul` is not implemented for `<expression::count::CountStar as expression::Expression>::SqlType`
   |
   = help: consider adding a `where <expression::count::CountStar as expression::Expression>::SqlType: sql_types::ops::Mul` bound
   = help: see issue #48214
   = help: add #![feature(trivial_bounds)] to the crate attributes to enable

error[E0277]: the trait bound `<expression::count::CountStar as expression::Expression>::SqlType: sql_types::ops::Div` is not satisfied
  --> /home/aario/.cargo/registry/src/github.com-1ecc6299db9ec823/diesel-1.3.0/src/expression/count.rs:58:39
   |
58 | #[derive(Debug, Clone, Copy, QueryId, DieselNumericOps)]
   |                                       ^^^^^^^^^^^^^^^^ the trait `sql_types::ops::Div` is not implemented for `<expression::count::CountStar as expression::Expression>::SqlType`
   |
   = help: consider adding a `where <expression::count::CountStar as expression::Expression>::SqlType: sql_types::ops::Div` bound
   = help: see issue #48214
   = help: add #![feature(trivial_bounds)] to the crate attributes to enable

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0277`.
error: Could not compile `diesel`.

Steps to reproduce

rustup --default-toolchain nightly
# try to build any cargo that needs diesel 1.3.0

I tried to compile this:
https://github.com/sean3z/rocket-diesel-rest-api-example

Checklist

  • I have already looked over the issue tracker for similar issues.
  • This issue can be reproduced on Rust's stable channel.

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