error: const `impl` for trait `Add` which is not marked with `#[const_trait]`
  --> $DIR/call-const-trait-method-pass.rs:7:12
   |
LL | impl const std::ops::Add for Int {
   |            ^^^^^^^^^^^^^
   |
   = note: marking a trait with `#[const_trait]` ensures all default method bodies are `const`
   = note: adding a non-const method body in the future would be a breaking change

error: const `impl` for trait `PartialEq` which is not marked with `#[const_trait]`
  --> $DIR/call-const-trait-method-pass.rs:15:12
   |
LL | impl const PartialEq for Int {
   |            ^^^^^^^^^
   |
   = note: marking a trait with `#[const_trait]` ensures all default method bodies are `const`
   = note: adding a non-const method body in the future would be a breaking change

error[E0049]: method `plus` has 1 const parameter but its trait declaration has 0 const parameters
  --> $DIR/call-const-trait-method-pass.rs:24:1
   |
LL | #[const_trait]
   | ^^^^^^^^^^^^^^ found 1 const parameter
LL | pub trait Plus {
LL |     fn plus(self, rhs: Self) -> Self;
   |            - expected 0 const parameters

error[E0015]: cannot call non-const operator in constants
  --> $DIR/call-const-trait-method-pass.rs:39:22
   |
LL | const ADD_INT: Int = Int(1i32) + Int(2i32);
   |                      ^^^^^^^^^^^^^^^^^^^^^
   |
   = note: calls in constants are limited to constant functions, tuple structs and tuple variants
help: add `#![feature(effects)]` to the crate attributes to enable
   |
LL + #![feature(effects)]
   |

error[E0015]: cannot call non-const fn `<i32 as Plus>::plus` in constant functions
  --> $DIR/call-const-trait-method-pass.rs:11:20
   |
LL |         Int(self.0.plus(rhs.0))
   |                    ^^^^^^^^^^^
   |
   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
help: add `#![feature(effects)]` to the crate attributes to enable
   |
LL + #![feature(effects)]
   |

error[E0015]: cannot call non-const fn `<Int as PartialEq>::eq` in constant functions
  --> $DIR/call-const-trait-method-pass.rs:20:15
   |
LL |         !self.eq(other)
   |               ^^^^^^^^^
   |
   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
help: add `#![feature(effects)]` to the crate attributes to enable
   |
LL + #![feature(effects)]
   |

error[E0015]: cannot call non-const fn `<i32 as Plus>::plus` in constant functions
  --> $DIR/call-const-trait-method-pass.rs:36:7
   |
LL |     a.plus(b)
   |       ^^^^^^^
   |
   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
help: add `#![feature(effects)]` to the crate attributes to enable
   |
LL + #![feature(effects)]
   |

error: aborting due to 7 previous errors

Some errors have detailed explanations: E0015, E0049.
For more information about an error, try `rustc --explain E0015`.