# Enum rustc_hir_typeck::demand::TypeMismatchSource

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    pub enum TypeMismatchSource<'tcx> {
        Ty(Ty<'tcx>),
        Arg {
            call_expr: &'tcx Expr<'tcx>,
            incompatible_arg: usize,
        },
    }

## Variants§

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### Ty(Ty<'tcx>)

Expected the binding to have the given type, but it was found to have a different type. Find out when that type first became incompatible.

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### Arg

#### Fields

§`call_expr: &'tcx Expr<'tcx>`
§`incompatible_arg: usize`

When we fail during method argument checking, try to find out if a previous expression has constrained the method’s receiver in a way that makes the argument’s type incompatible.

## Auto Trait Implementations§

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### impl<'tcx> !RefUnwindSafe for TypeMismatchSource<'tcx>

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### impl<'tcx> Send for TypeMismatchSource<'tcx>

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### impl<'tcx> Sync for TypeMismatchSource<'tcx>

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### impl<'tcx> Unpin for TypeMismatchSource<'tcx>

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### impl<'tcx> !UnwindSafe for TypeMismatchSource<'tcx>

## Blanket Implementations§

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### impl<T> Any for T
where T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> Borrow<T> for T
where T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for T
where T: ?Sized,

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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T
where U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T, U> TryFrom<U> for T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

## Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain `repr(...)` attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 16 bytes

Size for each variant:

- `Ty`: 16 bytes
- `Arg`: 16 bytes