pub enum RegionResolutionError<'tcx> {
    ConcreteFailure(SubregionOrigin<'tcx>, Region<'tcx>, Region<'tcx>),
    GenericBoundFailure(SubregionOrigin<'tcx>, GenericKind<'tcx>, Region<'tcx>),
    SubSupConflict(RegionVidRegionVariableOriginSubregionOrigin<'tcx>, Region<'tcx>, SubregionOrigin<'tcx>, Region<'tcx>, Vec<Span>),
    UpperBoundUniverseConflict(RegionVidRegionVariableOriginUniverseIndexSubregionOrigin<'tcx>, Region<'tcx>),


ConcreteFailure(SubregionOrigin<'tcx>, Region<'tcx>, Region<'tcx>)

ConcreteFailure(o, a, b):

o requires that a <= b, but this does not hold

GenericBoundFailure(SubregionOrigin<'tcx>, GenericKind<'tcx>, Region<'tcx>)

`GenericBoundFailure(p, s, a)

The parameter/associated-type p must be known to outlive the lifetime a (but none of the known bounds are sufficient).

SubSupConflict(RegionVidRegionVariableOriginSubregionOrigin<'tcx>, Region<'tcx>, SubregionOrigin<'tcx>, Region<'tcx>, Vec<Span>)

SubSupConflict(v, v_origin, sub_origin, sub_r, sup_origin, sup_r):

Could not infer a value for v (which has origin v_origin) because sub_r <= v (due to sub_origin) but v <= sup_r (due to sup_origin) and sub_r <= sup_r does not hold.

UpperBoundUniverseConflict(RegionVidRegionVariableOriginUniverseIndexSubregionOrigin<'tcx>, Region<'tcx>)

Indicates a 'b: 'a constraint where 'a is in a universe that cannot name the placeholder 'b.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.


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: 152 bytes

Size for each variant:

  • ConcreteFailure: 52 bytes
  • GenericBoundFailure: 68 bytes
  • SubSupConflict: 148 bytes
  • UpperBoundUniverseConflict: 84 bytes