pub enum FutureIncompatibilityReason {
    FutureReleaseError,
    FutureReleaseErrorReportNow,
    FutureReleaseSemanticsChange,
    EditionError(Edition),
    EditionSemanticsChange(Edition),
    Custom(&'static str),
}
Expand description

The reason for future incompatibility

Variants

FutureReleaseError

This will be an error in a future release for all editions

FutureReleaseErrorReportNow

This will be an error in a future release, and Cargo should create a report even for dependencies

FutureReleaseSemanticsChange

Code that changes meaning in some way in a future release.

EditionError(Edition)

Previously accepted code that will become an error in the provided edition

EditionSemanticsChange(Edition)

Code that changes meaning in some way in the provided edition

Custom(&'static str)

A custom reason.

Implementations

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.

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: 24 bytes

Size for each variant:

  • FutureReleaseError: 0 bytes
  • FutureReleaseErrorReportNow: 0 bytes
  • FutureReleaseSemanticsChange: 0 bytes
  • EditionError: 1 byte
  • EditionSemanticsChange: 1 byte
  • Custom: 23 bytes