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

The reason for future incompatibility

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FutureReleaseErrorDontReportInDeps

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

This will not show up in cargo’s future breakage report. The warning will hence only be seen in local crates, not in dependencies.

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FutureReleaseErrorReportInDeps

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

This is the only reason that will make future incompatibility warnings show up in cargo’s reports. All other future incompatibility warnings are not visible when they occur in a dependency.

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FutureReleaseSemanticsChange

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

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EditionError(Edition)

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

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EditionSemanticsChange(Edition)

Code that changes meaning in some way in the provided edition

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Custom(&'static str)

A custom reason.

Implementations§

Trait Implementations§

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impl Clone for FutureIncompatibilityReason

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fn clone(&self) -> FutureIncompatibilityReason

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for FutureIncompatibilityReason

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Copy for FutureIncompatibilityReason

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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 Twhere 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> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere 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 Twhere 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: 24 bytes

Size for each variant:

  • FutureReleaseErrorDontReportInDeps: 0 bytes
  • FutureReleaseErrorReportInDeps: 0 bytes
  • FutureReleaseSemanticsChange: 0 bytes
  • EditionError: 1 byte
  • EditionSemanticsChange: 1 byte
  • Custom: 23 bytes