Enum cargo::core::resolver::dep_cache::RequirementError

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enum RequirementError {
    MissingFeature(InternedString),
    MissingDependency(InternedString),
    Cycle(InternedString),
}
Expand description

An error for a requirement.

This will later be converted to an ActivateError depending on whether or not this is a dependency or a root package.

Variants§

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MissingFeature(InternedString)

The package does not have the requested feature.

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MissingDependency(InternedString)

The package does not have the requested dependency.

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Cycle(InternedString)

A feature has a direct cycle to itself.

Note that cycles through multiple features are allowed (but perhaps they shouldn’t be?).

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

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Immutably 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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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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type Output = T

Should always be Self
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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>

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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.
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

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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:

  • MissingFeature: 16 bytes
  • MissingDependency: 16 bytes
  • Cycle: 16 bytes