Struct global::BorrowFail

pub struct BorrowFail;

A failure occured while borrowing the global value.

This happens when the value is incorrectly borrowed twice within a single thread. While cross-thread locking will simply block until the value is available, within a single thread potential deadlocks are detected. An error can occur in one of three ways:

• Attempting to immutably borrow a value that is already mutably borrowed.
• Attempting to mutably borrow a value that is already mutably borrowed.
• Attempting to mutably borrow a value that is already immutably borrowed.

Note that this error will not be raised in the case of multiple immutable borrows.

Trait Implementations

impl Debug for BorrowFail

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

Formats the value using the given formatter.

impl Display for BorrowFail

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

Formats the value using the given formatter.

impl Error for BorrowFail

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, demand: &mut Demand<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type based access to context intended for error reports.