pub struct OccupiedError<'a, K, V> where
    K: 'a,
    V: 'a,  {
    pub entry: OccupiedEntry<'a, K, V>,
    pub value: V,
}
🔬 This is a nightly-only experimental API. (
map_try_insert #82766)
 Expand description
The error returned by try_insert when the key already exists.
Contains the occupied entry, and the value that was not inserted.
🔬 This is a nightly-only experimental API. (
map_try_insert #82766)
 The entry in the map that was already occupied.
🔬 This is a nightly-only experimental API. (
map_try_insert #82766)
 The value which was not inserted, because the entry was already occupied.
Formats the value using the given formatter. Read more
Formats the value using the given formatter. Read more
👎 Deprecated since 1.42.0: 
use the Display impl or to_string()
 
The lower-level source of this error, if any. Read more
🔬 This is a nightly-only experimental API. (
backtrace #53487)
 Returns a stack backtrace, if available, of where this error occurred. Read more
👎 Deprecated since 1.33.0: 
replaced by Error::source, which can support downcasting
 impl<T> Any for T where
    T: 'static + ?Sized, 
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
impl<T, U> Into<U> for T where
    U: From<T>, 
Converts the given value to a String. Read more
The type returned in the event of a conversion error.
The type returned in the event of a conversion error.