Trait alloc::fmt::Debug

pub trait Debug {
    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>;
}

? formatting.

Debug should format the output in a programmer-facing, debugging context.

Generally speaking, you should just derive a Debug implementation.

When used with the alternate format specifier #?, the output is pretty-printed.

For more information on formatters, see the module-level documentation.

This trait can be used with #[derive] if all fields implement Debug. When derived for structs, it will use the name of the struct, then {, then a comma-separated list of each field’s name and Debug value, then }. For enums, it will use the name of the variant and, if applicable, (, then the Debug values of the fields, then ).

Stability

Derived Debug formats are not stable, and so may change with future Rust versions. Additionally, Debug implementations of types provided by the standard library (libstd, libcore, liballoc, etc.) are not stable, and may also change with future Rust versions.

Examples

Deriving an implementation:

#[derive(Debug)]
struct Point {
    x: i32,
    y: i32,
}

let origin = Point { x: 0, y: 0 };

assert_eq!(format!("The origin is: {origin:?}"), "The origin is: Point { x: 0, y: 0 }");

Manually implementing:

use std::fmt;

struct Point {
    x: i32,
    y: i32,
}

impl fmt::Debug for Point {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Point")
         .field("x", &self.x)
         .field("y", &self.y)
         .finish()
    }
}

let origin = Point { x: 0, y: 0 };

assert_eq!(format!("The origin is: {origin:?}"), "The origin is: Point { x: 0, y: 0 }");

There are a number of helper methods on the Formatter struct to help you with manual implementations, such as debug_struct.

Types that do not wish to use the standard suite of debug representations provided by the Formatter trait (debug_struct, debug_tuple, debug_list, debug_set, debug_map) can do something totally custom by manually writing an arbitrary representation to the Formatter.

impl fmt::Debug for Point {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "Point [{} {}]", self.x, self.y)
    }
}

Debug implementations using either derive or the debug builder API on Formatter support pretty-printing using the alternate flag: {:#?}.

Pretty-printing with #?:

#[derive(Debug)]
struct Point {
    x: i32,
    y: i32,
}

let origin = Point { x: 0, y: 0 };

assert_eq!(format!("The origin is: {origin:#?}"),
"The origin is: Point {
    x: 0,
    y: 0,
}");

Required Methods

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

Formats the value using the given formatter.

Examples

use std::fmt;

struct Position {
    longitude: f32,
    latitude: f32,
}

impl fmt::Debug for Position {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_tuple("")
         .field(&self.longitude)
         .field(&self.latitude)
         .finish()
    }
}

let position = Position { longitude: 1.987, latitude: 2.983 };
assert_eq!(format!("{position:?}"), "(1.987, 2.983)");

assert_eq!(format!("{position:#?}"), "(
    1.987,
    2.983,
)");

Implementors

impl Debug for core::cmp::Ordering

impl Debug for Infallible

impl Debug for Which

impl Debug for c_void

impl Debug for FpCategory

impl Debug for IntErrorKind

impl Debug for core::sync::atomic::Ordering

impl Debug for TryReserveErrorKind

impl Debug for SearchStep

impl Debug for alloc::fmt::Alignment

impl Debug for bool

impl Debug for char

impl Debug for f32

impl Debug for f64

impl Debug for i8

impl Debug for i16

impl Debug for i32

impl Debug for i64

impl Debug for i128

impl Debug for isize

impl Debug for !

impl Debug for str

impl Debug for u8

impl Debug for u16

impl Debug for u32

impl Debug for u64

impl Debug for u128

impl Debug for ()

impl Debug for usize

impl Debug for TypeId

impl Debug for TryFromSliceError

impl Debug for core::ascii::EscapeDefault

impl Debug for BorrowError

impl Debug for BorrowMutError

impl Debug for CharTryFromError

impl Debug for ParseCharError

impl Debug for DecodeUtf16Error

impl Debug for core::char::EscapeDebug

impl Debug for core::char::EscapeDefault

impl Debug for core::char::EscapeUnicode

impl Debug for ToLowercase

impl Debug for ToUppercase

impl Debug for TryFromCharError

impl Debug for CpuidResult

impl Debug for __m128

impl Debug for __m128bh

impl Debug for __m128d

impl Debug for __m128i

impl Debug for __m256

impl Debug for __m256bh

impl Debug for __m256d

impl Debug for __m256i

impl Debug for __m512

impl Debug for __m512bh

impl Debug for __m512d

impl Debug for __m512i

impl Debug for CStr

impl Debug for FromBytesUntilNulError

impl Debug for FromBytesWithNulError

impl Debug for SipHasher

impl Debug for PhantomPinned

impl Debug for Assume

impl Debug for ParseFloatError

impl Debug for ParseIntError

impl Debug for TryFromIntError

impl Debug for NonZeroI8

impl Debug for NonZeroI16

impl Debug for NonZeroI32

impl Debug for NonZeroI64

impl Debug for NonZeroI128

impl Debug for NonZeroIsize

impl Debug for NonZeroU8

impl Debug for NonZeroU16

impl Debug for NonZeroU32

impl Debug for NonZeroU64

impl Debug for NonZeroU128

impl Debug for NonZeroUsize

impl Debug for RangeFull

impl Debug for core::ptr::alignment::Alignment

impl Debug for AtomicBool

impl Debug for AtomicI8

impl Debug for AtomicI16

impl Debug for AtomicI32

impl Debug for AtomicI64

impl Debug for AtomicIsize

impl Debug for AtomicU8

impl Debug for AtomicU16

impl Debug for AtomicU32

impl Debug for AtomicU64

impl Debug for AtomicUsize

impl Debug for Context<'_>

impl Debug for RawWaker

impl Debug for RawWakerVTable

impl Debug for Waker

impl Debug for Duration

impl Debug for FromFloatSecsError

impl Debug for AllocError

impl Debug for Global

impl Debug for Layout

impl Debug for LayoutError

impl Debug for TryReserveError

impl Debug for CString

impl Debug for FromVecWithNulError

impl Debug for IntoStringError

impl Debug for NulError

impl Debug for Chars<'_>

impl Debug for EncodeUtf16<'_>

impl Debug for ParseBoolError

impl Debug for Utf8Chunks<'_>

impl Debug for Utf8Error

impl Debug for alloc::string::Drain<'_>

impl Debug for FromUtf8Error

impl Debug for FromUtf16Error

impl Debug for String

impl Debug for Arguments<'_>

impl Debug for Error

impl Debug for dyn Any + 'static

impl Debug for dyn Any + Send + 'static

impl Debug for dyn Any + Send + Sync + 'static

impl<'a> Debug for Demand<'a>

impl<'a> Debug for Source<'a>

impl<'a> Debug for Location<'a>

impl<'a> Debug for PanicInfo<'a>

impl<'a> Debug for EscapeAscii<'a>

impl<'a> Debug for CharSearcher<'a>

impl<'a> Debug for Bytes<'a>

impl<'a> Debug for CharIndices<'a>

impl<'a> Debug for alloc::str::EscapeDebug<'a>

impl<'a> Debug for alloc::str::EscapeDefault<'a>

impl<'a> Debug for alloc::str::EscapeUnicode<'a>

impl<'a> Debug for Lines<'a>

impl<'a> Debug for LinesAny<'a>

impl<'a> Debug for SplitAsciiWhitespace<'a>

impl<'a> Debug for SplitWhitespace<'a>

impl<'a> Debug for Utf8Chunk<'a>

impl<'a, 'b> Debug for CharSliceSearcher<'a, 'b>

impl<'a, 'b> Debug for StrSearcher<'a, 'b>

impl<'a, 'b, const N: usize> Debug for CharArrayRefSearcher<'a, 'b, N>

impl<'a, 'f> Debug for VaList<'a, 'f>where
    'f: 'a,

impl<'a, A> Debug for core::option::Iter<'a, A>where
    A: 'a + Debug,

impl<'a, A> Debug for core::option::IterMut<'a, A>where
    A: 'a + Debug,

impl<'a, I> Debug for ByRefSized<'a, I>where
    I: Debug,

impl<'a, I: Debug + Iterator + 'a, A: Debug + Allocator + 'a> Debug for Splice<'a, I, A>where
    I::Item: Debug,

impl<'a, P> Debug for MatchIndices<'a, P>where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug,

impl<'a, P> Debug for Matches<'a, P>where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug,

impl<'a, P> Debug for RMatchIndices<'a, P>where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug,

impl<'a, P> Debug for RMatches<'a, P>where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug,

impl<'a, P> Debug for alloc::str::RSplit<'a, P>where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug,

impl<'a, P> Debug for alloc::str::RSplitN<'a, P>where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug,

impl<'a, P> Debug for RSplitTerminator<'a, P>where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug,

impl<'a, P> Debug for alloc::str::Split<'a, P>where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug,

impl<'a, P> Debug for alloc::str::SplitInclusive<'a, P>where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug,

impl<'a, P> Debug for alloc::str::SplitN<'a, P>where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug,

impl<'a, P> Debug for SplitTerminator<'a, P>where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug,

impl<'a, T> Debug for core::result::Iter<'a, T>where
    T: 'a + Debug,

impl<'a, T> Debug for core::result::IterMut<'a, T>where
    T: 'a + Debug,

impl<'a, T> Debug for Chunks<'a, T>where
    T: 'a + Debug,

impl<'a, T> Debug for ChunksExact<'a, T>where
    T: 'a + Debug,

impl<'a, T> Debug for ChunksExactMut<'a, T>where
    T: 'a + Debug,

impl<'a, T> Debug for ChunksMut<'a, T>where
    T: 'a + Debug,

impl<'a, T> Debug for RChunks<'a, T>where
    T: 'a + Debug,

impl<'a, T> Debug for RChunksExact<'a, T>where
    T: 'a + Debug,

impl<'a, T> Debug for RChunksExactMut<'a, T>where
    T: 'a + Debug,

impl<'a, T> Debug for RChunksMut<'a, T>where
    T: 'a + Debug,

impl<'a, T> Debug for Windows<'a, T>where
    T: 'a + Debug,

impl<'a, T, P> Debug for GroupBy<'a, T, P>where
    T: 'a + Debug,

impl<'a, T, P> Debug for GroupByMut<'a, T, P>where
    T: 'a + Debug,

impl<'a, T, const N: usize> Debug for alloc::slice::ArrayChunks<'a, T, N>where
    T: 'a + Debug,

impl<'a, T, const N: usize> Debug for ArrayChunksMut<'a, T, N>where
    T: 'a + Debug,

impl<'a, T, const N: usize> Debug for ArrayWindows<'a, T, N>where
    T: 'a + Debug,

impl<'a, T: Debug + 'a> Debug for alloc::collections::binary_heap::Drain<'a, T>

impl<'a, T: Debug + 'a> Debug for alloc::collections::btree_set::Range<'a, T>

impl<'a, T: Debug + Ord> Debug for DrainSorted<'a, T>

impl<'a, T: Debug, F: Debug, A: Debug + Allocator> Debug for alloc::vec::DrainFilter<'a, T, F, A>where
    F: FnMut(&mut T) -> bool,

impl<'a, const N: usize> Debug for CharArraySearcher<'a, N>

impl<'f> Debug for VaListImpl<'f>

impl<A> Debug for Repeat<A>where
    A: Debug,

impl<A> Debug for core::option::IntoIter<A>where
    A: Debug,

impl<A, B> Debug for Chain<A, B>where
    A: Debug,
    B: Debug,

impl<A, B> Debug for Zip<A, B>where
    A: Debug,
    B: Debug,

impl<B, C> Debug for ControlFlow<B, C>where
    B: Debug,
    C: Debug,

impl<B: ?Sized> Debug for Cow<'_, B>where
    B: Debug + ToOwned<Owned: Debug>,

impl<Dyn> Debug for DynMetadata<Dyn>where
    Dyn: ?Sized,

impl<F> Debug for PollFn<F>

impl<F> Debug for FromFn<F>

impl<F> Debug for OnceWith<F>where
    F: Debug,

impl<F> Debug for RepeatWith<F>where
    F: Debug,

impl<F> Debug for CharPredicateSearcher<'_, F>where
    F: FnMut(char) -> bool,

impl<H> Debug for BuildHasherDefault<H>

impl<I> Debug for FromIter<I>where
    I: Debug,

impl<I> Debug for DecodeUtf16<I>where
    I: Debug + Iterator<Item = u16>,

impl<I> Debug for Cloned<I>where
    I: Debug,

impl<I> Debug for Copied<I>where
    I: Debug,

impl<I> Debug for Cycle<I>where
    I: Debug,

impl<I> Debug for Enumerate<I>where
    I: Debug,

impl<I> Debug for Fuse<I>where
    I: Debug,

impl<I> Debug for Intersperse<I>where
    I: Debug + Iterator,
    <I as Iterator>::Item: Clone + Debug,

impl<I> Debug for Peekable<I>where
    I: Debug + Iterator,
    <I as Iterator>::Item: Debug,

impl<I> Debug for Skip<I>where
    I: Debug,

impl<I> Debug for StepBy<I>where
    I: Debug,

impl<I> Debug for Take<I>where
    I: Debug,

impl<I, F> Debug for FilterMap<I, F>where
    I: Debug,

impl<I, F> Debug for Inspect<I, F>where
    I: Debug,

impl<I, F> Debug for Map<I, F>where
    I: Debug,

impl<I, G> Debug for IntersperseWith<I, G>where
    I: Iterator + Debug,
    <I as Iterator>::Item: Debug,
    G: Debug,

impl<I, P> Debug for Filter<I, P>where
    I: Debug,

impl<I, P> Debug for MapWhile<I, P>where
    I: Debug,

impl<I, P> Debug for SkipWhile<I, P>where
    I: Debug,

impl<I, P> Debug for TakeWhile<I, P>where
    I: Debug,

impl<I, St, F> Debug for Scan<I, St, F>where
    I: Debug,
    St: Debug,

impl<I, U> Debug for Flatten<I>where
    I: Debug + Iterator,
    <I as Iterator>::Item: IntoIterator<IntoIter = U, Item = <U as Iterator>::Item>,
    U: Debug + Iterator,

impl<I, U, F> Debug for FlatMap<I, U, F>where
    I: Debug,
    U: IntoIterator,
    <U as IntoIterator>::IntoIter: Debug,

impl<I, const N: usize> Debug for core::iter::adapters::array_chunks::ArrayChunks<I, N>where
    I: Debug + Iterator,
    <I as Iterator>::Item: Debug,

impl<Idx> Debug for core::ops::range::Range<Idx>where
    Idx: Debug,

impl<Idx> Debug for RangeFrom<Idx>where
    Idx: Debug,

impl<Idx> Debug for RangeInclusive<Idx>where
    Idx: Debug,

impl<Idx> Debug for RangeTo<Idx>where
    Idx: Debug,

impl<Idx> Debug for RangeToInclusive<Idx>where
    Idx: Debug,

impl<K, V, F> Debug for alloc::collections::btree_map::DrainFilter<'_, K, V, F>where
    K: Debug,
    V: Debug,
    F: FnMut(&K, &mut V) -> bool,

impl<K, V: Debug> Debug for Values<'_, K, V>

impl<K, V: Debug> Debug for ValuesMut<'_, K, V>

impl<K, V: Debug, A: Allocator + Clone> Debug for IntoValues<K, V, A>

impl<K: Debug + Ord, V, A: Allocator + Clone> Debug for VacantEntry<'_, K, V, A>

impl<K: Debug + Ord, V: Debug, A: Allocator + Clone> Debug for Entry<'_, K, V, A>

impl<K: Debug + Ord, V: Debug, A: Allocator + Clone> Debug for OccupiedEntry<'_, K, V, A>

impl<K: Debug + Ord, V: Debug, A: Allocator + Clone> Debug for OccupiedError<'_, K, V, A>

impl<K: Debug, V> Debug for Keys<'_, K, V>

impl<K: Debug, V, A: Allocator + Clone> Debug for IntoKeys<K, V, A>

impl<K: Debug, V: Debug> Debug for alloc::collections::btree_map::Iter<'_, K, V>

impl<K: Debug, V: Debug> Debug for alloc::collections::btree_map::IterMut<'_, K, V>

impl<K: Debug, V: Debug> Debug for alloc::collections::btree_map::Range<'_, K, V>

impl<K: Debug, V: Debug> Debug for RangeMut<'_, K, V>

impl<K: Debug, V: Debug, A: Allocator + Clone> Debug for BTreeMap<K, V, A>

impl<K: Debug, V: Debug, A: Allocator + Clone> Debug for alloc::collections::btree_map::IntoIter<K, V, A>

impl<P> Debug for Pin<P>where
    P: Debug,

impl<Ret, T> Debug for fn (T₁, T₂, …, Tₙ) -> Ret

This trait is implemented for function pointers with up to twelve arguments.

impl<Ret, T> Debug for extern "C" fn (T₁, T₂, …, Tₙ) -> Ret

This trait is implemented for function pointers with up to twelve arguments.

impl<Ret, T> Debug for extern "C" fn (T₁, T₂, …, Tₙ, ...) -> Ret

This trait is implemented for function pointers with up to twelve arguments.

impl<Ret, T> Debug for unsafe fn (T₁, T₂, …, Tₙ) -> Ret

This trait is implemented for function pointers with up to twelve arguments.

impl<Ret, T> Debug for unsafe extern "C" fn (T₁, T₂, …, Tₙ) -> Ret

This trait is implemented for function pointers with up to twelve arguments.

impl<Ret, T> Debug for unsafe extern "C" fn (T₁, T₂, …, Tₙ, ...) -> Ret

This trait is implemented for function pointers with up to twelve arguments.

impl<T> Debug for Bound<T>where
    T: Debug,

impl<T> Debug for Option<T>where
    T: Debug,

impl<T> Debug for Poll<T>where
    T: Debug,

impl<T> Debug for *const Twhere
    T: ?Sized,

impl<T> Debug for *mut Twhere
    T: ?Sized,

impl<T> Debug for &Twhere
    T: Debug + ?Sized,

impl<T> Debug for &mut Twhere
    T: Debug + ?Sized,

impl<T> Debug for [T]where
    T: Debug,

impl<T> Debug for (T₁, T₂, …, Tₙ)where
    T: Debug + ?Sized,

This trait is implemented for tuples up to twelve items long.

impl<T> Debug for OnceCell<T>where
    T: Debug,

impl<T> Debug for Cell<T>where
    T: Copy + Debug,

impl<T> Debug for Ref<'_, T>where
    T: Debug + ?Sized,

impl<T> Debug for RefCell<T>where
    T: Debug + ?Sized,

impl<T> Debug for RefMut<'_, T>where
    T: Debug + ?Sized,

impl<T> Debug for SyncUnsafeCell<T>where
    T: ?Sized,

impl<T> Debug for UnsafeCell<T>where
    T: ?Sized,

impl<T> Debug for Reverse<T>where
    T: Debug,

impl<T> Debug for Pending<T>

impl<T> Debug for core::future::ready::Ready<T>where
    T: Debug,

impl<T> Debug for Rev<T>where
    T: Debug,

impl<T> Debug for Empty<T>

impl<T> Debug for Once<T>where
    T: Debug,

impl<T> Debug for PhantomData<T>where
    T: ?Sized,

impl<T> Debug for ManuallyDrop<T>where
    T: Debug + ?Sized,

impl<T> Debug for Discriminant<T>

impl<T> Debug for Saturating<T>where
    T: Debug,

impl<T> Debug for Wrapping<T>where
    T: Debug,

impl<T> Debug for Yeet<T>where
    T: Debug,

impl<T> Debug for AssertUnwindSafe<T>where
    T: Debug,

impl<T> Debug for NonNull<T>where
    T: ?Sized,

impl<T> Debug for core::result::IntoIter<T>where
    T: Debug,

impl<T> Debug for AtomicPtr<T>

impl<T> Debug for Exclusive<T>where
    T: ?Sized,

impl<T> Debug for core::task::ready::Ready<T>

impl<T> Debug for alloc::slice::Iter<'_, T>where
    T: Debug,

impl<T> Debug for alloc::slice::IterMut<'_, T>where
    T: Debug,

impl<T> Debug for MaybeUninit<T>

impl<T, E> Debug for Result<T, E>where
    T: Debug,
    E: Debug,

impl<T, F> Debug for LazyCell<T, F>where
    T: Debug,

impl<T, F> Debug for Successors<T, F>where
    T: Debug,

impl<T, F, A: Allocator + Clone> Debug for alloc::collections::btree_set::DrainFilter<'_, T, F, A>where
    T: Debug,
    F: FnMut(&T) -> bool,

impl<T, P> Debug for alloc::slice::RSplit<'_, T, P>where
    T: Debug,
    P: FnMut(&T) -> bool,

impl<T, P> Debug for RSplitMut<'_, T, P>where
    T: Debug,
    P: FnMut(&T) -> bool,

impl<T, P> Debug for alloc::slice::RSplitN<'_, T, P>where
    T: Debug,
    P: FnMut(&T) -> bool,

impl<T, P> Debug for RSplitNMut<'_, T, P>where
    T: Debug,
    P: FnMut(&T) -> bool,

impl<T, P> Debug for alloc::slice::Split<'_, T, P>where
    T: Debug,
    P: FnMut(&T) -> bool,

impl<T, P> Debug for alloc::slice::SplitInclusive<'_, T, P>where
    T: Debug,
    P: FnMut(&T) -> bool,

impl<T, P> Debug for SplitInclusiveMut<'_, T, P>where
    T: Debug,
    P: FnMut(&T) -> bool,

impl<T, P> Debug for SplitMut<'_, T, P>where
    T: Debug,
    P: FnMut(&T) -> bool,

impl<T, P> Debug for alloc::slice::SplitN<'_, T, P>where
    T: Debug,
    P: FnMut(&T) -> bool,

impl<T, P> Debug for SplitNMut<'_, T, P>where
    T: Debug,
    P: FnMut(&T) -> bool,

impl<T, const LANES: usize> Debug for Mask<T, LANES>where
    T: MaskElement + Debug,
    LaneCount<LANES>: SupportedLaneCount,

impl<T, const LANES: usize> Debug for Simd<T, LANES>where
    LaneCount<LANES>: SupportedLaneCount,
    T: SimdElement + Debug,

impl<T, const N: usize> Debug for [T; N]where
    T: Debug,

impl<T, const N: usize> Debug for core::array::iter::IntoIter<T, N>where
    T: Debug,

impl<T: Ord + Debug> Debug for PeekMut<'_, T>

impl<T: Debug + ?Sized, A: Allocator> Debug for Box<T, A>

impl<T: Debug> Debug for BinaryHeap<T>

impl<T: Debug> Debug for alloc::collections::binary_heap::IntoIter<T>

impl<T: Debug> Debug for IntoIterSorted<T>

impl<T: Debug> Debug for alloc::collections::binary_heap::Iter<'_, T>

impl<T: Debug> Debug for alloc::collections::btree_set::Iter<'_, T>

impl<T: Debug> Debug for SymmetricDifference<'_, T>

impl<T: Debug> Debug for Union<'_, T>

impl<T: Debug> Debug for Cursor<'_, T>

impl<T: Debug> Debug for CursorMut<'_, T>

impl<T: Debug> Debug for alloc::collections::linked_list::IntoIter<T>

impl<T: Debug> Debug for alloc::collections::linked_list::Iter<'_, T>

impl<T: Debug> Debug for alloc::collections::linked_list::IterMut<'_, T>

impl<T: Debug> Debug for LinkedList<T>

impl<T: Debug> Debug for alloc::collections::vec_deque::Iter<'_, T>

impl<T: Debug> Debug for alloc::collections::vec_deque::IterMut<'_, T>

impl<T: Debug, A: Allocator + Clone> Debug for BTreeSet<T, A>

impl<T: Debug, A: Allocator + Clone> Debug for Difference<'_, T, A>

impl<T: Debug, A: Allocator + Clone> Debug for Intersection<'_, T, A>

impl<T: Debug, A: Allocator> Debug for alloc::collections::vec_deque::Drain<'_, T, A>

impl<T: Debug, A: Allocator> Debug for alloc::collections::vec_deque::IntoIter<T, A>

impl<T: Debug, A: Allocator> Debug for VecDeque<T, A>

impl<T: Debug, A: Allocator> Debug for alloc::vec::Drain<'_, T, A>

impl<T: Debug, A: Allocator> Debug for alloc::vec::IntoIter<T, A>

impl<T: Debug, A: Allocator> Debug for Vec<T, A>

impl<T: Debug, A: Debug + Allocator + Clone> Debug for alloc::collections::btree_set::IntoIter<T, A>

impl<T: Debug, F> Debug for alloc::collections::linked_list::DrainFilter<'_, T, F>where
    F: FnMut(&mut T) -> bool,

impl<T: ?Sized + Debug> Debug for ThinBox<T>

impl<T: ?Sized + Debug> Debug for Rc<T>

impl<T: ?Sized + Debug> Debug for alloc::rc::Weak<T>

impl<T: ?Sized + Debug> Debug for Arc<T>

impl<T: ?Sized + Debug> Debug for alloc::sync::Weak<T>

impl<Y, R> Debug for GeneratorState<Y, R>where
    Y: Debug,
    R: Debug,

impl Debug for Level

impl Debug for Diagnostic

impl Debug for LexError

impl Debug for ExpandError

impl Debug for TokenStream

impl Debug for Span

impl Debug for LineColumn

impl Debug for SourceFile

impl Debug for TokenTree

impl Debug for Delimiter

impl Debug for Group

impl Debug for Spacing

impl Debug for Punct

impl Debug for Ident

impl Debug for Literal

impl<T: 'static> Debug for LocalKey<T>

impl Debug for AccessError

impl Debug for Scope<'_, '_>

impl<'scope, T> Debug for ScopedJoinHandle<'scope, T>

impl Debug for Builder

impl Debug for ThreadId

impl Debug for Thread

impl<T> Debug for JoinHandle<T>

impl Debug for BacktraceStatus

impl Debug for Backtrace

impl Debug for BacktraceFrame

impl<K, V, S> Debug for HashMap<K, V, S>where
    K: Debug,
    V: Debug,

impl<K: Debug, V: Debug> Debug for Iter<'_, K, V>

impl<K: Debug, V> Debug for Keys<'_, K, V>

impl<K, V: Debug> Debug for Values<'_, K, V>

impl<K, V, S> Debug for RawEntryBuilderMut<'_, K, V, S>

impl<K: Debug, V: Debug, S> Debug for RawEntryMut<'_, K, V, S>

impl<K: Debug, V: Debug, S> Debug for RawOccupiedEntryMut<'_, K, V, S>

impl<K, V, S> Debug for RawVacantEntryMut<'_, K, V, S>

impl<K, V, S> Debug for RawEntryBuilder<'_, K, V, S>

impl<K: Debug, V: Debug> Debug for Entry<'_, K, V>

impl<K: Debug, V: Debug> Debug for OccupiedEntry<'_, K, V>

impl<K: Debug, V> Debug for VacantEntry<'_, K, V>

impl<K: Debug, V: Debug> Debug for OccupiedError<'_, K, V>

impl<K, V> Debug for IterMut<'_, K, V>where
    K: Debug,
    V: Debug,

impl<K: Debug, V: Debug> Debug for IntoIter<K, V>

impl<K, V: Debug> Debug for ValuesMut<'_, K, V>

impl<K: Debug, V> Debug for IntoKeys<K, V>

impl<K, V: Debug> Debug for IntoValues<K, V>

impl<K, V> Debug for Drain<'_, K, V>where
    K: Debug,
    V: Debug,

impl<'a, K, V, F> Debug for DrainFilter<'a, K, V, F>where
    F: FnMut(&K, &mut V) -> bool,

impl Debug for DefaultHasher

impl Debug for RandomState

impl<T, S> Debug for HashSet<T, S>where
    T: Debug,

impl<K: Debug> Debug for Iter<'_, K>

impl<K: Debug> Debug for IntoIter<K>

impl<K: Debug> Debug for Drain<'_, K>

impl<'a, K, F> Debug for DrainFilter<'a, K, F>where
    F: FnMut(&K) -> bool,

impl<T, S> Debug for Intersection<'_, T, S>where
    T: Debug + Eq + Hash,
    S: BuildHasher,

impl<T, S> Debug for Difference<'_, T, S>where
    T: Debug + Eq + Hash,
    S: BuildHasher,

impl<T, S> Debug for SymmetricDifference<'_, T, S>where
    T: Debug + Eq + Hash,
    S: BuildHasher,

impl<T, S> Debug for Union<'_, T, S>where
    T: Debug + Eq + Hash,
    S: BuildHasher,

impl Debug for Vars

impl Debug for VarsOs

impl Debug for VarError

impl Debug for SplitPaths<'_>

impl Debug for JoinPathsError

impl Debug for Args

impl Debug for ArgsOs

impl<E> Debug for Report<E>where
    Report<E>: Display,

impl Debug for OsString

impl Debug for OsStr

impl Debug for ReadDir

impl Debug for OpenOptions

impl Debug for FileTimes

impl Debug for Permissions

impl Debug for FileType

impl Debug for DirBuilder

impl Debug for File

impl Debug for Metadata

impl Debug for DirEntry

impl<R> Debug for BufReader<R>where
    R: Debug,

impl Debug for WriterPanicked

impl<W: Write> Debug for BufWriter<W>where
    W: Debug,

impl<W: Write> Debug for LineWriter<W>where
    W: Debug,

impl<W: Debug> Debug for IntoInnerError<W>

impl<T: Debug> Debug for Cursor<T>

impl Debug for Error

impl Debug for ErrorKind

impl Debug for BorrowedBuf<'_>

impl<'a> Debug for BorrowedCursor<'a>

impl Debug for Stdin

impl Debug for StdinLock<'_>

impl Debug for Stdout

impl Debug for StdoutLock<'_>

impl Debug for Stderr

impl Debug for StderrLock<'_>

impl Debug for Empty

impl Debug for Repeat

impl Debug for Sink

impl<'a> Debug for IoSliceMut<'a>

impl<'a> Debug for IoSlice<'a>

impl Debug for SeekFrom

impl<T: Debug, U: Debug> Debug for Chain<T, U>

impl<T: Debug> Debug for Take<T>

impl<R: Debug> Debug for Bytes<R>

impl<B: Debug> Debug for Split<B>

impl<B: Debug> Debug for Lines<B>

impl Debug for Ipv6MulticastScope

impl Debug for IpAddr

impl Debug for Ipv4Addr

impl Debug for Ipv6Addr

impl Debug for AddrParseError

impl Debug for SocketAddr

impl Debug for SocketAddrV4

impl Debug for SocketAddrV6

impl<'a> Debug for Incoming<'a>

impl Debug for IntoIncoming

impl Debug for TcpStream

impl Debug for TcpListener

impl Debug for UdpSocket

impl Debug for Shutdown

impl Debug for SocketAddr

impl Debug for AncillaryError

impl<'a> Debug for SocketAncillary<'a>

impl Debug for UnixDatagram

impl Debug for UnixListener

impl<'a> Debug for Incoming<'a>

impl Debug for UnixStream

impl Debug for UCred

impl Debug for PidFd

impl Debug for HandleOrNull

impl Debug for HandleOrInvalid

impl Debug for NullHandleError

impl Debug for InvalidHandleError

impl Debug for BorrowedHandle<'_>

impl Debug for OwnedHandle

impl Debug for BorrowedSocket<'_>

impl Debug for OwnedSocket

impl Debug for BorrowedFd<'_>

impl Debug for OwnedFd

impl Debug for BacktraceStyle

impl<'a> Debug for Prefix<'a>

impl<'a> Debug for PrefixComponent<'a>

impl<'a> Debug for Component<'a>

impl Debug for Components<'_>

impl Debug for Iter<'_>

impl<'a> Debug for Ancestors<'a>

impl Debug for PathBuf

impl Debug for StripPrefixError

impl Debug for Path

impl Debug for Display<'_>

impl Debug for Child

impl Debug for ChildStdin

impl Debug for ChildStdout

impl Debug for ChildStderr

impl Debug for Command

impl<'a> Debug for CommandArgs<'a>

impl Debug for Output

impl Debug for Stdio

impl Debug for ExitStatus

impl Debug for ExitStatusError

impl Debug for ExitCode

impl<'a, T: Debug + 'a> Debug for Iter<'a, T>

impl<'a, T: Debug + 'a> Debug for TryIter<'a, T>

impl<T: Debug> Debug for IntoIter<T>

impl Debug for RecvError

impl Debug for TryRecvError

impl Debug for RecvTimeoutError

impl<T> Debug for Sender<T>

impl<T> Debug for SyncSender<T>

impl<T> Debug for Receiver<T>

impl<T> Debug for SendError<T>

impl<T> Debug for TrySendError<T>

impl Debug for Barrier

impl Debug for BarrierWaitResult

impl Debug for WaitTimeoutResult

impl Debug for Condvar

impl<T: Debug, F> Debug for LazyLock<T, F>

impl<T: ?Sized + Debug> Debug for Mutex<T>

impl<T: ?Sized + Debug> Debug for MutexGuard<'_, T>

impl Debug for Once

impl Debug for OnceState

impl<T: Debug> Debug for OnceLock<T>

impl<T> Debug for PoisonError<T>

impl<T> Debug for TryLockError<T>

impl<T: ?Sized + Debug> Debug for RwLock<T>

impl<T: Debug> Debug for RwLockReadGuard<'_, T>

impl<T: Debug> Debug for RwLockWriteGuard<'_, T>

impl Debug for SystemTimeError

impl Debug for Instant

impl Debug for SystemTime

impl<'a> Debug for CommandEnvs<'a>

impl Debug for System

impl Debug for BenchSamples

impl Debug for TestOpts

impl Debug for Metric

impl Debug for Concurrent

impl Debug for ShouldPanic

impl Debug for ColorConfig

impl Debug for OutputFormat

impl Debug for RunIgnored

impl Debug for Options

impl Debug for Summary

impl Debug for TestResult

impl Debug for TestExecTime

impl Debug for TestTimeOptions

impl Debug for TestType

impl Debug for NamePadding

impl Debug for TestName

impl Debug for TestFn

impl Debug for TestId

impl Debug for TestDesc

impl Debug for TestDescAndFn