`Request` supports generic, type-driven access to data. Its use is currently restricted to the standard library in cases where trait authors wish to allow trait implementors to share generic information across trait boundaries. The motivating and prototypical use case is `core::error::Error` which would otherwise require a method per concrete type (eg. `std::backtrace::Backtrace` instance that implementors want to expose to users).

A type representing an owned, C-compatible, nul-terminated string with no nul bytes in the middle.

Representation of a borrowed C string.

Creates a future which never resolves, representing a computation that never finishes.

A SIMD vector mask for `N` elements of width specified by `Element`.

A SIMD vector with the shape of `[T; N]` but the operations of `T`.

An integer type which can be safely shared between threads.

An iterator over the command environment variables.

Trait that indicates that this is a pointer or a wrapper for one, where unsizing can be performed on the pointee.

Custom code within the asynchronous destructor.