#[non_exhaustive]
pub enum Level {
    Error,
    Warning,
    Note,
    Help,
}
🔬 This is a nightly-only experimental API.  (
proc_macro_diagnostic #54140)
 An enum representing a diagnostic level.
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
🔬 This is a nightly-only experimental API.  (
proc_macro_diagnostic #54140)
 🔬 This is a nightly-only experimental API.  (
proc_macro_diagnostic #54140)
 🔬 This is a nightly-only experimental API.  (
proc_macro_diagnostic #54140)
 🔬 This is a nightly-only experimental API.  (
proc_macro_diagnostic #54140)
 
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more
Creates owned data from borrowed data, usually by cloning. Read more
🔬 This is a nightly-only experimental API.  (toowned_clone_into #41263)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
 
🔬 This is a nightly-only experimental API.  (
try_from #33417)
 The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API.  (
try_from #33417)
  Immutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API.  (get_type_id #27745)
this method will likely be replaced by an associated static
🔬 This is a nightly-only experimental API.  (
try_from #33417)
 The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API.  (
try_from #33417)
  Mutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API.  (rustc_private #27812)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?
Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S is the encoder/decoder state type, T is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more