use non_exhaustive attribute (MSRV: 1.40)

src/format/mod.rs

@@ -357,6 +357,7 @@ impl ParseError {
 
 /// The category of parse error
 #[derive(Debug, Clone, PartialEq, Eq, Copy, Hash)]
+#[non_exhaustive]
 pub enum ParseErrorKind {
     /// Given field is out of permitted range.
     OutOfRange,
@@ -385,10 +386,6 @@ pub enum ParseErrorKind {
 
     /// There was an error on the formatting string, or there were non-supported formating items.
     BadFormat,
-
-    // TODO: Change this to `#[non_exhaustive]` (on the enum) when MSRV is increased
-    #[doc(hidden)]
-    __Nonexhaustive,
 }
 
 /// Same as `Result<T, ParseError>`.
@@ -404,7 +401,6 @@ impl fmt::Display for ParseError {
             ParseErrorKind::TooShort => write!(f, "premature end of input"),
             ParseErrorKind::TooLong => write!(f, "trailing input"),
             ParseErrorKind::BadFormat => write!(f, "bad or unsupported format string"),
-            _ => unreachable!(),
         }
     }
 }

src/format/parsed.rs

@@ -23,6 +23,7 @@ use crate::{Datelike, Timelike};
 /// - `to_*` methods try to make a concrete date and time value out of set fields.
 ///   It fully checks any remaining out-of-range conditions and inconsistent/impossible fields.
 #[derive(Clone, PartialEq, Eq, Debug, Default, Hash)]
+#[non_exhaustive]
 pub struct Parsed {
     /// Year.
     ///
@@ -104,9 +105,6 @@ pub struct Parsed {
 
     /// Offset from the local time to UTC, in seconds.
     pub offset: Option<i32>,
-
-    /// A dummy field to make this type not fully destructible (required for API stability).
-    _dummy: (),
 }
 
 /// Checks if `old` is either empty or has the same value as `new` (i.e. "consistent"),