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error[E0308]: `match` arms have incompatible types
--> $DIR/issue-17728.rs:108:14
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LL | / match to_parse {
LL | | "w" | "west" => RoomDirection::West,
LL | | "e" | "east" => RoomDirection::East,
LL | | "n" | "north" => RoomDirection::North,
... |
LL | | "down" => RoomDirection::Down,
| | ------------------- this and all prior arms are found to be of type `RoomDirection`
LL | | _ => None
| | ^^^^ expected `RoomDirection`, found `Option<_>`
LL | | }
| |_____- `match` arms have incompatible types
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= note: expected enum `RoomDirection`
found enum `Option<_>`
error: lifetime may not live long enough
--> $DIR/issue-17728.rs:15:28
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LL | fn attemptTraverse(&self, room: &Room, directionStr: &str) -> Result<&Room, &str> {
| - - let's call the lifetime of this reference `'1`
| |
| let's call the lifetime of this reference `'2`
...
LL | Some(entry) => Ok(entry),
| ^^^^^^^^^ method was supposed to return data with lifetime `'2` but it is returning data with lifetime `'1`
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help: consider introducing a named lifetime parameter
|
LL | fn attemptTraverse<'a>(&self, room: &'a Room, directionStr: &str) -> Result<&'a Room, &'a str> {
| ++++ ++ ++ ++
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0308`.
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