error[E0004]: non-exhaustive patterns: `E::B` and `E::C` not covered --> $DIR/non-exhaustive-defined-here.rs:35:11 | LL | match e1 { | ^^ patterns `E::B` and `E::C` not covered | note: `E` defined here --> $DIR/non-exhaustive-defined-here.rs:14:5 | LL | enum E { | - ... LL | B, | ^ not covered ... LL | C | ^ not covered = note: the matched value is of type `E` help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms | LL ~ E::A => {} LL + E::B | E::C => todo!() | error[E0005]: refutable pattern in local binding --> $DIR/non-exhaustive-defined-here.rs:41:9 | LL | let E::A = e; | ^^^^ patterns `E::B` and `E::C` not covered | = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html note: `E` defined here --> $DIR/non-exhaustive-defined-here.rs:6:6 | LL | enum E { | ^ ... LL | B, | - not covered ... LL | C | - not covered = note: the matched value is of type `E` help: you might want to use `if let` to ignore the variants that aren't matched | LL | if let E::A = e { todo!() } | ++ ~~~~~~~~~~~ error[E0004]: non-exhaustive patterns: `&E::B` and `&E::C` not covered --> $DIR/non-exhaustive-defined-here.rs:50:11 | LL | match e { | ^ patterns `&E::B` and `&E::C` not covered | note: `E` defined here --> $DIR/non-exhaustive-defined-here.rs:14:5 | LL | enum E { | - ... LL | B, | ^ not covered ... LL | C | ^ not covered = note: the matched value is of type `&E` help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms | LL ~ E::A => {} LL + &E::B | &E::C => todo!() | error[E0005]: refutable pattern in local binding --> $DIR/non-exhaustive-defined-here.rs:57:9 | LL | let E::A = e; | ^^^^ patterns `&E::B` and `&E::C` not covered | = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html note: `E` defined here --> $DIR/non-exhaustive-defined-here.rs:6:6 | LL | enum E { | ^ ... LL | B, | - not covered ... LL | C | - not covered = note: the matched value is of type `&E` help: you might want to use `if let` to ignore the variants that aren't matched | LL | if let E::A = e { todo!() } | ++ ~~~~~~~~~~~ error[E0004]: non-exhaustive patterns: `&&mut &E::B` and `&&mut &E::C` not covered --> $DIR/non-exhaustive-defined-here.rs:66:11 | LL | match e { | ^ patterns `&&mut &E::B` and `&&mut &E::C` not covered | note: `E` defined here --> $DIR/non-exhaustive-defined-here.rs:14:5 | LL | enum E { | - ... LL | B, | ^ not covered ... LL | C | ^ not covered = note: the matched value is of type `&&mut &E` help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms | LL ~ E::A => {} LL + &&mut &E::B | &&mut &E::C => todo!() | error[E0005]: refutable pattern in local binding --> $DIR/non-exhaustive-defined-here.rs:73:9 | LL | let E::A = e; | ^^^^ patterns `&&mut &E::B` and `&&mut &E::C` not covered | = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html note: `E` defined here --> $DIR/non-exhaustive-defined-here.rs:6:6 | LL | enum E { | ^ ... LL | B, | - not covered ... LL | C | - not covered = note: the matched value is of type `&&mut &E` help: you might want to use `if let` to ignore the variants that aren't matched | LL | if let E::A = e { todo!() } | ++ ~~~~~~~~~~~ error[E0004]: non-exhaustive patterns: `Opt::None` not covered --> $DIR/non-exhaustive-defined-here.rs:92:11 | LL | match e { | ^ pattern `Opt::None` not covered | note: `Opt` defined here --> $DIR/non-exhaustive-defined-here.rs:85:5 | LL | enum Opt { | --- ... LL | None, | ^^^^ not covered = note: the matched value is of type `Opt` help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown | LL ~ Opt::Some(ref _x) => {} LL + Opt::None => todo!() | error[E0005]: refutable pattern in local binding --> $DIR/non-exhaustive-defined-here.rs:99:9 | LL | let Opt::Some(ref _x) = e; | ^^^^^^^^^^^^^^^^^ pattern `Opt::None` not covered | = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html note: `Opt` defined here --> $DIR/non-exhaustive-defined-here.rs:81:6 | LL | enum Opt { | ^^^ ... LL | None, | ---- not covered = note: the matched value is of type `Opt` help: you might want to use `let else` to handle the variant that isn't matched | LL | let Opt::Some(ref _x) = e else { todo!() }; | ++++++++++++++++ error: aborting due to 8 previous errors Some errors have detailed explanations: E0004, E0005. For more information about an error, try `rustc --explain E0004`.