src/librustc_error_codes/error_codes/E0164.md

   1 This error means that an attempt was made to match a struct type enum
   2 variant as a non-struct type:
   3
   4 ```compile_fail,E0164
   5 enum Foo { B { i: u32 } }
   6
   7 fn bar(foo: Foo) -> u32 {
   8     match foo {
   9         Foo::B(i) => i, // error E0164
  10     }
  11 }
  12 ```
  13
  14 Try using `{}` instead:
  15
  16 ```
  17 enum Foo { B { i: u32 } }
  18
  19 fn bar(foo: Foo) -> u32 {
  20     match foo {
  21         Foo::B{i} => i,
  22     }
  23 }
  24 ```