A structure-literal syntax was used to create an item that is not a structure or enum variant.
Example of erroneous code:
type U32 = u32; let t = U32 { value: 4 }; // error: expected struct, variant or union type, // found builtin type `u32`
To fix this, ensure that the name was correctly spelled, and that the correct form of initializer was used.
For example, the code above can be fixed to:
enum Foo { FirstValue(i32) } fn main() { let u = Foo::FirstValue(0i32); let t = 4; }