error[E0119]: conflicting implementations of trait `From<std::io::Error>` for type `Error`
 --> tests/ui/same-from-type.rs:8:15
  |
6 |     OpenFile(#[from] std::io::Error),
  |              ------- first implementation here
7 |     #[error("failed to close")]
8 |     CloseFile(#[from] std::io::Error),
  |               ^^^^^^^ conflicting implementation for `Error`