コンパイルエラー

   Compiling Rust v0.1.0 (/judge/rust_workspace)
error: expected one of `!` or `::`, found `<eof>`
 --> src/main.rs:1:1
  |
1 | abc
  | ^^^ expected one of `!` or `::`

error: aborting due to previous error

error: could not compile `Rust`

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