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error[E0599]: no method named `exec` found for mutable reference `&mut Command` in the current scope
--> $DIR/issue-39175.rs:14:39
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LL | Command::new("echo").arg("hello").exec();
| ^^^^ method not found in `&mut Command`
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= help: items from traits can only be used if the trait is in scope
help: the following trait is implemented but not in scope; perhaps add a `use` for it:
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LL | use std::os::unix::process::CommandExt;
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error: aborting due to previous error
For more information about this error, try `rustc --explain E0599`.
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