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// Ensure that both `Box<dyn Error + Send + Sync>` and `Box<dyn Error>` can be
// obtained from `String`.
use std::error::Error;
fn main() {
let _err1: Box<Error + Send + Sync> = From::from("test".to_string());
let _err2: Box<Error> = From::from("test".to_string());
let _err3: Box<Error + Send + Sync + 'static> = From::from("test");
let _err4: Box<Error> = From::from("test");
}
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