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error: character literal may only contain one codepoint
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--> $DIR/str-as-char.rs:4:14
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LL | println!('●●');
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| ^^^^
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help: if you meant to write a string literal, use double quotes
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LL - println!('●●');
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LL + println!("●●");
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error: aborting due to 1 previous error
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