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error[E0057]: this function takes 1 argument but 0 arguments were supplied
--> $DIR/E0057.rs:3:13
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LL | let a = f();
| ^-- argument #1 is missing
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note: closure defined here
--> $DIR/E0057.rs:2:13
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LL | let f = |x| x * 3;
| ^^^
help: provide the argument
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LL | let a = f(/* x */);
| +++++++
error[E0057]: this function takes 1 argument but 2 arguments were supplied
--> $DIR/E0057.rs:5:13
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LL | let c = f(2, 3);
| ^ - unexpected argument #2 of type `{integer}`
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note: closure defined here
--> $DIR/E0057.rs:2:13
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LL | let f = |x| x * 3;
| ^^^
help: remove the extra argument
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LL - let c = f(2, 3);
LL + let c = f(2);
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error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0057`.
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