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error: called `.collect::<Vec<String>>().join("")` on an iterator
--> $DIR/unnecessary_join.rs:11:10
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LL | .collect::<Vec<String>>()
| __________^
LL | | .join("");
| |_________________^ help: try using: `collect::<String>()`
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= note: `-D clippy::unnecessary-join` implied by `-D warnings`
error: called `.collect::<Vec<String>>().join("")` on an iterator
--> $DIR/unnecessary_join.rs:20:10
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LL | .collect::<Vec<_>>()
| __________^
LL | | .join("");
| |_________________^ help: try using: `collect::<String>()`
error: aborting due to 2 previous errors
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