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error: lifetime parameter `'g` only used once
--> $DIR/one-use-in-trait-method-argument.rs:15:13
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LL | fn next<'g>(&'g mut self) -> Option<Self::Item> {
| ^^ -- ...is used only here
| |
| this lifetime...
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note: the lint level is defined here
--> $DIR/one-use-in-trait-method-argument.rs:4:9
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LL | #![deny(single_use_lifetimes)]
| ^^^^^^^^^^^^^^^^^^^^
help: elide the single-use lifetime
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LL - fn next<'g>(&'g mut self) -> Option<Self::Item> {
LL + fn next(&mut self) -> Option<Self::Item> {
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error: aborting due to previous error
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