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error: lifetime parameter `'a` only used once
--> $DIR/issue-104440.rs:63:8
|
LL | m!('a);
| ^^
| |
| this lifetime...
| ...is used only here
|
note: the lint level is defined here
--> $DIR/issue-104440.rs:2:9
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LL | #![deny(single_use_lifetimes)]
| ^^^^^^^^^^^^^^^^^^^^
error: lifetime parameter `'a` only used once
--> $DIR/issue-104440.rs:38:30
|
LL | fn f<'b, 'c, $a: 'b, 'a: 'c>(t1: &$a(), t2: &'a ()) -> (&'b (), &'c ()) {
| ^^ this lifetime... -- ...is used only here
...
LL | m!('a);
| ------ in this macro invocation
|
= note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 2 previous errors
|
