mirror of https://github.com/rust-lang/rust.git
120 lines
5.9 KiB
Plaintext
120 lines
5.9 KiB
Plaintext
error[E0310]: the parameter type `impl for<'a> Fn(&'a usize) -> Box<I>` may not live long enough
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--> $DIR/unconstrained-closure-lifetime-generic.rs:10:9
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LL | self.bar = Box::new(|baz| Box::new(f(baz)));
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| ^^^^^^^^
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| the parameter type `impl for<'a> Fn(&'a usize) -> Box<I>` must be valid for the static lifetime...
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| ...so that the type `impl for<'a> Fn(&'a usize) -> Box<I>` will meet its required lifetime bounds
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help: consider adding an explicit lifetime bound
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LL | pub fn ack<I>(&mut self, f: impl for<'a> Fn(&'a usize) -> Box<I> + 'static) {
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| +++++++++
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error[E0310]: the parameter type `impl for<'a> Fn(&'a usize) -> Box<I>` may not live long enough
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--> $DIR/unconstrained-closure-lifetime-generic.rs:10:9
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LL | self.bar = Box::new(|baz| Box::new(f(baz)));
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| ^^^^^^^^
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| the parameter type `impl for<'a> Fn(&'a usize) -> Box<I>` must be valid for the static lifetime...
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| ...so that the type `impl for<'a> Fn(&'a usize) -> Box<I>` will meet its required lifetime bounds
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= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
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help: consider adding an explicit lifetime bound
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LL | pub fn ack<I>(&mut self, f: impl for<'a> Fn(&'a usize) -> Box<I> + 'static) {
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| +++++++++
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error[E0310]: the parameter type `impl for<'a> Fn(&'a usize) -> Box<I>` may not live long enough
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--> $DIR/unconstrained-closure-lifetime-generic.rs:10:20
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LL | self.bar = Box::new(|baz| Box::new(f(baz)));
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| ^^^^^^^^
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| |
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| the parameter type `impl for<'a> Fn(&'a usize) -> Box<I>` must be valid for the static lifetime...
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| ...so that the type `impl for<'a> Fn(&'a usize) -> Box<I>` will meet its required lifetime bounds
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help: consider adding an explicit lifetime bound
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LL | pub fn ack<I>(&mut self, f: impl for<'a> Fn(&'a usize) -> Box<I> + 'static) {
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| +++++++++
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error[E0310]: the parameter type `impl for<'a> Fn(&'a usize) -> Box<I>` may not live long enough
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--> $DIR/unconstrained-closure-lifetime-generic.rs:10:20
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LL | self.bar = Box::new(|baz| Box::new(f(baz)));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| |
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| the parameter type `impl for<'a> Fn(&'a usize) -> Box<I>` must be valid for the static lifetime...
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| ...so that the type `impl for<'a> Fn(&'a usize) -> Box<I>` will meet its required lifetime bounds
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help: consider adding an explicit lifetime bound
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LL | pub fn ack<I>(&mut self, f: impl for<'a> Fn(&'a usize) -> Box<I> + 'static) {
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| +++++++++
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error[E0310]: the parameter type `I` may not live long enough
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--> $DIR/unconstrained-closure-lifetime-generic.rs:10:35
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LL | self.bar = Box::new(|baz| Box::new(f(baz)));
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| ^^^^^^^^^^^^^^^^
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| the parameter type `I` must be valid for the static lifetime...
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| ...so that the type `I` will meet its required lifetime bounds
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help: consider adding an explicit lifetime bound
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LL | pub fn ack<I: 'static>(&mut self, f: impl for<'a> Fn(&'a usize) -> Box<I>) {
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| +++++++++
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error[E0310]: the parameter type `I` may not live long enough
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--> $DIR/unconstrained-closure-lifetime-generic.rs:10:35
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LL | self.bar = Box::new(|baz| Box::new(f(baz)));
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| ^^^^^^^^^^^^^^^^
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| the parameter type `I` must be valid for the static lifetime...
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| ...so that the type `I` will meet its required lifetime bounds
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= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
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help: consider adding an explicit lifetime bound
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LL | pub fn ack<I: 'static>(&mut self, f: impl for<'a> Fn(&'a usize) -> Box<I>) {
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| +++++++++
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error[E0311]: the parameter type `I` may not live long enough
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--> $DIR/unconstrained-closure-lifetime-generic.rs:10:35
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LL | pub fn ack<I>(&mut self, f: impl for<'a> Fn(&'a usize) -> Box<I>) {
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| --------- the parameter type `I` must be valid for the anonymous lifetime defined here...
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LL | self.bar = Box::new(|baz| Box::new(f(baz)));
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| ^^^^^^^^^^^^^^^^ ...so that the type `I` will meet its required lifetime bounds
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help: consider adding an explicit lifetime bound
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LL | pub fn ack<'a, I: 'a>(&'a mut self, f: impl for<'a> Fn(&'a usize) -> Box<I>) {
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| +++ ++++ ++
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error[E0597]: `f` does not live long enough
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--> $DIR/unconstrained-closure-lifetime-generic.rs:10:44
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LL | pub fn ack<I>(&mut self, f: impl for<'a> Fn(&'a usize) -> Box<I>) {
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| - binding `f` declared here
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LL | self.bar = Box::new(|baz| Box::new(f(baz)));
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| -------- ----- ^ borrowed value does not live long enough
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| | |
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| | value captured here
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| coercion requires that `f` is borrowed for `'static`
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...
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LL | }
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| - `f` dropped here while still borrowed
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= note: due to object lifetime defaults, `Box<dyn for<'a> Fn(&'a usize) -> Box<(dyn Any + 'a)>>` actually means `Box<(dyn for<'a> Fn(&'a usize) -> Box<(dyn Any + 'a)> + 'static)>`
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error: aborting due to 8 previous errors
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Some errors have detailed explanations: E0310, E0311, E0597.
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For more information about an error, try `rustc --explain E0310`.
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