error: lifetime may not live long enough
--> tests/compile/async_any_userdata_method.rs:9:58
|
9 | reg.add_async_method("t", |_, this: &String, ()| async {
| ___________________________________----------------------_^
| | | |
| | | return type of closure `{async block@$DIR/tests/compile/async_any_userdata_method.rs:9:58: 12:10}` contains a lifetime `'2`
| | lifetime `'1` represents this closure's body
10 | | s = this;
11 | | Ok(())
12 | | });
| |_________^ returning this value requires that `'1` must outlive `'2`
|
= note: closure implements `Fn`, so references to captured variables can't escape the closure
error[E0596]: cannot borrow `s` as mutable, as it is a captured variable in a `Fn` closure
--> tests/compile/async_any_userdata_method.rs:9:58
|
9 | reg.add_async_method("t", |_, this: &String, ()| async {
| __________________________________________________________^
10 | | s = this;
| | - mutable borrow occurs due to use of `s` in closure
11 | | Ok(())
12 | | });
| |_________^ cannot borrow as mutable
error[E0597]: `s` does not live long enough
--> tests/compile/async_any_userdata_method.rs:8:21
|
7 | let s = String::new();
| - binding `s` declared here
8 | let mut s = &s;
| ^^ borrowed value does not live long enough
9 | / reg.add_async_method("t", |_, this: &String, ()| async {
10 | | s = this;
11 | | Ok(())
12 | | });
| |__________- argument requires that `s` is borrowed for `'static`
13 | }).unwrap();
| - `s` dropped here while still borrowed
error[E0521]: borrowed data escapes outside of closure
--> tests/compile/async_any_userdata_method.rs:9:9
|
6 | lua.register_userdata_type::<String>(|reg| {
| ---
| |
| `reg` is a reference that is only valid in the closure body
| has type `&mut LuaUserDataRegistry<'1, std::string::String>`
...
9 | / reg.add_async_method("t", |_, this: &String, ()| async {
10 | | s = this;
11 | | Ok(())
12 | | });
| | ^
| | |
| |__________`reg` escapes the closure body here
| argument requires that `'1` must outlive `'static`
|
= note: requirement occurs because of a mutable reference to `LuaUserDataRegistry<'_, std::string::String>`
= note: mutable references are invariant over their type parameter
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
error[E0373]: closure may outlive the current function, but it borrows `s`, which is owned by the current function
--> tests/compile/async_any_userdata_method.rs:9:35
|
9 | reg.add_async_method("t", |_, this: &String, ()| async {
| ^^^^^^^^^^^^^^^^^^^^^^ may outlive borrowed value `s`
10 | s = this;
| - `s` is borrowed here
|
note: function requires argument type to outlive `'static`
--> tests/compile/async_any_userdata_method.rs:9:9
|
9 | / reg.add_async_method("t", |_, this: &String, ()| async {
10 | | s = this;
11 | | Ok(())
12 | | });
| |__________^
help: to force the closure to take ownership of `s` (and any other referenced variables), use the `move` keyword
|
9 | reg.add_async_method("t", move |_, this: &String, ()| async {
| ++++