mirror of
https://github.com/mlua-rs/mlua
synced 2026-06-08 16:05:43 +00:00
Alex Orlenko
91 lines
4.0 KiB
Plaintext
91 lines
4.0 KiB
Plaintext
error[E0596]: cannot borrow `s` as mutable, as it is a captured variable in a `Fn` closure
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--> tests/compile/async_any_userdata_method.rs:9:49
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8 | let mut s = &s;
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| ----- `s` declared here, outside the closure
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9 | reg.add_async_method("t", |_, this, ()| async {
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| ------------- ^^^^^ cannot borrow as mutable
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| |
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| in this closure
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10 | s = &*this;
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| - mutable borrow occurs due to use of `s` in closure
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error[E0373]: async block may outlive the current function, but it borrows `this`, which is owned by the current function
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--> tests/compile/async_any_userdata_method.rs:9:49
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9 | reg.add_async_method("t", |_, this, ()| async {
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| ^^^^^ may outlive borrowed value `this`
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10 | s = &*this;
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| ---- `this` is borrowed here
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note: async block is returned here
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--> tests/compile/async_any_userdata_method.rs:9:49
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9 | reg.add_async_method("t", |_, this, ()| async {
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| _________________________________________________^
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10 | | s = &*this;
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11 | | Ok(())
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12 | | });
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| |_________^
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help: to force the async block to take ownership of `this` (and any other referenced variables), use the `move` keyword
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9 | reg.add_async_method("t", |_, this, ()| async move {
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| ++++
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error: lifetime may not live long enough
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--> tests/compile/async_any_userdata_method.rs:9:49
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9 | reg.add_async_method("t", |_, this, ()| async {
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| ___________________________________-------------_^
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| | | |
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| | | return type of closure `{async block@$DIR/tests/compile/async_any_userdata_method.rs:9:49: 9:54}` contains a lifetime `'2`
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| | lifetime `'1` represents this closure's body
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10 | | s = &*this;
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11 | | Ok(())
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12 | | });
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| |_________^ returning this value requires that `'1` must outlive `'2`
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= note: closure implements `Fn`, so references to captured variables can't escape the closure
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error[E0597]: `s` does not live long enough
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--> tests/compile/async_any_userdata_method.rs:8:21
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7 | let s = String::new();
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| - binding `s` declared here
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8 | let mut s = &s;
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| ^^ borrowed value does not live long enough
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9 | / reg.add_async_method("t", |_, this, ()| async {
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10 | | s = &*this;
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11 | | Ok(())
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12 | | });
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| |__________- argument requires that `s` is borrowed for `'static`
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13 | })
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| - `s` dropped here while still borrowed
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note: requirement that the value outlives `'static` introduced here
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--> src/userdata.rs
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| M: Fn(Lua, UserDataRef<T>, A) -> MR + MaybeSend + 'static,
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| ^^^^^^^
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error[E0373]: closure may outlive the current function, but it borrows `s`, which is owned by the current function
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--> tests/compile/async_any_userdata_method.rs:9:35
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9 | reg.add_async_method("t", |_, this, ()| async {
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| ^^^^^^^^^^^^^ may outlive borrowed value `s`
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10 | s = &*this;
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| - `s` is borrowed here
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note: function requires argument type to outlive `'static`
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--> tests/compile/async_any_userdata_method.rs:9:9
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9 | / reg.add_async_method("t", |_, this, ()| async {
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10 | | s = &*this;
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11 | | Ok(())
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12 | | });
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| |__________^
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help: to force the closure to take ownership of `s` (and any other referenced variables), use the `move` keyword
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9 | reg.add_async_method("t", move |_, this, ()| async {
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| ++++
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