https://github.com/rust-lang/rust-clippy/issues/6797
error[E0382]: use of partially moved value: `self`
--> serde_derive/src/internals/attr.rs:71:24
|
71 | self.value.map(|value| (self.tokens, value))
| ----^^^^^^^----------------------
| | | |
| | | use occurs due to use in closure
| | value used here after partial move
| `self.value` partially moved due to this method call
|
note: this function takes ownership of the receiver `self`, which moves `self.value`
--> /home/david/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:485:38
|
485 | pub fn map<U, F: FnOnce(T) -> U>(self, f: F) -> Option<U> {
| ^^^^
= note: partial move occurs because `self.value` has type `std::option::Option<T>`, which does not implement the `Copy` trait
This usage is fine. It's mirroring trait signatures in syn::visit::Visit.
error: unused `self` argument
--> serde_derive/src/bound.rs:241:24
|
241 | fn visit_macro(&mut self, _mac: &'ast syn::Macro) {}
| ^^^^^^^^^
|
note: the lint level is defined here
--> serde_derive/src/lib.rs:18:22
|
18 | #![deny(clippy::all, clippy::pedantic)]
| ^^^^^^^^^^^^^^^^
= note: `#[deny(clippy::unused_self)]` implied by `#[deny(clippy::pedantic)]`
= help: consider refactoring to a associated function
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_self
David Tolnay