derive(Deserialize) panics with index out of bounds for #[serde(skip)]

[matklad]

Observed in this commit

matklad/cargo_metadata@0b1c8d8

   Compiling cargo_metadata v0.9.1 (/home/matklad/projects/cargo_metadata)
error: proc-macro derive panicked
  --> src/messages.rs:99:35
   |
99 | #[derive(Debug, Clone, Serialize, Deserialize)]
   |                                   ^^^^^^^^^^^
   |
   = help: message: index out of bounds: the len is 5 but the index is 5

error: aborting due to previous error

error: could not compile `cargo_metadata`.

I think I am doing something very stupid with this skip, which is a bug in my code, but I think serde still should not panic, but rather explain me that I am holding it wrong?

serde_derive version = "1.0.106"

[dtolnay]

This was a bug; what you are doing should work. Fixed in 1.0.107.