False positive of `clippy::same_item_push`

[EFanZh]

Lint name: clippy::same_item_push

I tried this code:

fn main() {
    let mut v = Vec::new();

    for _ in 0..10 {
        v.push(1);
        v.extend(&[2]);
    }
}

I expected to see this happen: the code passes clippy check.

Instead, this happened: clippy warns clippy::same_item_push.

Meta

• cargo clippy -V: clippy 0.1.51 (2fd73fab 2021-03-23)
• rustc -Vv:

  rustc 1.51.0 (2fd73fabe 2021-03-23)
  binary: rustc
  commit-hash: 2fd73fabe469357a12c2c974c140f67e7cdd76d0
  commit-date: 2021-03-23
  host: x86_64-pc-windows-msvc
  release: 1.51.0
  LLVM version: 11.0.1