`manual_memcpy` does not trigger when a loop uses an iterator

Summary

manual_memcpy doesn't trigger when an iterator is used within a for loop.

Lint Name

manual_memcpy

Reproducer

I tried this code:

let src = [0; 64];
let mut dst = [0; 128];
for (i, &val) in src.iter().enumerate() {
    dst[i + 64] = val;
}

I expected to see this happen: Pointing out memcpy is being re-implemented.

Instead, this happened: No warnings were emitted.

Version

rustc 1.86.0-nightly (a580b5c37 2025-01-08)
binary: rustc
commit-hash: a580b5c379b4fca50dfe5afc0fc0ce00921e4e00
commit-date: 2025-01-08
host: aarch64-apple-darwin
release: 1.86.0-nightly
LLVM version: 19.1.6

Start with the manual_memcpy lint and its handling of for loops, then reproduce the reported Rust example using src.iter().enumerate(). Done means the lint emits a warning that the loop reimplements memcpy for this pattern, with coverage for the reproducer.