clippy::suspicious_xor_used_as_pow: `^` is not the exponentiation operator

What you see

warning: `^` is not the exponentiation operator
 --> main.rs:3:9
  |
3 | let x = 3_i32 ^ 4_i32;
  |         ^^^^^^^^^^^^^
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/stable/index.html#suspicious_xor_used_as_pow
  = note: requested on the command line with `-W clippy::suspicious-xor-used-as-pow`
help: did you mean to write
  |
3 - let x = 3_i32 ^ 4_i32;
3 + let x = 3i32.pow(4i32);
  |

Real output of Clippy 0.1.99 (Rust 1.99) on the example below. Names and line numbers in yours will differ.

Does it matter?

It’s most probably a typo and may lead to unexpected behaviours.

Lints that forbid language features for specific codebases (no unwrap, no indexing...). Off by default; pick them one by one, never the whole group.

How to fix it

Clippy does not fix this one automatically (its suggestion may change behaviour, so it only shows it). Change the code by hand:

Flagged

let x = 3_i32 ^ 4_i32;

Write this instead

let x = 3_i32.pow(4);

Turn it off, or on

It is off by default. To use it, set it to warn or deny:

[lints.clippy]
suspicious_xor_used_as_pow = "warn"

#![warn(clippy::suspicious_xor_used_as_pow)]

cargo clippy -- -W clippy::suspicious-xor-used-as-pow

The [lints] table needs Rust 1.74 or newer. In a workspace, put it under [workspace.lints.clippy] and add [lints] workspace = true to each member.