The following errors were reported:
error[E0282]: type annotations needed
 --> src/main.rs:2:9
  |
2 |     let _ = None.unwrap_or_default();
  |         ^   ---- type must be known at this point
  |
help: consider giving this pattern a type
  |
2 |     let _: /* Type */ = None.unwrap_or_default();
  |          ++++++++++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0282`.
Original diagnostics will follow.

warning: if let can be simplified with `.unwrap_or_default()`
 --> src/main.rs:2:13
  |
2 |       let _ = if let Some(x) = None {
  |  _____________^
3 | |         x
4 | |     } else {
5 | |         i32::default()
6 | |     };
  | |_____^ help: replace it with: `None.unwrap_or_default()`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
  = note: `#[warn(clippy::manual_unwrap_or_default)]` on by default

warning: `foo` (bin "foo") generated 1 warning (run `cargo clippy --fix --bin "foo"` to apply 1 suggestion)
warning: failed to automatically apply fixes suggested by rustc to crate `foo`

rustc 1.79.0-nightly (a07f3eb43 2024-04-11)
binary: rustc
commit-hash: a07f3eb43acc5df851e15176c7081a900a30a4d7
commit-date: 2024-04-11
host: x86_64-unknown-linux-gnu
release: 1.79.0-nightly
LLVM version: 18.1.3