error: changes to closure capture in Rust 2021 will affect drop order --> $DIR/issue-90465.rs:17:14 | LL | let c0 = move || { | ^^^^^^^ ... LL | let _ = f0; | -- in Rust 2018, this causes the closure to capture `f0`, but in Rust 2021, it has no effect ... LL | } | - in Rust 2018, `f0` is dropped here along with the closure, but in Rust 2021 `f0` is not part of the closure | note: the lint level is defined here --> $DIR/issue-90465.rs:3:9 | LL | #![deny(rust_2021_incompatible_closure_captures)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ = note: for more information, see help: add a dummy let to cause `f0` to be fully captured | LL ~ let c0 = move || { LL + let _ = &f0; | error: aborting due to previous error