error: call to deprecated safe function `std::env::set_var` is unsafe and requires unsafe block --> $DIR/unsafe-env-suggestion.rs:9:5 | LL | env::set_var("FOO", "BAR"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function | = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2024! = note: for more information, see issue #27970 note: the lint level is defined here --> $DIR/unsafe-env-suggestion.rs:3:9 | LL | #![deny(deprecated_safe_2024)] | ^^^^^^^^^^^^^^^^^^^^ help: you can wrap the call in an `unsafe` block if you can guarantee that the environment access only happens in single-threaded code | LL + // TODO: Audit that the environment access only happens in single-threaded code. LL ~ unsafe { env::set_var("FOO", "BAR") }; | error: call to deprecated safe function `std::env::remove_var` is unsafe and requires unsafe block --> $DIR/unsafe-env-suggestion.rs:12:5 | LL | env::remove_var("FOO"); | ^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function | = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2024! = note: for more information, see issue #27970 help: you can wrap the call in an `unsafe` block if you can guarantee that the environment access only happens in single-threaded code | LL + // TODO: Audit that the environment access only happens in single-threaded code. LL ~ unsafe { env::remove_var("FOO") }; | error: aborting due to 2 previous errors