error[E0433]: failed to resolve: use of undeclared crate or module `env` --> $DIR/builtin-prelude-no-accidents.rs:5:5 | LL | env::current_dir; | ^^^ use of undeclared crate or module `env` | help: consider importing this module | LL + use std::env; | error[E0433]: failed to resolve: use of undeclared crate or module `panic` --> $DIR/builtin-prelude-no-accidents.rs:6:14 | LL | type A = panic::PanicInfo; | ^^^^^ use of undeclared crate or module `panic` | help: consider importing this module | LL + use std::panic; | error[E0433]: failed to resolve: use of undeclared crate or module `vec` --> $DIR/builtin-prelude-no-accidents.rs:7:14 | LL | type B = vec::Vec; | ^^^ use of undeclared crate or module `vec` | help: a struct with a similar name exists | LL | type B = Vec::Vec; | ~~~ help: consider importing this module | LL + use std::vec; | error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0433`.