error: environment variable `NON_EXISTENT` not defined --> $DIR/issue-55897.rs:11:22 | LL | include!(concat!(env!("NON_EXISTENT"), "/data.rs")); | ^^^^^^^^^^^^^^^^^^^^ | = note: this error originates in the macro `env` (in Nightly builds, run with -Z macro-backtrace for more info) error: suffixes on a string literal are invalid --> $DIR/issue-55897.rs:16:22 | LL | include!(concat!("NON_EXISTENT"suffix, "/data.rs")); | ^^^^^^^^^^^^^^^^^^^^ invalid suffix `suffix` error[E0432]: unresolved import `prelude` --> $DIR/issue-55897.rs:1:5 | LL | use prelude::*; | ^^^^^^^ | | | unresolved import | help: a similar path exists: `std::prelude` error[E0432]: unresolved import `env` --> $DIR/issue-55897.rs:4:9 | LL | use env; | ^^^ no `env` in the root error: cannot determine resolution for the macro `env` --> $DIR/issue-55897.rs:6:22 | LL | include!(concat!(env!("NON_EXISTENT"), "/data.rs")); | ^^^ | = note: import resolution is stuck, try simplifying macro imports error: aborting due to 5 previous errors For more information about this error, try `rustc --explain E0432`.