|  | error: environment variable `\t` not defined at compile time | 
|  | --> $DIR/name-whitespace-issue-110547.rs:4:5 | 
|  | | | 
|  | LL |     env!{"\t"}; | 
|  | |     ^^^^^^^^^^ | 
|  | | | 
|  | = help: use `std::env::var("\t")` to read the variable at run time | 
|  |  | 
|  | error: environment variable `\t` not defined at compile time | 
|  | --> $DIR/name-whitespace-issue-110547.rs:5:5 | 
|  | | | 
|  | LL |     env!("\t"); | 
|  | |     ^^^^^^^^^^ | 
|  | | | 
|  | = help: use `std::env::var("\t")` to read the variable at run time | 
|  |  | 
|  | error: environment variable `\u{2069}` not defined at compile time | 
|  | --> $DIR/name-whitespace-issue-110547.rs:6:5 | 
|  | | | 
|  | LL |     env!("\u{2069}"); | 
|  | |     ^^^^^^^^^^^^^^^^ | 
|  | | | 
|  | = help: use `std::env::var("\u{2069}")` to read the variable at run time | 
|  |  | 
|  | error: aborting due to 3 previous errors | 
|  |  |