|  | //@ revisions: good bad bad-space | 
|  | //@ check-pass | 
|  |  | 
|  | //@[bad] compile-flags: -Cincremental=true | 
|  | //@[bad] should-fail | 
|  |  | 
|  | //@[bad-space] compile-flags:  -C  incremental=dir | 
|  | //@[bad-space] should-fail | 
|  |  | 
|  | fn main() {} | 
|  |  | 
|  | // Tests should not try to manually enable incremental compilation with | 
|  | // `-Cincremental`, because that typically results in stray directories being | 
|  | // created in the repository root. | 
|  | // | 
|  | // Instead, use the `//@ incremental` directive, which instructs compiletest | 
|  | // to handle the details of passing `-Cincremental` with a fresh directory. |