| An unknown or invalid lint was used on the command line. | |
| Erroneous code example: | |
| rustc[2m[97m [0m[2m[97m-[0m[33mD[0m[2m[97m [0mbogus[2m[97m [0mrust_file[2m[97m.[0mrs | |
| Maybe you just misspelled the lint name or the lint doesn't exist anymore. Either way, try to update/remove it in order to fix the error. |