No error message when entering bad infohash/magnet

[anacrolix]

I manually added a magnet, but it was excessively escaped. I don't think it was added to confluence, and there was no message telling me it was bad. Here is the link: magnet%3a%3fxt%3durn%3abtih%3a9f9165d9a281a9b8e782cd5176bbcc8256fd1871%26dn%3dUbuntu%2b16.04.1%2bLTS%2bDesktop%2b64-bit%26tr%3dudp%253A%252F%252Ftracker.leechers-paradise.org%253A6969%26tr%3dudp%253A%252F%252Fzer0day.ch%253A1337%26tr%3dudp%253A%252F%252Fopen.demonii.com%253A1337%26tr%3dudp%253A%252F%252Ftracker.coppersurfer.tk%253A6969%26tr%3dudp%253A%252F%252Fexodus.desync.com%253A6969