The [0.12.0 docs.rs page](https://docs.rs/crate/nannou/0.12.0) shows a build failure from 11/6/19. The [failed build logs](https://docs.rs/crate/nannou/0.12.0/builds/196525) show the error `OSError: [Errno 30] Read-only file system` . The build container used these package versions: ``` rustc 1.40.0-nightly (1423bec54 2019-11-05) docsrs 0.6.0 (2cc016f 2019-11-06) ```