snap install --beta --devmode rust-coreutils          

error: cannot perform the following tasks:
- Download snap "rust-coreutils" (2) from channel "beta" (received an unexpected http response code (401) when trying to download https://public.apps.ubuntu.com/download-snap/aF0ehIRqpBOP7hu2ELicc1C3SdUnmydq_2.snap)