Updating crates.io index
 Downloading crates ...
warning: spurious network error (2 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/either/1.6.1/download`, got 503
warning: spurious network error (2 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/strsim/0.8.0/download`, got 503
warning: spurious network error (2 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/vec_map/0.8.2/download`, got 503
warning: spurious network error (2 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/rustc-hash/1.1.0/download`, got 503
warning: spurious network error (2 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/humantime/2.1.0/download`, got 503
warning: spurious network error (2 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/proc-macro2/1.0.28/download`, got 503
warning: spurious network error (2 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/cfg-if/1.0.0/download`, got 503
warning: spurious network error (2 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/ansi_term/0.11.0/download`, got 503
warning: spurious network error (2 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/quote/1.0.9/download`, got 503
warning: spurious network error (2 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/which/4.2.1/download`, got 503
warning: spurious network error (1 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/either/1.6.1/download`, got 503
warning: spurious network error (1 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/strsim/0.8.0/download`, got 503
warning: spurious network error (1 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/humantime/2.1.0/download`, got 503
warning: spurious network error (1 tries remaining): failed to get 200 response from `https://crates.io/api/v1/crates/which/4.2.1/download`, got 503
error: failed to download from `https://crates.io/api/v1/crates/either/1.6.1/download`

Caused by:
  failed to get 200 response from `https://crates.io/api/v1/crates/either/1.6.1/download`, got 503
==> ERROR: A failure occurred in build().
    Aborting...