Fails to download from crates.io via cargo

trying to build with cargo from a computer that is behind the company's proxy and ending up with the following error information:

warning: spurious network error (1 tries remaining): [56] Failure when receiving data from the peer (Received HTTP code 407 from proxy after CONNECT)
warning: spurious network error (1 tries remaining): [56] Failure when receiving data from the peer (Received HTTP code 407 from proxy after CONNECT)
warning: spurious network error (1 tries remaining): [56] Failure when receiving data from the peer (Received HTTP code 407 from proxy after CONNECT)
warning: spurious network error (1 tries remaining): [56] Failure when receiving data from the peer (Received HTTP code 407 from proxy after CONNECT)
error: failed to download from `https://crates.io/api/v1/crates/actix-codec/0.1.2/download`

Caused by:
  [56] Failure when receiving data from the peer (Received HTTP code 407 from proxy after CONNECT) ```

inserted the proxy information inside the config file , but it is not working
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