Error script build substrate

script getsubstrate.io error

```
curl https://getsubstrate.io -sSf | bash


Compiling hex-literal-impl v0.2.0
   Compiling structopt v0.2.18
   Compiling parking_lot v0.7.1
   Compiling vergen v3.0.4
   Compiling futures-timer v0.2.1
error[E0277]: the trait bound `ext::TimeoutStream<S>: futures_core::stream::Stream` is not satisfied
   --> /home/subs/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-timer-0.2.1/src/ext.rs:170:9
    |
170 | impl<S> TryStream for TimeoutStream<S>
    |         ^^^^^^^^^ the trait `futures_core::stream::Stream` is not implemented for `ext::TimeoutStream<S>`
    |
    = note: required because of the requirements on the impl of `futures_core::stream::private_try_stream::Sealed` for `ext::TimeoutStream<S>`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
error: Could not compile `futures-timer`.
warning: build failed, waiting for other jobs to finish...
error: failed to compile `substrate v2.0.0 (/tmp/tmp.bw0orWX5z0)`, intermediate artifacts can be found at `/tmp/tmp.bw0orWX5z0/target`

Caused by:
  build failed
~
Cloning into '/tmp/tmp.JlHv26HwLz'...
remote: Enumerating objects: 67, done.
remote: Counting objects: 100% (67/67), done.
remote: Compressing objects: 100% (48/48), done.
remote: Total 188 (delta 36), reused 37 (delta 19), pack-reused 121
Receiving objects: 100% (188/188), 43.12 KiB | 0 bytes/s, done.
Resolving deltas: 100% (103/103), done.
Checking connectivity... done.
Run source ~/.cargo/env now to update environment
```

then 
run ```source ~/.cargo/env``` and close and open terminal