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[INFO] [stderr]    Compiling hypercore-protocol v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-executor v0.3.5
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[INFO] [stderr]     Checking hypercore v0.11.1-beta.10 (https://github.com/datrs/hypercore#9b7973da)
[INFO] [stdout] warning: unused import: `TryFutureExt`
[INFO] [stdout]  --> benches/throughput.rs:4:42
[INFO] [stdout]   |
[INFO] [stdout] 4 | use futures::future::{Either, FutureExt, TryFutureExt};
[INFO] [stdout]   |                                          ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for opaque type `impl core::future::future::Future` in the current scope
[INFO] [stdout]   --> examples/hypercore.rs:38:67
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let feed = Feed::builder(public_key, storage).build().unwrap();
[INFO] [stdout]    |                                                                   ^^^^^^ method not found in `impl core::future::future::Future`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FutureExt`
[INFO] [stdout]  --> benches/throughput.rs:4:31
[INFO] [stdout]   |
[INFO] [stdout] 4 | use futures::future::{Either, FutureExt, TryFutureExt};
[INFO] [stdout]   |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hypercore-protocol`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6dc1748fec3094f2a997ee9ea6de619b11cd7262a160a79ee2ede69deb8e5086", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dc1748fec3094f2a997ee9ea6de619b11cd7262a160a79ee2ede69deb8e5086", kill_on_drop: false }`
[INFO] [stdout] 6dc1748fec3094f2a997ee9ea6de619b11cd7262a160a79ee2ede69deb8e5086