Dec 18 17:05:30.952 INFO checking devp2p-0.4.1 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 17:05:30.952 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/devp2p/0.4.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 17:05:31.144 INFO [stdout] 265d57d879c55399775249bae62116cdc6c944e88ba845fdb66f2ba7125f22c0
Dec 18 17:05:31.146 INFO running `"docker" "start" "-a" "265d57d879c55399775249bae62116cdc6c944e88ba845fdb66f2ba7125f22c0"`
Dec 18 17:05:32.680 INFO [stderr]     Checking ethereum-rlp v0.2.3
Dec 18 17:05:32.680 INFO [stderr]     Checking tokio-timer-plus v0.1.3
Dec 18 17:05:33.500 INFO [stderr]     Checking ethereum-bigint v0.2.9
Dec 18 17:05:35.178 INFO [stderr]     Checking ethereum-block-core v0.1.0
Dec 18 17:05:35.178 INFO [stderr]     Checking ethereum-bloom v0.2.1
Dec 18 17:05:35.178 INFO [stderr]     Checking ethereum-trie v0.3.8
Dec 18 17:05:35.178 INFO [stderr]     Checking rlpx v0.4.1
Dec 18 17:05:35.178 INFO [stderr]     Checking dpt v0.3.1
Dec 18 17:05:38.044 INFO [stderr]     Checking ethereum-block v0.3.5
Dec 18 17:05:40.149 INFO [stderr]     Checking devp2p v0.4.1 (/opt/crater/workdir)
Dec 18 17:05:42.556 INFO [stderr] warning: unused import: `future`
Dec 18 17:05:42.556 INFO [stderr]  --> src/raw.rs:9:61
Dec 18 17:05:42.556 INFO [stderr]   |
Dec 18 17:05:42.556 INFO [stderr] 9 | use futures::{StartSend, Async, Poll, Stream, Sink, Future, future};
Dec 18 17:05:42.556 INFO [stderr]   |                                                             ^^^^^^
Dec 18 17:05:42.556 INFO [stderr]   |
Dec 18 17:05:42.556 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 17:05:42.556 INFO [stderr] 
Dec 18 17:05:42.556 INFO [stderr] warning: unused import: `Decodable`
Dec 18 17:05:42.557 INFO [stderr]  --> src/eth/proto.rs:1:22
Dec 18 17:05:42.557 INFO [stderr]   |
Dec 18 17:05:42.557 INFO [stderr] 1 | use rlp::{Encodable, Decodable, RlpStream, DecoderError, UntrustedRlp};
Dec 18 17:05:42.557 INFO [stderr]   |                      ^^^^^^^^^
Dec 18 17:05:42.557 INFO [stderr] 
Dec 18 17:05:42.557 INFO [stderr] warning: unused imports: `Address`, `B256`, `Gas`
Dec 18 17:05:42.557 INFO [stderr]  --> src/eth/proto.rs:2:14
Dec 18 17:05:42.557 INFO [stderr]   |
Dec 18 17:05:42.557 INFO [stderr] 2 | use bigint::{Address, Gas, H256, U256, B256};
Dec 18 17:05:42.557 INFO [stderr]   |              ^^^^^^^  ^^^              ^^^^
Dec 18 17:05:42.557 INFO [stderr] 
Dec 18 17:05:42.557 INFO [stderr] warning: unused imports: `DecoderError`, `Encodable`, `RlpStream`
Dec 18 17:05:42.557 INFO [stderr]    --> src/eth/proto.rs:196:21
Dec 18 17:05:42.557 INFO [stderr]     |
Dec 18 17:05:42.557 INFO [stderr] 196 |     use rlp::{self, Encodable, Decodable, RlpStream, DecoderError, UntrustedRlp};
Dec 18 17:05:42.557 INFO [stderr]     |                     ^^^^^^^^^             ^^^^^^^^^  ^^^^^^^^^^^^
Dec 18 17:05:42.557 INFO [stderr] 
Dec 18 17:05:42.568 INFO [stderr] warning: unused import: `future`
Dec 18 17:05:42.568 INFO [stderr]  --> src/eth/mod.rs:3:72
Dec 18 17:05:42.568 INFO [stderr]   |
Dec 18 17:05:42.568 INFO [stderr] 3 | use futures::{StartSend, Async, Poll, Stream, Sink, AsyncSink, Future, future};
Dec 18 17:05:42.568 INFO [stderr]   |                                                                        ^^^^^^
Dec 18 17:05:42.568 INFO [stderr] 
Dec 18 17:05:42.568 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 18 17:05:42.568 INFO [stderr]   --> src/eth/mod.rs:11:5
Dec 18 17:05:42.568 INFO [stderr]    |
Dec 18 17:05:42.568 INFO [stderr] 11 | use std::time::Duration;
Dec 18 17:05:42.568 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 18 17:05:42.568 INFO [stderr] 
Dec 18 17:05:42.804 INFO [stderr] warning: unreachable expression
Dec 18 17:05:42.804 INFO [stderr]    --> src/raw.rs:125:9
Dec 18 17:05:42.804 INFO [stderr]     |
Dec 18 17:05:42.804 INFO [stderr] 125 |         Ok(Async::Ready(()))
Dec 18 17:05:42.804 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^
Dec 18 17:05:42.804 INFO [stderr]     |
Dec 18 17:05:42.804 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 18 17:05:42.804 INFO [stderr] 
Dec 18 17:05:42.820 INFO [stderr] warning: unreachable expression
Dec 18 17:05:42.820 INFO [stderr]    --> src/raw.rs:145:9
Dec 18 17:05:42.820 INFO [stderr]     |
Dec 18 17:05:42.820 INFO [stderr] 145 |         Ok(Async::Ready(()))
Dec 18 17:05:42.820 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^
Dec 18 17:05:42.820 INFO [stderr] 
Dec 18 17:05:43.088 INFO [stderr] warning: unused import: `Decodable`
Dec 18 17:05:43.088 INFO [stderr]    --> src/eth/proto.rs:196:32
Dec 18 17:05:43.088 INFO [stderr]     |
Dec 18 17:05:43.088 INFO [stderr] 196 |     use rlp::{self, Encodable, Decodable, RlpStream, DecoderError, UntrustedRlp};
Dec 18 17:05:43.088 INFO [stderr]     |                                ^^^^^^^^^
Dec 18 17:05:43.088 INFO [stderr] 
Dec 18 17:05:43.088 INFO [stderr] warning: unused import: `Future`
Dec 18 17:05:43.088 INFO [stderr]  --> src/eth/mod.rs:3:64
Dec 18 17:05:43.088 INFO [stderr]   |
Dec 18 17:05:43.088 INFO [stderr] 3 | use futures::{StartSend, Async, Poll, Stream, Sink, AsyncSink, Future, future};
Dec 18 17:05:43.088 INFO [stderr]   |                                                                ^^^^^^
Dec 18 17:05:43.088 INFO [stderr] 
Dec 18 17:05:43.145 INFO [stderr] warning: unused variable: `v`
Dec 18 17:05:43.145 INFO [stderr]    --> src/eth/mod.rs:174:36
Dec 18 17:05:43.145 INFO [stderr]     |
Dec 18 17:05:43.145 INFO [stderr] 174 |             Ok(AsyncSink::NotReady(v)) => Ok(AsyncSink::NotReady(val)),
Dec 18 17:05:43.145 INFO [stderr]     |                                    ^ help: consider using `_v` instead
Dec 18 17:05:43.145 INFO [stderr]     |
Dec 18 17:05:43.145 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 17:05:43.145 INFO [stderr] 
Dec 18 17:05:43.172 INFO [stderr] warning: variable does not need to be mutable
Dec 18 17:05:43.172 INFO [stderr]   --> src/raw.rs:46:13
Dec 18 17:05:43.172 INFO [stderr]    |
Dec 18 17:05:43.172 INFO [stderr] 46 |         let mut rlpx = RLPxStream::new(handle, secret_key.clone(),
Dec 18 17:05:43.172 INFO [stderr]    |             ----^^^^
Dec 18 17:05:43.172 INFO [stderr]    |             |
Dec 18 17:05:43.172 INFO [stderr]    |             help: remove this `mut`
Dec 18 17:05:43.172 INFO [stderr]    |
Dec 18 17:05:43.172 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 17:05:43.172 INFO [stderr] 
Dec 18 17:05:43.332 INFO [stderr] warning: field is never used: `network_id`
Dec 18 17:05:43.332 INFO [stderr]   --> src/eth/mod.rs:48:5
Dec 18 17:05:43.332 INFO [stderr]    |
Dec 18 17:05:43.332 INFO [stderr] 48 |     network_id: usize,
Dec 18 17:05:43.332 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 18 17:05:43.332 INFO [stderr]    |
Dec 18 17:05:43.332 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 17:05:43.332 INFO [stderr] 
Dec 18 17:05:43.752 INFO [stderr] warning: unused import: `future`
Dec 18 17:05:43.752 INFO [stderr]  --> src/raw.rs:9:61
Dec 18 17:05:43.752 INFO [stderr]   |
Dec 18 17:05:43.752 INFO [stderr] 9 | use futures::{StartSend, Async, Poll, Stream, Sink, Future, future};
Dec 18 17:05:43.752 INFO [stderr]   |                                                             ^^^^^^
Dec 18 17:05:43.752 INFO [stderr]   |
Dec 18 17:05:43.752 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 17:05:43.752 INFO [stderr] 
Dec 18 17:05:43.752 INFO [stderr] warning: unused import: `Decodable`
Dec 18 17:05:43.752 INFO [stderr]  --> src/eth/proto.rs:1:22
Dec 18 17:05:43.752 INFO [stderr]   |
Dec 18 17:05:43.752 INFO [stderr] 1 | use rlp::{Encodable, Decodable, RlpStream, DecoderError, UntrustedRlp};
Dec 18 17:05:43.752 INFO [stderr]   |                      ^^^^^^^^^
Dec 18 17:05:43.753 INFO [stderr] 
Dec 18 17:05:43.753 INFO [stderr] warning: unused imports: `Address`, `B256`, `Gas`
Dec 18 17:05:43.753 INFO [stderr]  --> src/eth/proto.rs:2:14
Dec 18 17:05:43.753 INFO [stderr]   |
Dec 18 17:05:43.753 INFO [stderr] 2 | use bigint::{Address, Gas, H256, U256, B256};
Dec 18 17:05:43.753 INFO [stderr]   |              ^^^^^^^  ^^^              ^^^^
Dec 18 17:05:43.753 INFO [stderr] 
Dec 18 17:05:43.753 INFO [stderr] warning: unused import: `future`
Dec 18 17:05:43.753 INFO [stderr]  --> src/eth/mod.rs:3:72
Dec 18 17:05:43.753 INFO [stderr]   |
Dec 18 17:05:43.753 INFO [stderr] 3 | use futures::{StartSend, Async, Poll, Stream, Sink, AsyncSink, Future, future};
Dec 18 17:05:43.753 INFO [stderr]   |                                                                        ^^^^^^
Dec 18 17:05:43.753 INFO [stderr] 
Dec 18 17:05:43.753 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 18 17:05:43.753 INFO [stderr]   --> src/eth/mod.rs:11:5
Dec 18 17:05:43.753 INFO [stderr]    |
Dec 18 17:05:43.753 INFO [stderr] 11 | use std::time::Duration;
Dec 18 17:05:43.753 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 18 17:05:43.753 INFO [stderr] 
Dec 18 17:05:43.851 INFO [stderr] warning: unreachable expression
Dec 18 17:05:43.851 INFO [stderr]    --> src/raw.rs:125:9
Dec 18 17:05:43.851 INFO [stderr]     |
Dec 18 17:05:43.851 INFO [stderr] 125 |         Ok(Async::Ready(()))
Dec 18 17:05:43.851 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^
Dec 18 17:05:43.851 INFO [stderr]     |
Dec 18 17:05:43.851 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 18 17:05:43.851 INFO [stderr] 
Dec 18 17:05:43.855 INFO [stderr] warning: unreachable expression
Dec 18 17:05:43.855 INFO [stderr]    --> src/raw.rs:145:9
Dec 18 17:05:43.855 INFO [stderr]     |
Dec 18 17:05:43.855 INFO [stderr] 145 |         Ok(Async::Ready(()))
Dec 18 17:05:43.855 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^
Dec 18 17:05:43.855 INFO [stderr] 
Dec 18 17:05:43.932 INFO [stderr] warning: unused import: `Future`
Dec 18 17:05:43.932 INFO [stderr]  --> src/eth/mod.rs:3:64
Dec 18 17:05:43.932 INFO [stderr]   |
Dec 18 17:05:43.932 INFO [stderr] 3 | use futures::{StartSend, Async, Poll, Stream, Sink, AsyncSink, Future, future};
Dec 18 17:05:43.932 INFO [stderr]   |                                                                ^^^^^^
Dec 18 17:05:43.932 INFO [stderr] 
Dec 18 17:05:43.952 INFO [stderr] warning: unused variable: `v`
Dec 18 17:05:43.952 INFO [stderr]    --> src/eth/mod.rs:174:36
Dec 18 17:05:43.952 INFO [stderr]     |
Dec 18 17:05:43.952 INFO [stderr] 174 |             Ok(AsyncSink::NotReady(v)) => Ok(AsyncSink::NotReady(val)),
Dec 18 17:05:43.952 INFO [stderr]     |                                    ^ help: consider using `_v` instead
Dec 18 17:05:43.952 INFO [stderr]     |
Dec 18 17:05:43.952 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 17:05:43.952 INFO [stderr] 
Dec 18 17:05:43.952 INFO [stderr] warning: variable does not need to be mutable
Dec 18 17:05:43.952 INFO [stderr]   --> src/raw.rs:46:13
Dec 18 17:05:43.952 INFO [stderr]    |
Dec 18 17:05:43.952 INFO [stderr] 46 |         let mut rlpx = RLPxStream::new(handle, secret_key.clone(),
Dec 18 17:05:43.952 INFO [stderr]    |             ----^^^^
Dec 18 17:05:43.952 INFO [stderr]    |             |
Dec 18 17:05:43.952 INFO [stderr]    |             help: remove this `mut`
Dec 18 17:05:43.952 INFO [stderr]    |
Dec 18 17:05:43.952 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 17:05:43.952 INFO [stderr] 
Dec 18 17:05:44.008 INFO [stderr] warning: field is never used: `network_id`
Dec 18 17:05:44.008 INFO [stderr]   --> src/eth/mod.rs:48:5
Dec 18 17:05:44.008 INFO [stderr]    |
Dec 18 17:05:44.008 INFO [stderr] 48 |     network_id: usize,
Dec 18 17:05:44.008 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 18 17:05:44.008 INFO [stderr]    |
Dec 18 17:05:44.008 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 17:05:44.008 INFO [stderr] 
Dec 18 17:05:45.768 INFO [stderr] warning: unused `#[macro_use]` import
Dec 18 17:05:45.768 INFO [stderr]  --> examples/eth_connect.rs:9:1
Dec 18 17:05:45.768 INFO [stderr]   |
Dec 18 17:05:45.768 INFO [stderr] 9 | #[macro_use]
Dec 18 17:05:45.768 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 17:05:45.768 INFO [stderr]   |
Dec 18 17:05:45.768 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 17:05:45.768 INFO [stderr] 
Dec 18 17:05:45.768 INFO [stderr] warning: unused `#[macro_use]` import
Dec 18 17:05:45.768 INFO [stderr]   --> examples/eth_connect.rs:11:1
Dec 18 17:05:45.768 INFO [stderr]    |
Dec 18 17:05:45.768 INFO [stderr] 11 | #[macro_use]
Dec 18 17:05:45.768 INFO [stderr]    | ^^^^^^^^^^^^
Dec 18 17:05:45.768 INFO [stderr] 
Dec 18 17:05:45.768 INFO [stderr] warning: unused import: `PublicKey`
Dec 18 17:05:45.768 INFO [stderr]   --> examples/eth_connect.rs:20:17
Dec 18 17:05:45.768 INFO [stderr]    |
Dec 18 17:05:45.768 INFO [stderr] 20 | use secp256k1::{PublicKey, SecretKey};
Dec 18 17:05:45.768 INFO [stderr]    |                 ^^^^^^^^^
Dec 18 17:05:45.768 INFO [stderr] 
Dec 18 17:05:45.768 INFO [stderr] warning: unused import: `H512`
Dec 18 17:05:45.768 INFO [stderr]   --> examples/eth_connect.rs:29:26
Dec 18 17:05:45.768 INFO [stderr]    |
Dec 18 17:05:45.768 INFO [stderr] 29 | use bigint::{H256, U256, H512};
Dec 18 17:05:45.768 INFO [stderr]    |                          ^^^^
Dec 18 17:05:45.768 INFO [stderr] 
Dec 18 17:05:45.768 INFO [stderr] warning: unused import: `Header`
Dec 18 17:05:45.768 INFO [stderr]   --> examples/eth_connect.rs:32:13
Dec 18 17:05:45.768 INFO [stderr]    |
Dec 18 17:05:45.768 INFO [stderr] 32 | use block::{Header, Block};
Dec 18 17:05:45.768 INFO [stderr]    |             ^^^^^^
Dec 18 17:05:45.768 INFO [stderr] 
Dec 18 17:05:45.896 INFO [stderr] warning: use of deprecated item 'futures::Future::boxed': removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228
Dec 18 17:05:45.896 INFO [stderr]    --> examples/eth_connect.rs:113:59
Dec 18 17:05:45.896 INFO [stderr]     |
Dec 18 17:05:45.896 INFO [stderr] 113 |     let mut timeout = Timeout::new(dur, &handle).unwrap().boxed();
Dec 18 17:05:45.896 INFO [stderr]     |                                                           ^^^^^
Dec 18 17:05:45.897 INFO [stderr]     |
Dec 18 17:05:45.897 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 18 17:05:45.897 INFO [stderr] 
Dec 18 17:05:45.897 INFO [stderr] warning: use of deprecated item 'futures::Future::boxed': removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228
Dec 18 17:05:45.897 INFO [stderr]    --> examples/eth_connect.rs:128:29
Dec 18 17:05:45.897 INFO [stderr]     |
Dec 18 17:05:45.897 INFO [stderr] 128 |                 timeout = t.boxed();
Dec 18 17:05:45.897 INFO [stderr]     |                             ^^^^^
Dec 18 17:05:45.897 INFO [stderr] 
Dec 18 17:05:45.897 INFO [stderr] warning: use of deprecated item 'futures::Future::boxed': removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228
Dec 18 17:05:45.897 INFO [stderr]    --> examples/eth_connect.rs:145:63
Dec 18 17:05:45.897 INFO [stderr]     |
Dec 18 17:05:45.897 INFO [stderr] 145 |                 timeout = Timeout::new(dur, &handle).unwrap().boxed();
Dec 18 17:05:45.897 INFO [stderr]     |                                                               ^^^^^
Dec 18 17:05:45.897 INFO [stderr] 
Dec 18 17:05:45.950 INFO [stderr] warning: use of deprecated item 'futures::Future::boxed': removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228
Dec 18 17:05:45.950 INFO [stderr]    --> examples/eth_connect.rs:226:71
Dec 18 17:05:45.950 INFO [stderr]     |
Dec 18 17:05:45.950 INFO [stderr] 226 |                         timeout = Timeout::new(dur, &handle).unwrap().boxed();
Dec 18 17:05:45.950 INFO [stderr]     |                                                                       ^^^^^
Dec 18 17:05:45.950 INFO [stderr] 
Dec 18 17:05:46.009 INFO [stderr] warning: variable `best_number` is assigned to, but never used
Dec 18 17:05:46.010 INFO [stderr]    --> examples/eth_connect.rs:103:13
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr] 103 |     let mut best_number: U256 = U256::zero();
Dec 18 17:05:46.010 INFO [stderr]     |             ^^^^^^^^^^^
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 17:05:46.010 INFO [stderr]     = note: consider using `_best_number` instead
Dec 18 17:05:46.010 INFO [stderr] 
Dec 18 17:05:46.010 INFO [stderr] warning: unused variable: `when`
Dec 18 17:05:46.010 INFO [stderr]    --> examples/eth_connect.rs:109:13
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr] 109 |     let mut when = Instant::now() + dur;
Dec 18 17:05:46.010 INFO [stderr]     |             ^^^^ help: consider using `_when` instead
Dec 18 17:05:46.010 INFO [stderr] 
Dec 18 17:05:46.010 INFO [stderr] warning: unused variable: `version`
Dec 18 17:05:46.010 INFO [stderr]    --> examples/eth_connect.rs:158:29
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr] 158 |                 node, data, version
Dec 18 17:05:46.010 INFO [stderr]     |                             ^^^^^^^ help: try ignoring the field: `version: _`
Dec 18 17:05:46.010 INFO [stderr] 
Dec 18 17:05:46.010 INFO [stderr] warning: unused variable: `max_headers`
Dec 18 17:05:46.010 INFO [stderr]    --> examples/eth_connect.rs:168:33
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr] 168 |                         number, max_headers, skip, reverse
Dec 18 17:05:46.010 INFO [stderr]     |                                 ^^^^^^^^^^^ help: try ignoring the field: `max_headers: _`
Dec 18 17:05:46.010 INFO [stderr] 
Dec 18 17:05:46.010 INFO [stderr] warning: unused variable: `skip`
Dec 18 17:05:46.010 INFO [stderr]    --> examples/eth_connect.rs:168:46
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr] 168 |                         number, max_headers, skip, reverse
Dec 18 17:05:46.010 INFO [stderr]     |                                              ^^^^ help: try ignoring the field: `skip: _`
Dec 18 17:05:46.010 INFO [stderr] 
Dec 18 17:05:46.010 INFO [stderr] warning: unused variable: `reverse`
Dec 18 17:05:46.010 INFO [stderr]    --> examples/eth_connect.rs:168:52
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr] 168 |                         number, max_headers, skip, reverse
Dec 18 17:05:46.010 INFO [stderr]     |                                                    ^^^^^^^ help: try ignoring the field: `reverse: _`
Dec 18 17:05:46.010 INFO [stderr] 
Dec 18 17:05:46.010 INFO [stderr] warning: unused variable: `max_headers`
Dec 18 17:05:46.010 INFO [stderr]    --> examples/eth_connect.rs:188:31
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr] 188 |                         hash, max_headers, skip, reverse
Dec 18 17:05:46.010 INFO [stderr]     |                               ^^^^^^^^^^^ help: try ignoring the field: `max_headers: _`
Dec 18 17:05:46.010 INFO [stderr] 
Dec 18 17:05:46.010 INFO [stderr] warning: unused variable: `skip`
Dec 18 17:05:46.010 INFO [stderr]    --> examples/eth_connect.rs:188:44
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr] 188 |                         hash, max_headers, skip, reverse
Dec 18 17:05:46.010 INFO [stderr]     |                                            ^^^^ help: try ignoring the field: `skip: _`
Dec 18 17:05:46.010 INFO [stderr] 
Dec 18 17:05:46.010 INFO [stderr] warning: unused variable: `reverse`
Dec 18 17:05:46.010 INFO [stderr]    --> examples/eth_connect.rs:188:50
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr] 188 |                         hash, max_headers, skip, reverse
Dec 18 17:05:46.010 INFO [stderr]     |                                                  ^^^^^^^ help: try ignoring the field: `reverse: _`
Dec 18 17:05:46.010 INFO [stderr] 
Dec 18 17:05:46.010 INFO [stderr] warning: value assigned to `best_number` is never read
Dec 18 17:05:46.010 INFO [stderr]    --> examples/eth_connect.rs:211:37
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr] 211 |                                     best_number = header.number;
Dec 18 17:05:46.010 INFO [stderr]     |                                     ^^^^^^^^^^^
Dec 18 17:05:46.010 INFO [stderr]     |
Dec 18 17:05:46.010 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 18 17:05:46.010 INFO [stderr] 
Dec 18 17:05:46.043 INFO [stderr] warning: variable does not need to be mutable
Dec 18 17:05:46.048 INFO [stderr]   --> examples/eth_connect.rs:86:9
Dec 18 17:05:46.048 INFO [stderr]    |
Dec 18 17:05:46.048 INFO [stderr] 86 |     let mut client = ETHStream::new(
Dec 18 17:05:46.048 INFO [stderr]    |         ----^^^^^^
Dec 18 17:05:46.048 INFO [stderr]    |         |
Dec 18 17:05:46.048 INFO [stderr]    |         help: remove this `mut`
Dec 18 17:05:46.048 INFO [stderr]    |
Dec 18 17:05:46.048 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 17:05:46.048 INFO [stderr] 
Dec 18 17:05:46.048 INFO [stderr] warning: variable does not need to be mutable
Dec 18 17:05:46.048 INFO [stderr]    --> examples/eth_connect.rs:105:9
Dec 18 17:05:46.048 INFO [stderr]     |
Dec 18 17:05:46.048 INFO [stderr] 105 |     let mut got_bodies_for_current = true;
Dec 18 17:05:46.048 INFO [stderr]     |         ----^^^^^^^^^^^^^^^^^^^^^^
Dec 18 17:05:46.048 INFO [stderr]     |         |
Dec 18 17:05:46.048 INFO [stderr]     |         help: remove this `mut`
Dec 18 17:05:46.048 INFO [stderr] 
Dec 18 17:05:46.048 INFO [stderr] warning: variable does not need to be mutable
Dec 18 17:05:46.048 INFO [stderr]    --> examples/eth_connect.rs:109:9
Dec 18 17:05:46.048 INFO [stderr]     |
Dec 18 17:05:46.048 INFO [stderr] 109 |     let mut when = Instant::now() + dur;
Dec 18 17:05:46.048 INFO [stderr]     |         ----^^^^
Dec 18 17:05:46.048 INFO [stderr]     |         |
Dec 18 17:05:46.048 INFO [stderr]     |         help: remove this `mut`
Dec 18 17:05:46.048 INFO [stderr] 
Dec 18 17:05:46.048 INFO [stderr] warning: variable does not need to be mutable
Dec 18 17:05:46.048 INFO [stderr]    --> examples/eth_connect.rs:111:29
Dec 18 17:05:46.048 INFO [stderr]     |
Dec 18 17:05:46.048 INFO [stderr] 111 |     let (mut client_sender, mut client_receiver) = client.split();
Dec 18 17:05:46.048 INFO [stderr]     |                             ----^^^^^^^^^^^^^^^
Dec 18 17:05:46.048 INFO [stderr]     |                             |
Dec 18 17:05:46.048 INFO [stderr]     |                             help: remove this `mut`
Dec 18 17:05:46.048 INFO [stderr] 
Dec 18 17:05:46.048 INFO [stderr] warning: constant item is never used: `NETWORK_ID`
Dec 18 17:05:46.048 INFO [stderr]   --> examples/eth_connect.rs:37:1
Dec 18 17:05:46.048 INFO [stderr]    |
Dec 18 17:05:46.048 INFO [stderr] 37 | const NETWORK_ID: usize = 1;
Dec 18 17:05:46.049 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 17:05:46.049 INFO [stderr]    |
Dec 18 17:05:46.049 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 17:05:46.049 INFO [stderr] 
Dec 18 17:05:46.049 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 17:05:46.049 INFO [stderr]   --> examples/eth_connect.rs:78:5
Dec 18 17:05:46.049 INFO [stderr]    |
Dec 18 17:05:46.049 INFO [stderr] 78 |     env_logger::init();
Dec 18 17:05:46.049 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 18 17:05:46.049 INFO [stderr]    |
Dec 18 17:05:46.049 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 17:05:46.049 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 17:05:46.049 INFO [stderr] 
Dec 18 17:05:46.124 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.67s
Dec 18 17:05:46.984 INFO running `"docker" "inspect" "265d57d879c55399775249bae62116cdc6c944e88ba845fdb66f2ba7125f22c0"`
Dec 18 17:05:47.296 INFO running `"docker" "rm" "-f" "265d57d879c55399775249bae62116cdc6c944e88ba845fdb66f2ba7125f22c0"`
Dec 18 17:05:47.548 INFO [stdout] 265d57d879c55399775249bae62116cdc6c944e88ba845fdb66f2ba7125f22c0