Dec 11 05:09:13.202 INFO checking zgotsch/rs-blockchain against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 05:09:13.202 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 05:09:13.854 INFO [stdout] 8fe7c69c9b4be244e998fd961d6892499b567e03633fe9acbed1938733ba18ca
Dec 11 05:09:13.856 INFO running `"docker" "start" "-a" "8fe7c69c9b4be244e998fd961d6892499b567e03633fe9acbed1938733ba18ca"`
Dec 11 05:09:15.368 INFO [stderr] usermod: no changes
Dec 11 05:09:15.524 INFO [stderr]    Compiling gcc v0.3.50
Dec 11 05:09:15.524 INFO [stderr]     Checking libc v0.2.23
Dec 11 05:09:15.524 INFO [stderr]     Checking rustc-serialize v0.3.24
Dec 11 05:09:15.524 INFO [stderr]     Checking byteorder v1.0.0
Dec 11 05:09:15.524 INFO [stderr]     Checking serde v1.0.8
Dec 11 05:09:15.536 INFO [stderr]     Checking num-traits v0.1.37
Dec 11 05:09:15.548 INFO [stderr]    Compiling syn v0.11.11
Dec 11 05:09:17.729 INFO [stderr]     Checking base64 v0.5.2
Dec 11 05:09:20.260 INFO [stderr]     Checking time v0.1.37
Dec 11 05:09:20.260 INFO [stderr]     Checking rand v0.3.15
Dec 11 05:09:24.712 INFO [stderr]    Compiling rust-crypto v0.2.36
Dec 11 05:09:33.338 INFO [stderr]    Compiling serde_derive_internals v0.15.1
Dec 11 05:09:39.030 INFO [stderr]    Compiling serde_derive v1.0.8
Dec 11 05:09:44.672 INFO [stderr]     Checking bincode v0.8.0
Dec 11 05:09:50.920 INFO [stderr]     Checking naivechain-rs v0.1.0 (/source)
Dec 11 05:09:51.940 INFO [stderr] warning: variable does not need to be mutable
Dec 11 05:09:51.940 INFO [stderr]    --> src/block.rs:120:9
Dec 11 05:09:51.940 INFO [stderr]     |
Dec 11 05:09:51.940 INFO [stderr] 120 |     let mut buf = &mut [0; 8];
Dec 11 05:09:51.940 INFO [stderr]     |         ----^^^
Dec 11 05:09:51.940 INFO [stderr]     |         |
Dec 11 05:09:51.940 INFO [stderr]     |         help: remove this `mut`
Dec 11 05:09:51.964 INFO [stderr]     |
Dec 11 05:09:51.964 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 05:09:51.964 INFO [stderr] 
Dec 11 05:09:51.964 INFO [stderr] warning: field is never used: `next_message_size`
Dec 11 05:09:51.964 INFO [stderr]   --> src/connection.rs:11:5
Dec 11 05:09:51.964 INFO [stderr]    |
Dec 11 05:09:51.964 INFO [stderr] 11 |     next_message_size: Option<u64>,
Dec 11 05:09:51.964 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:51.992 INFO [stderr]    |
Dec 11 05:09:51.992 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 05:09:51.992 INFO [stderr] 
Dec 11 05:09:52.092 INFO [stderr] warning: variable does not need to be mutable
Dec 11 05:09:52.092 INFO [stderr]    --> src/block.rs:120:9
Dec 11 05:09:52.092 INFO [stderr]     |
Dec 11 05:09:52.092 INFO [stderr] 120 |     let mut buf = &mut [0; 8];
Dec 11 05:09:52.092 INFO [stderr]     |         ----^^^
Dec 11 05:09:52.092 INFO [stderr]     |         |
Dec 11 05:09:52.092 INFO [stderr]     |         help: remove this `mut`
Dec 11 05:09:52.092 INFO [stderr]     |
Dec 11 05:09:52.092 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 05:09:52.092 INFO [stderr] 
Dec 11 05:09:52.108 INFO [stderr] warning: field is never used: `next_message_size`
Dec 11 05:09:52.108 INFO [stderr]   --> src/connection.rs:11:5
Dec 11 05:09:52.108 INFO [stderr]    |
Dec 11 05:09:52.108 INFO [stderr] 11 |     next_message_size: Option<u64>,
Dec 11 05:09:52.108 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:52.108 INFO [stderr]    |
Dec 11 05:09:52.108 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 05:09:52.108 INFO [stderr] 
Dec 11 05:09:52.560 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 05:09:52.561 INFO [stderr]  --> src/bin/main.rs:3:1
Dec 11 05:09:52.561 INFO [stderr]   |
Dec 11 05:09:52.561 INFO [stderr] 3 | #[macro_use]
Dec 11 05:09:52.561 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 05:09:52.561 INFO [stderr]   |
Dec 11 05:09:52.562 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 05:09:52.562 INFO [stderr] 
Dec 11 05:09:52.562 INFO [stderr] warning: unused import: `std::error::Error`
Dec 11 05:09:52.562 INFO [stderr]   --> src/bin/main.rs:13:5
Dec 11 05:09:52.562 INFO [stderr]    |
Dec 11 05:09:52.563 INFO [stderr] 13 | use std::error::Error;
Dec 11 05:09:52.563 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 11 05:09:52.563 INFO [stderr] 
Dec 11 05:09:52.563 INFO [stderr] warning: unused import: `std::fs::File`
Dec 11 05:09:52.563 INFO [stderr]   --> src/bin/main.rs:14:5
Dec 11 05:09:52.564 INFO [stderr]    |
Dec 11 05:09:52.564 INFO [stderr] 14 | use std::fs::File;
Dec 11 05:09:52.564 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 11 05:09:52.564 INFO [stderr] 
Dec 11 05:09:52.564 INFO [stderr] warning: unused import: `std::path::Path`
Dec 11 05:09:52.565 INFO [stderr]   --> src/bin/main.rs:15:5
Dec 11 05:09:52.565 INFO [stderr]    |
Dec 11 05:09:52.565 INFO [stderr] 15 | use std::path::Path;
Dec 11 05:09:52.565 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 11 05:09:52.565 INFO [stderr] 
Dec 11 05:09:52.566 INFO [stderr] warning: unused import: `std::net::ToSocketAddrs`
Dec 11 05:09:52.566 INFO [stderr]   --> src/bin/main.rs:18:5
Dec 11 05:09:52.566 INFO [stderr]    |
Dec 11 05:09:52.566 INFO [stderr] 18 | use std::net::ToSocketAddrs;
Dec 11 05:09:52.567 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:52.567 INFO [stderr] 
Dec 11 05:09:52.567 INFO [stderr] warning: unused imports: `Infinite`, `serialize`
Dec 11 05:09:52.567 INFO [stderr]   --> src/bin/main.rs:24:15
Dec 11 05:09:52.567 INFO [stderr]    |
Dec 11 05:09:52.568 INFO [stderr] 24 | use bincode::{serialize, deserialize, Infinite};
Dec 11 05:09:52.568 INFO [stderr]    |               ^^^^^^^^^               ^^^^^^^^
Dec 11 05:09:52.568 INFO [stderr] 
Dec 11 05:09:52.736 INFO [stderr] warning: unused import: `TcpStream`
Dec 11 05:09:52.736 INFO [stderr]  --> src/bin/nameserver.rs:1:29
Dec 11 05:09:52.736 INFO [stderr]   |
Dec 11 05:09:52.736 INFO [stderr] 1 | use std::net::{TcpListener, TcpStream, SocketAddr};
Dec 11 05:09:52.736 INFO [stderr]   |                             ^^^^^^^^^
Dec 11 05:09:52.736 INFO [stderr]   |
Dec 11 05:09:52.736 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 05:09:52.736 INFO [stderr] 
Dec 11 05:09:52.736 INFO [stderr] warning: unused import: `std::net::ToSocketAddrs`
Dec 11 05:09:52.736 INFO [stderr]  --> src/bin/nameserver.rs:7:5
Dec 11 05:09:52.736 INFO [stderr]   |
Dec 11 05:09:52.736 INFO [stderr] 7 | use std::net::ToSocketAddrs;
Dec 11 05:09:52.736 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:52.736 INFO [stderr] 
Dec 11 05:09:52.736 INFO [stderr] warning: unused import: `ClientMessage`
Dec 11 05:09:52.736 INFO [stderr]   --> src/bin/nameserver.rs:12:30
Dec 11 05:09:52.736 INFO [stderr]    |
Dec 11 05:09:52.736 INFO [stderr] 12 | use naivechain_rs::message::{ClientMessage, ClientToNameserverMessage, NameserverToClientMessage};
Dec 11 05:09:52.736 INFO [stderr]    |                              ^^^^^^^^^^^^^
Dec 11 05:09:52.736 INFO [stderr] 
Dec 11 05:09:52.848 INFO [stderr] warning: unused import: `TcpStream`
Dec 11 05:09:52.848 INFO [stderr]  --> src/bin/nameserver.rs:1:29
Dec 11 05:09:52.848 INFO [stderr]   |
Dec 11 05:09:52.848 INFO [stderr] 1 | use std::net::{TcpListener, TcpStream, SocketAddr};
Dec 11 05:09:52.848 INFO [stderr]   |                             ^^^^^^^^^
Dec 11 05:09:52.848 INFO [stderr]   |
Dec 11 05:09:52.848 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 05:09:52.848 INFO [stderr] 
Dec 11 05:09:52.848 INFO [stderr] warning: unused import: `std::net::ToSocketAddrs`
Dec 11 05:09:52.848 INFO [stderr]  --> src/bin/nameserver.rs:7:5
Dec 11 05:09:52.848 INFO [stderr]   |
Dec 11 05:09:52.848 INFO [stderr] 7 | use std::net::ToSocketAddrs;
Dec 11 05:09:52.848 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:52.848 INFO [stderr] 
Dec 11 05:09:52.848 INFO [stderr] warning: unused import: `ClientMessage`
Dec 11 05:09:52.848 INFO [stderr]   --> src/bin/nameserver.rs:12:30
Dec 11 05:09:52.848 INFO [stderr]    |
Dec 11 05:09:52.848 INFO [stderr] 12 | use naivechain_rs::message::{ClientMessage, ClientToNameserverMessage, NameserverToClientMessage};
Dec 11 05:09:52.848 INFO [stderr]    |                              ^^^^^^^^^^^^^
Dec 11 05:09:52.848 INFO [stderr] 
Dec 11 05:09:52.904 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 05:09:52.904 INFO [stderr]  --> src/bin/main.rs:3:1
Dec 11 05:09:52.904 INFO [stderr]   |
Dec 11 05:09:52.904 INFO [stderr] 3 | #[macro_use]
Dec 11 05:09:52.904 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 05:09:52.904 INFO [stderr]   |
Dec 11 05:09:52.904 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 05:09:52.904 INFO [stderr] 
Dec 11 05:09:52.904 INFO [stderr] warning: unused import: `std::error::Error`
Dec 11 05:09:52.904 INFO [stderr]   --> src/bin/main.rs:13:5
Dec 11 05:09:52.904 INFO [stderr]    |
Dec 11 05:09:52.904 INFO [stderr] 13 | use std::error::Error;
Dec 11 05:09:52.904 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 11 05:09:52.904 INFO [stderr] 
Dec 11 05:09:52.904 INFO [stderr] warning: unused import: `std::fs::File`
Dec 11 05:09:52.904 INFO [stderr]   --> src/bin/main.rs:14:5
Dec 11 05:09:52.904 INFO [stderr]    |
Dec 11 05:09:52.904 INFO [stderr] 14 | use std::fs::File;
Dec 11 05:09:52.904 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 11 05:09:52.904 INFO [stderr] 
Dec 11 05:09:52.904 INFO [stderr] warning: unused import: `std::path::Path`
Dec 11 05:09:52.904 INFO [stderr]   --> src/bin/main.rs:15:5
Dec 11 05:09:52.904 INFO [stderr]    |
Dec 11 05:09:52.904 INFO [stderr] 15 | use std::path::Path;
Dec 11 05:09:52.904 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 11 05:09:52.904 INFO [stderr] 
Dec 11 05:09:52.904 INFO [stderr] warning: unused import: `std::net::ToSocketAddrs`
Dec 11 05:09:52.904 INFO [stderr]   --> src/bin/main.rs:18:5
Dec 11 05:09:52.904 INFO [stderr]    |
Dec 11 05:09:52.904 INFO [stderr] 18 | use std::net::ToSocketAddrs;
Dec 11 05:09:52.904 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:52.904 INFO [stderr] 
Dec 11 05:09:52.904 INFO [stderr] warning: unused imports: `Infinite`, `serialize`
Dec 11 05:09:52.904 INFO [stderr]   --> src/bin/main.rs:24:15
Dec 11 05:09:52.904 INFO [stderr]    |
Dec 11 05:09:52.904 INFO [stderr] 24 | use bincode::{serialize, deserialize, Infinite};
Dec 11 05:09:52.904 INFO [stderr]    |               ^^^^^^^^^               ^^^^^^^^
Dec 11 05:09:52.904 INFO [stderr] 
Dec 11 05:09:53.008 INFO [stderr] warning: unused import: `std::io::Read`
Dec 11 05:09:53.008 INFO [stderr]  --> src/bin/nameserver.rs:3:5
Dec 11 05:09:53.008 INFO [stderr]   |
Dec 11 05:09:53.008 INFO [stderr] 3 | use std::io::Read;
Dec 11 05:09:53.008 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 11 05:09:53.008 INFO [stderr] 
Dec 11 05:09:53.068 INFO [stderr] warning: unreachable pattern
Dec 11 05:09:53.068 INFO [stderr]    --> src/bin/main.rs:315:21
Dec 11 05:09:53.068 INFO [stderr]     |
Dec 11 05:09:53.068 INFO [stderr] 315 |                     Ok(_) => {println!("Unhandled command");},
Dec 11 05:09:53.068 INFO [stderr]     |                     ^^^^^
Dec 11 05:09:53.080 INFO [stderr] warning: unused import: `std::io::Read`
Dec 11 05:09:53.080 INFO [stderr]  --> src/bin/nameserver.rs:3:5
Dec 11 05:09:53.080 INFO [stderr]   |
Dec 11 05:09:53.080 INFO [stderr] 3 | use std::io::Read;
Dec 11 05:09:53.080 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 11 05:09:53.080 INFO [stderr] 
Dec 11 05:09:53.092 INFO [stderr]     |
Dec 11 05:09:53.092 INFO [stderr]     = note: #[warn(unreachable_patterns)] on by default
Dec 11 05:09:53.092 INFO [stderr] 
Dec 11 05:09:53.232 INFO [stderr] warning: variable does not need to be mutable
Dec 11 05:09:53.232 INFO [stderr]    --> src/bin/main.rs:188:9
Dec 11 05:09:53.232 INFO [stderr]     |
Dec 11 05:09:53.232 INFO [stderr] 188 |     let mut nameserver_stream = TcpStream::connect(nameserver_str).expect("Couldn't connet to nameserver");
Dec 11 05:09:53.232 INFO [stderr]     |         ----^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.232 INFO [stderr]     |         |
Dec 11 05:09:53.232 INFO [stderr]     |         help: remove this `mut`
Dec 11 05:09:53.232 INFO [stderr]     |
Dec 11 05:09:53.232 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 05:09:53.232 INFO [stderr] 
Dec 11 05:09:53.232 INFO [stderr] warning: variable does not need to be mutable
Dec 11 05:09:53.232 INFO [stderr]    --> src/bin/main.rs:206:9
Dec 11 05:09:53.232 INFO [stderr]     |
Dec 11 05:09:53.232 INFO [stderr] 206 |     let mut peers: Arc<Mutex<Vec<Arc<Mutex<Connection>>>>> = Arc::new(Mutex::new(Vec::new()));
Dec 11 05:09:53.232 INFO [stderr]     |         ----^^^^^
Dec 11 05:09:53.232 INFO [stderr]     |         |
Dec 11 05:09:53.232 INFO [stderr]     |         help: remove this `mut`
Dec 11 05:09:53.232 INFO [stderr] 
Dec 11 05:09:53.232 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.232 INFO [stderr]   --> src/bin/main.rs:76:29
Dec 11 05:09:53.232 INFO [stderr]    |
Dec 11 05:09:53.232 INFO [stderr] 76 |                             connection.write_message(&ClientMessage::Chain(chain.clone()));
Dec 11 05:09:53.232 INFO [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.233 INFO [stderr]    |
Dec 11 05:09:53.233 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 05:09:53.246 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.246 INFO [stderr] 
Dec 11 05:09:53.246 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.246 INFO [stderr]   --> src/bin/main.rs:95:33
Dec 11 05:09:53.246 INFO [stderr]    |
Dec 11 05:09:53.246 INFO [stderr] 95 |                                 connection.write_message(&ClientMessage::QueryChain);
Dec 11 05:09:53.246 INFO [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.246 INFO [stderr]    |
Dec 11 05:09:53.246 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.246 INFO [stderr] 
Dec 11 05:09:53.246 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.246 INFO [stderr]    --> src/bin/main.rs:212:5
Dec 11 05:09:53.246 INFO [stderr]     |
Dec 11 05:09:53.246 INFO [stderr] 212 |     nameserver_connection.write_message(&ClientToNameserverMessage::Query);
Dec 11 05:09:53.246 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.246 INFO [stderr]     |
Dec 11 05:09:53.246 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.246 INFO [stderr] 
Dec 11 05:09:53.246 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.246 INFO [stderr]    --> src/bin/main.rs:268:5
Dec 11 05:09:53.246 INFO [stderr]     |
Dec 11 05:09:53.246 INFO [stderr] 268 |     nameserver_connection.write_message(&ClientToNameserverMessage::Inform(my_addr.port()));
Dec 11 05:09:53.246 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.246 INFO [stderr]     |
Dec 11 05:09:53.246 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.246 INFO [stderr] 
Dec 11 05:09:53.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.247 INFO [stderr]    --> src/bin/main.rs:291:33
Dec 11 05:09:53.247 INFO [stderr]     |
Dec 11 05:09:53.247 INFO [stderr] 291 |                                 peer.write_message(&ClientMessage::NewBlock(new_block.clone()));
Dec 11 05:09:53.247 INFO [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.247 INFO [stderr]     |
Dec 11 05:09:53.247 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.247 INFO [stderr] 
Dec 11 05:09:53.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.247 INFO [stderr]    --> src/bin/main.rs:357:5
Dec 11 05:09:53.247 INFO [stderr]     |
Dec 11 05:09:53.247 INFO [stderr] 357 |     repl_thread.join();
Dec 11 05:09:53.247 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.247 INFO [stderr]     |
Dec 11 05:09:53.248 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.248 INFO [stderr] 
Dec 11 05:09:53.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.248 INFO [stderr]    --> src/bin/main.rs:358:5
Dec 11 05:09:53.248 INFO [stderr]     |
Dec 11 05:09:53.249 INFO [stderr] 358 |     listener_thread.join();
Dec 11 05:09:53.249 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.249 INFO [stderr]     |
Dec 11 05:09:53.249 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.249 INFO [stderr] 
Dec 11 05:09:53.402 INFO [stderr] warning: unreachable pattern
Dec 11 05:09:53.402 INFO [stderr]    --> src/bin/main.rs:315:21
Dec 11 05:09:53.402 INFO [stderr]     |
Dec 11 05:09:53.402 INFO [stderr] 315 |                     Ok(_) => {println!("Unhandled command");},
Dec 11 05:09:53.402 INFO [stderr]     |                     ^^^^^
Dec 11 05:09:53.402 INFO [stderr]     |
Dec 11 05:09:53.402 INFO [stderr]     = note: #[warn(unreachable_patterns)] on by default
Dec 11 05:09:53.402 INFO [stderr] 
Dec 11 05:09:53.484 INFO [stderr] warning: variable does not need to be mutable
Dec 11 05:09:53.484 INFO [stderr]    --> src/bin/main.rs:188:9
Dec 11 05:09:53.484 INFO [stderr]     |
Dec 11 05:09:53.484 INFO [stderr] 188 |     let mut nameserver_stream = TcpStream::connect(nameserver_str).expect("Couldn't connet to nameserver");
Dec 11 05:09:53.484 INFO [stderr]     |         ----^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.484 INFO [stderr]     |         |
Dec 11 05:09:53.484 INFO [stderr]     |         help: remove this `mut`
Dec 11 05:09:53.484 INFO [stderr]     |
Dec 11 05:09:53.484 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 05:09:53.484 INFO [stderr] 
Dec 11 05:09:53.484 INFO [stderr] warning: variable does not need to be mutable
Dec 11 05:09:53.484 INFO [stderr]    --> src/bin/main.rs:206:9
Dec 11 05:09:53.484 INFO [stderr]     |
Dec 11 05:09:53.484 INFO [stderr] 206 |     let mut peers: Arc<Mutex<Vec<Arc<Mutex<Connection>>>>> = Arc::new(Mutex::new(Vec::new()));
Dec 11 05:09:53.484 INFO [stderr]     |         ----^^^^^
Dec 11 05:09:53.484 INFO [stderr]     |         |
Dec 11 05:09:53.484 INFO [stderr]     |         help: remove this `mut`
Dec 11 05:09:53.484 INFO [stderr] 
Dec 11 05:09:53.485 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.485 INFO [stderr]   --> src/bin/main.rs:76:29
Dec 11 05:09:53.485 INFO [stderr]    |
Dec 11 05:09:53.485 INFO [stderr] 76 |                             connection.write_message(&ClientMessage::Chain(chain.clone()));
Dec 11 05:09:53.485 INFO [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.485 INFO [stderr]    |
Dec 11 05:09:53.485 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 05:09:53.485 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.485 INFO [stderr] 
Dec 11 05:09:53.485 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.485 INFO [stderr]   --> src/bin/main.rs:95:33
Dec 11 05:09:53.485 INFO [stderr]    |
Dec 11 05:09:53.485 INFO [stderr] 95 |                                 connection.write_message(&ClientMessage::QueryChain);
Dec 11 05:09:53.485 INFO [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.485 INFO [stderr]    |
Dec 11 05:09:53.485 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.485 INFO [stderr] 
Dec 11 05:09:53.486 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.486 INFO [stderr]    --> src/bin/main.rs:212:5
Dec 11 05:09:53.486 INFO [stderr]     |
Dec 11 05:09:53.486 INFO [stderr] 212 |     nameserver_connection.write_message(&ClientToNameserverMessage::Query);
Dec 11 05:09:53.486 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.486 INFO [stderr]     |
Dec 11 05:09:53.486 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.486 INFO [stderr] 
Dec 11 05:09:53.486 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.486 INFO [stderr]    --> src/bin/main.rs:268:5
Dec 11 05:09:53.486 INFO [stderr]     |
Dec 11 05:09:53.486 INFO [stderr] 268 |     nameserver_connection.write_message(&ClientToNameserverMessage::Inform(my_addr.port()));
Dec 11 05:09:53.486 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.486 INFO [stderr]     |
Dec 11 05:09:53.486 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.486 INFO [stderr] 
Dec 11 05:09:53.486 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.486 INFO [stderr]    --> src/bin/main.rs:291:33
Dec 11 05:09:53.486 INFO [stderr]     |
Dec 11 05:09:53.486 INFO [stderr] 291 |                                 peer.write_message(&ClientMessage::NewBlock(new_block.clone()));
Dec 11 05:09:53.486 INFO [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.486 INFO [stderr]     |
Dec 11 05:09:53.486 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.486 INFO [stderr] 
Dec 11 05:09:53.486 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.486 INFO [stderr]    --> src/bin/main.rs:357:5
Dec 11 05:09:53.486 INFO [stderr]     |
Dec 11 05:09:53.486 INFO [stderr] 357 |     repl_thread.join();
Dec 11 05:09:53.486 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.486 INFO [stderr]     |
Dec 11 05:09:53.486 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.486 INFO [stderr] 
Dec 11 05:09:53.486 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:09:53.486 INFO [stderr]    --> src/bin/main.rs:358:5
Dec 11 05:09:53.486 INFO [stderr]     |
Dec 11 05:09:53.486 INFO [stderr] 358 |     listener_thread.join();
Dec 11 05:09:53.486 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:09:53.486 INFO [stderr]     |
Dec 11 05:09:53.487 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:09:53.487 INFO [stderr] 
Dec 11 05:09:53.524 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.12s
Dec 11 05:09:53.537 INFO [stderr] su: No module specific data is present
Dec 11 05:09:55.040 INFO running `"docker" "inspect" "8fe7c69c9b4be244e998fd961d6892499b567e03633fe9acbed1938733ba18ca"`
Dec 11 05:09:55.339 INFO running `"docker" "rm" "-f" "8fe7c69c9b4be244e998fd961d6892499b567e03633fe9acbed1938733ba18ca"`
Dec 11 05:09:55.711 INFO [stdout] 8fe7c69c9b4be244e998fd961d6892499b567e03633fe9acbed1938733ba18ca