Dec 04 14:24:09.184 INFO checking mattyw/rust-udp-play against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 14:24:09.184 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 14:24:09.732 INFO [stdout] 75817e3d042cdf459e958b4a0e94d18e02a05c190e794ed537af8589b05212d5
Dec 04 14:24:09.735 INFO running `"docker" "start" "-a" "75817e3d042cdf459e958b4a0e94d18e02a05c190e794ed537af8589b05212d5"`
Dec 04 14:24:11.391 INFO [stderr] usermod: no changes
Dec 04 14:24:11.471 INFO [stderr]     Checking hello v0.1.0 (/source)
Dec 04 14:24:11.948 INFO [stderr] warning: unused imports: `Receiver`, `Sender`
Dec 04 14:24:11.949 INFO [stderr]  --> src/main.rs:3:23
Dec 04 14:24:11.949 INFO [stderr]   |
Dec 04 14:24:11.949 INFO [stderr] 3 | use std::sync::mpsc::{Sender, Receiver};
Dec 04 14:24:11.951 INFO [stderr]   |                       ^^^^^^  ^^^^^^^^
Dec 04 14:24:11.951 INFO [stderr]   |
Dec 04 14:24:11.951 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 14:24:11.951 INFO [stderr] 
Dec 04 14:24:11.951 INFO [stderr] warning: unused import: `std::sync::mpsc`
Dec 04 14:24:11.951 INFO [stderr]  --> src/main.rs:4:5
Dec 04 14:24:11.951 INFO [stderr]   |
Dec 04 14:24:11.951 INFO [stderr] 4 | use std::sync::mpsc;
Dec 04 14:24:11.951 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 04 14:24:11.951 INFO [stderr] 
Dec 04 14:24:12.077 INFO [stderr] warning: unused variable: `i`
Dec 04 14:24:12.078 INFO [stderr]   --> src/main.rs:38:9
Dec 04 14:24:12.079 INFO [stderr]    |
Dec 04 14:24:12.079 INFO [stderr] 38 |     for i in 0..50 {
Dec 04 14:24:12.079 INFO [stderr]    |         ^ help: consider using `_i` instead
Dec 04 14:24:12.079 INFO [stderr]    |
Dec 04 14:24:12.079 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 14:24:12.079 INFO [stderr] 
Dec 04 14:24:12.079 INFO [stderr] warning: unused variable: `listen_on`
Dec 04 14:24:12.079 INFO [stderr]   --> src/main.rs:37:52
Dec 04 14:24:12.079 INFO [stderr]    |
Dec 04 14:24:12.079 INFO [stderr] 37 | fn listen(server_name: &str, sock: net::UdpSocket, listen_on: net::SocketAddr) {
Dec 04 14:24:12.079 INFO [stderr]    |                                                    ^^^^^^^^^ help: consider using `_listen_on` instead
Dec 04 14:24:12.079 INFO [stderr] 
Dec 04 14:24:12.087 INFO [stderr] warning: variable does not need to be mutable
Dec 04 14:24:12.087 INFO [stderr]  --> src/main.rs:8:9
Dec 04 14:24:12.087 INFO [stderr]   |
Dec 04 14:24:12.099 INFO [stderr] 8 |     let mut socket;
Dec 04 14:24:12.099 INFO [stderr]   |         ----^^^^^^
Dec 04 14:24:12.099 INFO [stderr]   |         |
Dec 04 14:24:12.099 INFO [stderr]   |         help: remove this `mut`
Dec 04 14:24:12.099 INFO [stderr]   |
Dec 04 14:24:12.099 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 04 14:24:12.099 INFO [stderr] 
Dec 04 14:24:12.100 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 14:24:12.100 INFO [stderr]   --> src/main.rs:44:5
Dec 04 14:24:12.100 INFO [stderr]    |
Dec 04 14:24:12.100 INFO [stderr] 44 |     sock.send_to(&msg, addr);
Dec 04 14:24:12.100 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:24:12.100 INFO [stderr]    |
Dec 04 14:24:12.100 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 14:24:12.100 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 14:24:12.100 INFO [stderr] 
Dec 04 14:24:12.190 INFO [stderr] warning: unused imports: `Receiver`, `Sender`
Dec 04 14:24:12.190 INFO [stderr]  --> src/main.rs:3:23
Dec 04 14:24:12.190 INFO [stderr]   |
Dec 04 14:24:12.190 INFO [stderr] 3 | use std::sync::mpsc::{Sender, Receiver};
Dec 04 14:24:12.190 INFO [stderr]   |                       ^^^^^^  ^^^^^^^^
Dec 04 14:24:12.190 INFO [stderr]   |
Dec 04 14:24:12.190 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 14:24:12.190 INFO [stderr] 
Dec 04 14:24:12.190 INFO [stderr] warning: unused import: `std::sync::mpsc`
Dec 04 14:24:12.190 INFO [stderr]  --> src/main.rs:4:5
Dec 04 14:24:12.190 INFO [stderr]   |
Dec 04 14:24:12.190 INFO [stderr] 4 | use std::sync::mpsc;
Dec 04 14:24:12.190 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 04 14:24:12.190 INFO [stderr] 
Dec 04 14:24:12.284 INFO [stderr] warning: unused variable: `i`
Dec 04 14:24:12.284 INFO [stderr]   --> src/main.rs:38:9
Dec 04 14:24:12.284 INFO [stderr]    |
Dec 04 14:24:12.284 INFO [stderr] 38 |     for i in 0..50 {
Dec 04 14:24:12.284 INFO [stderr]    |         ^ help: consider using `_i` instead
Dec 04 14:24:12.284 INFO [stderr]    |
Dec 04 14:24:12.284 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 14:24:12.284 INFO [stderr] 
Dec 04 14:24:12.284 INFO [stderr] warning: unused variable: `listen_on`
Dec 04 14:24:12.284 INFO [stderr]   --> src/main.rs:37:52
Dec 04 14:24:12.284 INFO [stderr]    |
Dec 04 14:24:12.284 INFO [stderr] 37 | fn listen(server_name: &str, sock: net::UdpSocket, listen_on: net::SocketAddr) {
Dec 04 14:24:12.284 INFO [stderr]    |                                                    ^^^^^^^^^ help: consider using `_listen_on` instead
Dec 04 14:24:12.284 INFO [stderr] 
Dec 04 14:24:12.291 INFO [stderr] warning: variable does not need to be mutable
Dec 04 14:24:12.291 INFO [stderr]  --> src/main.rs:8:9
Dec 04 14:24:12.291 INFO [stderr]   |
Dec 04 14:24:12.291 INFO [stderr] 8 |     let mut socket;
Dec 04 14:24:12.291 INFO [stderr]   |         ----^^^^^^
Dec 04 14:24:12.291 INFO [stderr]   |         |
Dec 04 14:24:12.291 INFO [stderr]   |         help: remove this `mut`
Dec 04 14:24:12.291 INFO [stderr]   |
Dec 04 14:24:12.291 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 04 14:24:12.291 INFO [stderr] 
Dec 04 14:24:12.303 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 14:24:12.303 INFO [stderr]   --> src/main.rs:44:5
Dec 04 14:24:12.303 INFO [stderr]    |
Dec 04 14:24:12.303 INFO [stderr] 44 |     sock.send_to(&msg, addr);
Dec 04 14:24:12.303 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:24:12.303 INFO [stderr]    |
Dec 04 14:24:12.303 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 14:24:12.303 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 14:24:12.303 INFO [stderr] 
Dec 04 14:24:12.329 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
Dec 04 14:24:12.331 INFO [stderr] su: No module specific data is present
Dec 04 14:24:13.176 INFO running `"docker" "inspect" "75817e3d042cdf459e958b4a0e94d18e02a05c190e794ed537af8589b05212d5"`
Dec 04 14:24:13.507 INFO running `"docker" "rm" "-f" "75817e3d042cdf459e958b4a0e94d18e02a05c190e794ed537af8589b05212d5"`
Dec 04 14:24:13.811 INFO [stdout] 75817e3d042cdf459e958b4a0e94d18e02a05c190e794ed537af8589b05212d5