Dec 19 12:55:36.103 INFO checking mattyw/rust-udp-play against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 12:55:36.103 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/mattyw/rust-udp-play:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:55:36.568 INFO [stdout] 581e86c0c3fcbba75980066ec8156d40561e618c18dad812a7b5cebe4715907d
Dec 19 12:55:36.571 INFO running `"docker" "start" "-a" "581e86c0c3fcbba75980066ec8156d40561e618c18dad812a7b5cebe4715907d"`
Dec 19 12:55:38.407 INFO [stderr]     Checking hello v0.1.0 (/opt/crater/workdir)
Dec 19 12:55:38.764 INFO [stderr] warning: unused imports: `Receiver`, `Sender`
Dec 19 12:55:38.764 INFO [stderr]  --> src/main.rs:3:23
Dec 19 12:55:38.764 INFO [stderr]   |
Dec 19 12:55:38.764 INFO [stderr] 3 | use std::sync::mpsc::{Sender, Receiver};
Dec 19 12:55:38.764 INFO [stderr]   |                       ^^^^^^  ^^^^^^^^
Dec 19 12:55:38.764 INFO [stderr] warning: unused imports: `Receiver`, `Sender`
Dec 19 12:55:38.764 INFO [stderr]  --> src/main.rs:3:23
Dec 19 12:55:38.764 INFO [stderr]   |
Dec 19 12:55:38.764 INFO [stderr] 3 | use std::sync::mpsc::{Sender, Receiver};
Dec 19 12:55:38.765 INFO [stderr]   |                       ^^^^^^  ^^^^^^^^
Dec 19 12:55:38.765 INFO [stderr]   |
Dec 19 12:55:38.765 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:55:38.765 INFO [stderr] 
Dec 19 12:55:38.765 INFO [stderr] warning: unused import: `std::sync::mpsc`
Dec 19 12:55:38.765 INFO [stderr]  --> src/main.rs:4:5
Dec 19 12:55:38.765 INFO [stderr]   |
Dec 19 12:55:38.765 INFO [stderr] 4 | use std::sync::mpsc;
Dec 19 12:55:38.765 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 12:55:38.765 INFO [stderr] 
Dec 19 12:55:38.765 INFO [stderr]   |
Dec 19 12:55:38.765 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:55:38.765 INFO [stderr] 
Dec 19 12:55:38.765 INFO [stderr] warning: unused import: `std::sync::mpsc`
Dec 19 12:55:38.765 INFO [stderr]  --> src/main.rs:4:5
Dec 19 12:55:38.765 INFO [stderr]   |
Dec 19 12:55:38.765 INFO [stderr] 4 | use std::sync::mpsc;
Dec 19 12:55:38.765 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 12:55:38.765 INFO [stderr] 
Dec 19 12:55:38.824 INFO [stderr] warning: unused variable: `i`
Dec 19 12:55:38.824 INFO [stderr]   --> src/main.rs:38:9
Dec 19 12:55:38.824 INFO [stderr]    |
Dec 19 12:55:38.824 INFO [stderr] 38 |     for i in 0..50 {
Dec 19 12:55:38.824 INFO [stderr]    |         ^ help: consider using `_i` instead
Dec 19 12:55:38.824 INFO [stderr]    |
Dec 19 12:55:38.824 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:55:38.824 INFO [stderr] 
Dec 19 12:55:38.824 INFO [stderr] warning: unused variable: `listen_on`
Dec 19 12:55:38.824 INFO [stderr]   --> src/main.rs:37:52
Dec 19 12:55:38.824 INFO [stderr]    |
Dec 19 12:55:38.824 INFO [stderr] 37 | fn listen(server_name: &str, sock: net::UdpSocket, listen_on: net::SocketAddr) {
Dec 19 12:55:38.824 INFO [stderr]    |                                                    ^^^^^^^^^ help: consider using `_listen_on` instead
Dec 19 12:55:38.824 INFO [stderr] 
Dec 19 12:55:38.824 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:55:38.825 INFO [stderr]  --> src/main.rs:8:9
Dec 19 12:55:38.825 INFO [stderr]   |
Dec 19 12:55:38.825 INFO [stderr] 8 |     let mut socket;
Dec 19 12:55:38.825 INFO [stderr]   |         ----^^^^^^
Dec 19 12:55:38.825 INFO [stderr]   |         |
Dec 19 12:55:38.825 INFO [stderr]   |         help: remove this `mut`
Dec 19 12:55:38.825 INFO [stderr]   |
Dec 19 12:55:38.825 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 19 12:55:38.825 INFO [stderr] 
Dec 19 12:55:38.848 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:55:38.848 INFO [stderr]   --> src/main.rs:44:5
Dec 19 12:55:38.848 INFO [stderr]    |
Dec 19 12:55:38.848 INFO [stderr] 44 |     sock.send_to(&msg, addr);
Dec 19 12:55:38.848 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:55:38.848 INFO [stderr]    |
Dec 19 12:55:38.848 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:55:38.848 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:55:38.848 INFO [stderr] 
Dec 19 12:55:38.849 INFO [stderr] warning: unused variable: `i`
Dec 19 12:55:38.850 INFO [stderr]   --> src/main.rs:38:9
Dec 19 12:55:38.850 INFO [stderr]    |
Dec 19 12:55:38.850 INFO [stderr] 38 |     for i in 0..50 {
Dec 19 12:55:38.850 INFO [stderr]    |         ^ help: consider using `_i` instead
Dec 19 12:55:38.850 INFO [stderr]    |
Dec 19 12:55:38.856 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:55:38.856 INFO [stderr] 
Dec 19 12:55:38.856 INFO [stderr] warning: unused variable: `listen_on`
Dec 19 12:55:38.856 INFO [stderr]   --> src/main.rs:37:52
Dec 19 12:55:38.856 INFO [stderr]    |
Dec 19 12:55:38.856 INFO [stderr] 37 | fn listen(server_name: &str, sock: net::UdpSocket, listen_on: net::SocketAddr) {
Dec 19 12:55:38.856 INFO [stderr]    |                                                    ^^^^^^^^^ help: consider using `_listen_on` instead
Dec 19 12:55:38.856 INFO [stderr] 
Dec 19 12:55:38.860 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:55:38.860 INFO [stderr]  --> src/main.rs:8:9
Dec 19 12:55:38.860 INFO [stderr]   |
Dec 19 12:55:38.860 INFO [stderr] 8 |     let mut socket;
Dec 19 12:55:38.860 INFO [stderr]   |         ----^^^^^^
Dec 19 12:55:38.860 INFO [stderr]   |         |
Dec 19 12:55:38.860 INFO [stderr]   |         help: remove this `mut`
Dec 19 12:55:38.860 INFO [stderr]   |
Dec 19 12:55:38.860 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 19 12:55:38.860 INFO [stderr] 
Dec 19 12:55:38.881 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:55:38.881 INFO [stderr]   --> src/main.rs:44:5
Dec 19 12:55:38.881 INFO [stderr]    |
Dec 19 12:55:38.881 INFO [stderr] 44 |     sock.send_to(&msg, addr);
Dec 19 12:55:38.881 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:55:38.881 INFO [stderr]    |
Dec 19 12:55:38.881 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:55:38.881 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:55:38.881 INFO [stderr] 
Dec 19 12:55:38.914 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
Dec 19 12:55:40.078 INFO running `"docker" "inspect" "581e86c0c3fcbba75980066ec8156d40561e618c18dad812a7b5cebe4715907d"`
Dec 19 12:55:40.474 INFO running `"docker" "rm" "-f" "581e86c0c3fcbba75980066ec8156d40561e618c18dad812a7b5cebe4715907d"`
Dec 19 12:55:40.816 INFO [stdout] 581e86c0c3fcbba75980066ec8156d40561e618c18dad812a7b5cebe4715907d