[INFO] cloning repository LazyBun/buzzer-server
[INFO] running `"git" "clone" "--bare" "git://github.com/LazyBun/buzzer-server.git" "work/cache/sources/gh/LazyBun/buzzer-server"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/LazyBun/buzzer-server'...
[INFO] running `"git" "clone" "work/cache/sources/gh/LazyBun/buzzer-server" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/LazyBun/buzzer-server"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/LazyBun/buzzer-server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/LazyBun/buzzer-server" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/LazyBun/buzzer-server"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/LazyBun/buzzer-server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 850e08e4b8daea6619c8768e7b713184b916d870
[INFO] sha for GitHub repo LazyBun/buzzer-server: 850e08e4b8daea6619c8768e7b713184b916d870
[INFO] validating manifest of LazyBun/buzzer-server on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of LazyBun/buzzer-server on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing LazyBun/buzzer-server
[INFO] finished frobbing LazyBun/buzzer-server
[INFO] frobbed toml for LazyBun/buzzer-server written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/LazyBun/buzzer-server/Cargo.toml
[INFO] started frobbing LazyBun/buzzer-server
[INFO] finished frobbing LazyBun/buzzer-server
[INFO] frobbed toml for LazyBun/buzzer-server written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/LazyBun/buzzer-server/Cargo.toml
[INFO] crate LazyBun/buzzer-server already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/AndyGauge/rust-local-ip.git`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking LazyBun/buzzer-server against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-6/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/LazyBun/buzzer-server:/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 51a1d3bb3063547c81a195f3e43b8d5f45723f26c75336099952bbb66241b761
[INFO] running `"docker" "start" "-a" "51a1d3bb3063547c81a195f3e43b8d5f45723f26c75336099952bbb66241b761"`
[INFO] [stderr]    Compiling structopt-derive v0.1.1
[INFO] [stderr]     Checking structopt v0.1.1
[INFO] [stderr]     Checking ws v0.7.3
[INFO] [stderr]     Checking local-ip v0.2.0 (https://github.com/AndyGauge/rust-local-ip.git#9bebf333)
[INFO] [stderr]     Checking buzzer-server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `TryRecvError`
[INFO] [stderr]  --> src/main.rs:3:29
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::mpsc::{self, TryRecvError};
[INFO] [stderr]   |                             ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::io::Write;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::Read;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TryRecvError`
[INFO] [stderr]  --> src/main.rs:3:29
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::mpsc::{self, TryRecvError};
[INFO] [stderr]   |                             ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::io::Write;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::Read;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ws`
[INFO] [stderr]   --> src/main.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let ws = thread::spawn(move || {
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_ws`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ws`
[INFO] [stderr]   --> src/main.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let ws = thread::spawn(move || {
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_ws`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:58:33
[INFO] [stderr]    |
[INFO] [stderr] 58 |                                 sender.send(msg);
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:58:33
[INFO] [stderr]    |
[INFO] [stderr] 58 |                                 sender.send(msg);
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.07s
[INFO] running `"docker" "inspect" "51a1d3bb3063547c81a195f3e43b8d5f45723f26c75336099952bbb66241b761"`
[INFO] running `"docker" "rm" "-f" "51a1d3bb3063547c81a195f3e43b8d5f45723f26c75336099952bbb66241b761"`
[INFO] [stdout] 51a1d3bb3063547c81a195f3e43b8d5f45723f26c75336099952bbb66241b761