[INFO] updating cached repository terakun/quoridor_judge
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/terakun/quoridor_judge
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/terakun/quoridor_judge" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/terakun/quoridor_judge"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/terakun/quoridor_judge'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/terakun/quoridor_judge" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/terakun/quoridor_judge"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/terakun/quoridor_judge'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8018ec5c8825a77af2e39e2833e750e4869cb9b7
[INFO] sha for GitHub repo terakun/quoridor_judge: 8018ec5c8825a77af2e39e2833e750e4869cb9b7
[INFO] validating manifest of terakun/quoridor_judge on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of terakun/quoridor_judge on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing terakun/quoridor_judge
[INFO] finished frobbing terakun/quoridor_judge
[INFO] frobbed toml for terakun/quoridor_judge written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/terakun/quoridor_judge/Cargo.toml
[INFO] started frobbing terakun/quoridor_judge
[INFO] finished frobbing terakun/quoridor_judge
[INFO] frobbed toml for terakun/quoridor_judge written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/terakun/quoridor_judge/Cargo.toml
[INFO] crate terakun/quoridor_judge already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking terakun/quoridor_judge against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/terakun/quoridor_judge:/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 89d6bc0c0753180337a41feb5bbd5dfd367340432a4e7492196824206722c75c
[INFO] running `"docker" "start" "-a" "89d6bc0c0753180337a41feb5bbd5dfd367340432a4e7492196824206722c75c"`
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking ws v0.7.9
[INFO] [stderr]     Checking quoridor_judge v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `BufRead`, `BufReader`
[INFO] [stderr]  --> src/websocket.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::{BufRead, BufReader};
[INFO] [stderr]   |               ^^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CloseCode`, `Factory`, `Handler`, `Message`
[INFO] [stderr]   --> src/main.rs:11:10
[INFO] [stderr]    |
[INFO] [stderr] 11 | use ws::{CloseCode, Factory, Handler, Message, Sender};
[INFO] [stderr]    |          ^^^^^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufRead`, `BufReader`
[INFO] [stderr]  --> src/websocket.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::{BufRead, BufReader};
[INFO] [stderr]   |               ^^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CloseCode`, `Factory`, `Handler`, `Message`
[INFO] [stderr]   --> src/main.rs:11:10
[INFO] [stderr]    |
[INFO] [stderr] 11 | use ws::{CloseCode, Factory, Handler, Message, Sender};
[INFO] [stderr]    |          ^^^^^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `out`
[INFO] [stderr]   --> src/websocket.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     out: Sender,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]    --> src/main.rs:476:5
[INFO] [stderr]     |
[INFO] [stderr] 476 |     name: String,
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `out`
[INFO] [stderr]   --> src/websocket.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     out: Sender,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]    --> src/main.rs:476:5
[INFO] [stderr]     |
[INFO] [stderr] 476 |     name: String,
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.81s
[INFO] running `"docker" "inspect" "89d6bc0c0753180337a41feb5bbd5dfd367340432a4e7492196824206722c75c"`
[INFO] running `"docker" "rm" "-f" "89d6bc0c0753180337a41feb5bbd5dfd367340432a4e7492196824206722c75c"`
[INFO] [stdout] 89d6bc0c0753180337a41feb5bbd5dfd367340432a4e7492196824206722c75c