Dec 18 05:18:01.254 INFO checking Takamichi-tsutsumi/pong against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 05:18:01.255 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/Takamichi-tsutsumi/pong:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 05:18:01.477 INFO [stdout] 5cc9fa21f9e80bcef6dec04c5ba359f9421da7ac0a13e30667b26536bb5f3cf2
Dec 18 05:18:01.479 INFO running `"docker" "start" "-a" "5cc9fa21f9e80bcef6dec04c5ba359f9421da7ac0a13e30667b26536bb5f3cf2"`
Dec 18 05:18:02.376 INFO [stderr]     Checking unicode-bidi v0.3.2
Dec 18 05:18:02.376 INFO [stderr]     Checking mime v0.2.4
Dec 18 05:18:03.039 INFO [stderr]     Checking idna v0.1.2
Dec 18 05:18:04.628 INFO [stderr]     Checking url v1.4.0
Dec 18 05:18:05.893 INFO [stderr]     Checking hyper v0.10.10
Dec 18 05:18:09.055 INFO [stderr]     Checking pong v0.1.0 (/opt/crater/workdir)
Dec 18 05:18:09.293 INFO [stderr] warning: unused variable: `rx`
Dec 18 05:18:09.293 INFO [stderr]   --> src/main.rs:25:14
Dec 18 05:18:09.293 INFO [stderr]    |
Dec 18 05:18:09.293 INFO [stderr] 25 |     let (tx, rx) = channel();
Dec 18 05:18:09.293 INFO [stderr]    |              ^^ help: consider using `_rx` instead
Dec 18 05:18:09.293 INFO [stderr]    |
Dec 18 05:18:09.293 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 05:18:09.293 INFO [stderr] 
Dec 18 05:18:09.293 INFO [stderr] warning: unused variable: `req`
Dec 18 05:18:09.293 INFO [stderr]   --> src/main.rs:13:22
Dec 18 05:18:09.293 INFO [stderr]    |
Dec 18 05:18:09.293 INFO [stderr] 13 |     fn handle(&self, req: Request, mut res: Response) {
Dec 18 05:18:09.293 INFO [stderr]    |                      ^^^ help: consider using `_req` instead
Dec 18 05:18:09.293 INFO [stderr] 
Dec 18 05:18:09.306 INFO [stderr] warning: variable does not need to be mutable
Dec 18 05:18:09.306 INFO [stderr]   --> src/main.rs:13:36
Dec 18 05:18:09.306 INFO [stderr]    |
Dec 18 05:18:09.306 INFO [stderr] 13 |     fn handle(&self, req: Request, mut res: Response) {
Dec 18 05:18:09.306 INFO [stderr]    |                                    ----^^^
Dec 18 05:18:09.306 INFO [stderr]    |                                    |
Dec 18 05:18:09.306 INFO [stderr]    |                                    help: remove this `mut`
Dec 18 05:18:09.306 INFO [stderr]    |
Dec 18 05:18:09.306 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 05:18:09.306 INFO [stderr] 
Dec 18 05:18:09.433 INFO [stderr] warning: unused variable: `rx`
Dec 18 05:18:09.433 INFO [stderr]   --> src/main.rs:25:14
Dec 18 05:18:09.433 INFO [stderr]    |
Dec 18 05:18:09.433 INFO [stderr] 25 |     let (tx, rx) = channel();
Dec 18 05:18:09.433 INFO [stderr]    |              ^^ help: consider using `_rx` instead
Dec 18 05:18:09.433 INFO [stderr]    |
Dec 18 05:18:09.433 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 05:18:09.433 INFO [stderr] 
Dec 18 05:18:09.433 INFO [stderr] warning: unused variable: `req`
Dec 18 05:18:09.433 INFO [stderr]   --> src/main.rs:13:22
Dec 18 05:18:09.433 INFO [stderr]    |
Dec 18 05:18:09.433 INFO [stderr] 13 |     fn handle(&self, req: Request, mut res: Response) {
Dec 18 05:18:09.433 INFO [stderr]    |                      ^^^ help: consider using `_req` instead
Dec 18 05:18:09.433 INFO [stderr] 
Dec 18 05:18:09.446 INFO [stderr] warning: variable does not need to be mutable
Dec 18 05:18:09.447 INFO [stderr]   --> src/main.rs:13:36
Dec 18 05:18:09.447 INFO [stderr]    |
Dec 18 05:18:09.447 INFO [stderr] 13 |     fn handle(&self, req: Request, mut res: Response) {
Dec 18 05:18:09.447 INFO [stderr]    |                                    ----^^^
Dec 18 05:18:09.447 INFO [stderr]    |                                    |
Dec 18 05:18:09.447 INFO [stderr]    |                                    help: remove this `mut`
Dec 18 05:18:09.447 INFO [stderr]    |
Dec 18 05:18:09.447 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 05:18:09.447 INFO [stderr] 
Dec 18 05:18:09.463 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.21s
Dec 18 05:18:09.757 INFO running `"docker" "inspect" "5cc9fa21f9e80bcef6dec04c5ba359f9421da7ac0a13e30667b26536bb5f3cf2"`
Dec 18 05:18:09.823 INFO running `"docker" "rm" "-f" "5cc9fa21f9e80bcef6dec04c5ba359f9421da7ac0a13e30667b26536bb5f3cf2"`
Dec 18 05:18:09.893 INFO [stdout] 5cc9fa21f9e80bcef6dec04c5ba359f9421da7ac0a13e30667b26536bb5f3cf2