Dec 19 21:45:33.133 INFO checking Takamichi-tsutsumi/pong against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:45:33.133 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 21:45:33.612 INFO [stdout] 3848b80067037de92ef46639c7c3268febc60f62a5864dfe6cb9c503135b55a4
Dec 19 21:45:33.612 INFO running `"docker" "start" "-a" "3848b80067037de92ef46639c7c3268febc60f62a5864dfe6cb9c503135b55a4"`
Dec 19 21:45:34.861 INFO [stderr]     Checking mime v0.2.4
Dec 19 21:45:34.862 INFO [stderr]     Checking num_cpus v1.4.0
Dec 19 21:45:34.862 INFO [stderr]     Checking url v1.4.0
Dec 19 21:45:36.258 INFO [stderr]     Checking hyper v0.10.10
Dec 19 21:45:40.396 INFO [stderr]     Checking pong v0.1.0 (/opt/crater/workdir)
Dec 19 21:45:41.185 INFO [stderr] warning: unused variable: `rx`
Dec 19 21:45:41.186 INFO [stderr]   --> src/main.rs:25:14
Dec 19 21:45:41.186 INFO [stderr]    |
Dec 19 21:45:41.186 INFO [stderr] 25 |     let (tx, rx) = channel();
Dec 19 21:45:41.186 INFO [stderr]    |              ^^ help: consider using `_rx` instead
Dec 19 21:45:41.186 INFO [stderr]    |
Dec 19 21:45:41.186 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 21:45:41.186 INFO [stderr] 
Dec 19 21:45:41.186 INFO [stderr] warning: unused variable: `req`
Dec 19 21:45:41.186 INFO [stderr]   --> src/main.rs:13:22
Dec 19 21:45:41.186 INFO [stderr]    |
Dec 19 21:45:41.186 INFO [stderr] 13 |     fn handle(&self, req: Request, mut res: Response) {
Dec 19 21:45:41.186 INFO [stderr]    |                      ^^^ help: consider using `_req` instead
Dec 19 21:45:41.186 INFO [stderr] 
Dec 19 21:45:41.208 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:45:41.208 INFO [stderr]   --> src/main.rs:13:36
Dec 19 21:45:41.208 INFO [stderr]    |
Dec 19 21:45:41.208 INFO [stderr] 13 |     fn handle(&self, req: Request, mut res: Response) {
Dec 19 21:45:41.208 INFO [stderr]    |                                    ----^^^
Dec 19 21:45:41.208 INFO [stderr]    |                                    |
Dec 19 21:45:41.208 INFO [stderr]    |                                    help: remove this `mut`
Dec 19 21:45:41.208 INFO [stderr]    |
Dec 19 21:45:41.208 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 21:45:41.208 INFO [stderr] 
Dec 19 21:45:41.324 INFO [stderr] warning: unused variable: `rx`
Dec 19 21:45:41.324 INFO [stderr]   --> src/main.rs:25:14
Dec 19 21:45:41.324 INFO [stderr]    |
Dec 19 21:45:41.325 INFO [stderr] 25 |     let (tx, rx) = channel();
Dec 19 21:45:41.325 INFO [stderr]    |              ^^ help: consider using `_rx` instead
Dec 19 21:45:41.325 INFO [stderr]    |
Dec 19 21:45:41.325 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 21:45:41.325 INFO [stderr] 
Dec 19 21:45:41.325 INFO [stderr] warning: unused variable: `req`
Dec 19 21:45:41.325 INFO [stderr]   --> src/main.rs:13:22
Dec 19 21:45:41.325 INFO [stderr]    |
Dec 19 21:45:41.325 INFO [stderr] 13 |     fn handle(&self, req: Request, mut res: Response) {
Dec 19 21:45:41.325 INFO [stderr]    |                      ^^^ help: consider using `_req` instead
Dec 19 21:45:41.325 INFO [stderr] 
Dec 19 21:45:41.354 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:45:41.354 INFO [stderr]   --> src/main.rs:13:36
Dec 19 21:45:41.354 INFO [stderr]    |
Dec 19 21:45:41.354 INFO [stderr] 13 |     fn handle(&self, req: Request, mut res: Response) {
Dec 19 21:45:41.354 INFO [stderr]    |                                    ----^^^
Dec 19 21:45:41.354 INFO [stderr]    |                                    |
Dec 19 21:45:41.354 INFO [stderr]    |                                    help: remove this `mut`
Dec 19 21:45:41.354 INFO [stderr]    |
Dec 19 21:45:41.354 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 21:45:41.354 INFO [stderr] 
Dec 19 21:45:41.413 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.67s
Dec 19 21:45:42.888 INFO running `"docker" "inspect" "3848b80067037de92ef46639c7c3268febc60f62a5864dfe6cb9c503135b55a4"`
Dec 19 21:45:43.272 INFO running `"docker" "rm" "-f" "3848b80067037de92ef46639c7c3268febc60f62a5864dfe6cb9c503135b55a4"`
Dec 19 21:45:43.632 INFO [stdout] 3848b80067037de92ef46639c7c3268febc60f62a5864dfe6cb9c503135b55a4