Dec 19 13:21:04.777 INFO checking lux01/synacor against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 13:21:04.777 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/lux01/synacor:/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 13:21:05.212 INFO [stdout] e8f92a3a7291d1448e07be346728f55defb545096c085fdd910ffd5b2afe1736
Dec 19 13:21:05.220 INFO running `"docker" "start" "-a" "e8f92a3a7291d1448e07be346728f55defb545096c085fdd910ffd5b2afe1736"`
Dec 19 13:21:06.749 INFO [stderr]     Checking serde v0.9.6
Dec 19 13:21:06.750 INFO [stderr]     Checking bit-set v0.4.0
Dec 19 13:21:06.750 INFO [stderr]     Checking chan v0.1.18
Dec 19 13:21:06.756 INFO [stderr]    Compiling serde_derive v0.9.6
Dec 19 13:21:08.476 INFO [stderr]     Checking chan-signal v0.2.0
Dec 19 13:21:19.074 INFO [stderr]     Checking serde_json v0.9.5
Dec 19 13:21:20.719 INFO [stderr]     Checking synacor v0.1.0 (/opt/crater/workdir)
Dec 19 13:21:24.348 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 13:21:24.348 INFO [stderr]  --> src/debugger/main.rs:8:1
Dec 19 13:21:24.348 INFO [stderr]   |
Dec 19 13:21:24.349 INFO [stderr] 8 | #[macro_use] extern crate chan;
Dec 19 13:21:24.349 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 13:21:24.349 INFO [stderr]   |
Dec 19 13:21:24.349 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:21:24.349 INFO [stderr] 
Dec 19 13:21:24.488 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 13:21:24.488 INFO [stderr]  --> src/debugger/main.rs:8:1
Dec 19 13:21:24.488 INFO [stderr]   |
Dec 19 13:21:24.489 INFO [stderr] 8 | #[macro_use] extern crate chan;
Dec 19 13:21:24.489 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 13:21:24.489 INFO [stderr]   |
Dec 19 13:21:24.489 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:21:24.489 INFO [stderr] 
Dec 19 13:21:25.356 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.68s
Dec 19 13:21:26.338 INFO running `"docker" "inspect" "e8f92a3a7291d1448e07be346728f55defb545096c085fdd910ffd5b2afe1736"`
Dec 19 13:21:26.664 INFO running `"docker" "rm" "-f" "e8f92a3a7291d1448e07be346728f55defb545096c085fdd910ffd5b2afe1736"`
Dec 19 13:21:26.974 INFO [stdout] e8f92a3a7291d1448e07be346728f55defb545096c085fdd910ffd5b2afe1736