Dec 19 15:11:40.931 INFO checking jianingy/blockchain-demo against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 15:11:40.932 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/jianingy/blockchain-demo:/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 15:11:41.136 INFO [stdout] cb74d5cdc97b21e21ada96f3312c46b940c087e8a694b0a7241099624917a522
Dec 19 15:11:41.138 INFO running `"docker" "start" "-a" "cb74d5cdc97b21e21ada96f3312c46b940c087e8a694b0a7241099624917a522"`
Dec 19 15:11:41.908 INFO [stderr]    Compiling backtrace-sys v0.1.19
Dec 19 15:11:41.908 INFO [stderr]     Checking openssl v0.9.24
Dec 19 15:11:41.908 INFO [stderr]     Checking hyper v0.10.13
Dec 19 15:11:48.166 INFO [stderr]     Checking native-tls v0.1.5
Dec 19 15:11:48.822 INFO [stderr]     Checking tokio-tls v0.1.4
Dec 19 15:11:49.953 INFO [stderr]     Checking hyper-tls v0.1.3
Dec 19 15:11:50.123 INFO [stderr]     Checking nickel v0.10.1
Dec 19 15:11:50.593 INFO [stderr]     Checking reqwest v0.8.5
Dec 19 15:11:58.001 INFO [stderr]     Checking backtrace v0.3.8
Dec 19 15:11:58.528 INFO [stderr]     Checking failure v0.1.1
Dec 19 15:11:59.022 INFO [stderr]     Checking blockchain-demo v0.1.0 (/opt/crater/workdir)
Dec 19 15:12:00.524 INFO [stderr] warning: unused imports: `Serialize`, `Serializer`
Dec 19 15:12:00.524 INFO [stderr]  --> src/blockchain.rs:4:18
Dec 19 15:12:00.524 INFO [stderr]   |
Dec 19 15:12:00.524 INFO [stderr] 4 | use serde::ser::{Serialize, Serializer};
Dec 19 15:12:00.524 INFO [stderr]   |                  ^^^^^^^^^  ^^^^^^^^^^
Dec 19 15:12:00.524 INFO [stderr]   |
Dec 19 15:12:00.524 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 15:12:00.524 INFO [stderr] 
Dec 19 15:12:00.534 INFO [stderr] warning: unused imports: `Serialize`, `Serializer`
Dec 19 15:12:00.534 INFO [stderr]  --> src/blockchain.rs:4:18
Dec 19 15:12:00.534 INFO [stderr]   |
Dec 19 15:12:00.534 INFO [stderr] 4 | use serde::ser::{Serialize, Serializer};
Dec 19 15:12:00.534 INFO [stderr]   |                  ^^^^^^^^^  ^^^^^^^^^^
Dec 19 15:12:00.534 INFO [stderr]   |
Dec 19 15:12:00.534 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 15:12:00.534 INFO [stderr] 
Dec 19 15:12:01.077 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.43s
Dec 19 15:12:01.428 INFO running `"docker" "inspect" "cb74d5cdc97b21e21ada96f3312c46b940c087e8a694b0a7241099624917a522"`
Dec 19 15:12:01.557 INFO running `"docker" "rm" "-f" "cb74d5cdc97b21e21ada96f3312c46b940c087e8a694b0a7241099624917a522"`
Dec 19 15:12:01.690 INFO [stdout] cb74d5cdc97b21e21ada96f3312c46b940c087e8a694b0a7241099624917a522