Dec 17 12:19:17.515 INFO checking vwxyzjn/hello_cargo against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 12:19:17.516 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/vwxyzjn/hello_cargo:/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 17 12:19:18.048 INFO [stdout] 694f4be1fa92382da7fb9b20d14b31daf75d34e5e3f88c5426d082ad8ac72a2c
Dec 17 12:19:18.055 INFO running `"docker" "start" "-a" "694f4be1fa92382da7fb9b20d14b31daf75d34e5e3f88c5426d082ad8ac72a2c"`
Dec 17 12:19:19.962 INFO [stderr]     Checking rand v0.3.20
Dec 17 12:19:21.356 INFO [stderr]     Checking hello_cargo v0.1.0 (/opt/crater/workdir)
Dec 17 12:19:21.508 INFO [stderr] warning: unused import: `std::io`
Dec 17 12:19:21.508 INFO [stderr]  --> src/main.rs:1:5
Dec 17 12:19:21.509 INFO [stderr]   |
Dec 17 12:19:21.509 INFO [stderr] 1 | use std::io;
Dec 17 12:19:21.509 INFO [stderr]   |     ^^^^^^^
Dec 17 12:19:21.509 INFO [stderr]   |
Dec 17 12:19:21.509 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 12:19:21.509 INFO [stderr] 
Dec 17 12:19:21.575 INFO [stderr] warning: unused import: `std::io`
Dec 17 12:19:21.575 INFO [stderr]  --> src/main.rs:1:5
Dec 17 12:19:21.575 INFO [stderr]   |
Dec 17 12:19:21.575 INFO [stderr] 1 | use std::io;
Dec 17 12:19:21.575 INFO [stderr]   |     ^^^^^^^
Dec 17 12:19:21.575 INFO [stderr]   |
Dec 17 12:19:21.575 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 12:19:21.575 INFO [stderr] 
Dec 17 12:19:21.732 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.81s
Dec 17 12:19:23.425 INFO running `"docker" "inspect" "694f4be1fa92382da7fb9b20d14b31daf75d34e5e3f88c5426d082ad8ac72a2c"`
Dec 17 12:19:23.754 INFO running `"docker" "rm" "-f" "694f4be1fa92382da7fb9b20d14b31daf75d34e5e3f88c5426d082ad8ac72a2c"`
Dec 17 12:19:24.092 INFO [stdout] 694f4be1fa92382da7fb9b20d14b31daf75d34e5e3f88c5426d082ad8ac72a2c