Dec 05 06:52:45.920 INFO checking serial-0.4.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 06:52:45.920 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 06:52:46.136 INFO [stdout] cdd11bcb5074aca6fa8e70f0039b518af5a13d54cbbd0be968dd1735d11a4619
Dec 05 06:52:46.138 INFO running `"docker" "start" "-a" "cdd11bcb5074aca6fa8e70f0039b518af5a13d54cbbd0be968dd1735d11a4619"`
Dec 05 06:52:47.181 INFO [stderr] usermod: no changes
Dec 05 06:52:47.242 INFO [stderr]     Checking serial v0.4.0 (/source)
Dec 05 06:52:49.104 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 05 06:52:49.104 INFO [stderr]  --> examples/read_write.rs:6:5
Dec 05 06:52:49.104 INFO [stderr]   |
Dec 05 06:52:49.104 INFO [stderr] 6 | use std::io::prelude::*;
Dec 05 06:52:49.104 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 05 06:52:49.104 INFO [stderr]   |
Dec 05 06:52:49.104 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 06:52:49.104 INFO [stderr] 
Dec 05 06:52:49.146 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.94s
Dec 05 06:52:49.147 INFO [stderr] su: No module specific data is present
Dec 05 06:52:49.523 INFO running `"docker" "inspect" "cdd11bcb5074aca6fa8e70f0039b518af5a13d54cbbd0be968dd1735d11a4619"`
Dec 05 06:52:49.620 INFO running `"docker" "rm" "-f" "cdd11bcb5074aca6fa8e70f0039b518af5a13d54cbbd0be968dd1735d11a4619"`
Dec 05 06:52:49.737 INFO [stdout] cdd11bcb5074aca6fa8e70f0039b518af5a13d54cbbd0be968dd1735d11a4619