Dec 12 07:43:20.801 INFO checking serial-0.4.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 07:43:20.801 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 07:43:21.019 INFO [stdout] 31799efe3fd0fa50b1e8dcddb7dd56cc9f068a3faaea358fe54313dfb8f6fdf8
Dec 12 07:43:21.022 INFO running `"docker" "start" "-a" "31799efe3fd0fa50b1e8dcddb7dd56cc9f068a3faaea358fe54313dfb8f6fdf8"`
Dec 12 07:43:21.715 INFO [stderr] usermod: no changes
Dec 12 07:43:21.763 INFO [stderr]     Checking ioctl-rs v0.1.6
Dec 12 07:43:21.768 INFO [stderr]     Checking serial-core v0.4.0
Dec 12 07:43:22.295 INFO [stderr]     Checking serial-unix v0.4.0
Dec 12 07:43:22.740 INFO [stderr]     Checking serial v0.4.0 (/source)
Dec 12 07:43:25.026 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 12 07:43:25.026 INFO [stderr]  --> examples/read_write.rs:6:5
Dec 12 07:43:25.026 INFO [stderr]   |
Dec 12 07:43:25.026 INFO [stderr] 6 | use std::io::prelude::*;
Dec 12 07:43:25.026 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 12 07:43:25.026 INFO [stderr]   |
Dec 12 07:43:25.026 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 07:43:25.026 INFO [stderr] 
Dec 12 07:43:25.200 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.47s
Dec 12 07:43:25.203 INFO [stderr] su: No module specific data is present
Dec 12 07:43:25.748 INFO running `"docker" "inspect" "31799efe3fd0fa50b1e8dcddb7dd56cc9f068a3faaea358fe54313dfb8f6fdf8"`
Dec 12 07:43:25.919 INFO running `"docker" "rm" "-f" "31799efe3fd0fa50b1e8dcddb7dd56cc9f068a3faaea358fe54313dfb8f6fdf8"`
Dec 12 07:43:26.039 INFO [stdout] 31799efe3fd0fa50b1e8dcddb7dd56cc9f068a3faaea358fe54313dfb8f6fdf8