Dec 18 18:00:55.207 INFO checking bus_writer-0.1.2 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 18:00:55.207 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/bus_writer/0.1.2:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 18:00:55.453 INFO [stdout] 0bd77634cbec735227134d45d20adf5b0d5a432e7fe2b9b237f69113e0e73137
Dec 18 18:00:55.455 INFO running `"docker" "start" "-a" "0bd77634cbec735227134d45d20adf5b0d5a432e7fe2b9b237f69113e0e73137"`
Dec 18 18:00:56.522 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Dec 18 18:00:56.556 INFO [stderr]     Checking atomic-option v0.1.2
Dec 18 18:00:56.905 INFO [stderr]     Checking bus v2.0.1
Dec 18 18:00:57.508 INFO [stderr]     Checking bus_writer v0.1.2 (/opt/crater/workdir)
Dec 18 18:00:58.868 INFO [stderr] warning: unused import: `BufReader`
Dec 18 18:00:58.868 INFO [stderr]  --> examples/simple.rs:4:15
Dec 18 18:00:58.868 INFO [stderr]   |
Dec 18 18:00:58.868 INFO [stderr] 4 | use std::io::{BufReader, Cursor, Read};
Dec 18 18:00:58.868 INFO [stderr]   |               ^^^^^^^^^
Dec 18 18:00:58.868 INFO [stderr]   |
Dec 18 18:00:58.868 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 18:00:58.868 INFO [stderr] 
Dec 18 18:00:58.868 INFO [stderr] warning: unused import: `File`
Dec 18 18:00:58.868 INFO [stderr]  --> examples/simple.rs:5:21
Dec 18 18:00:58.868 INFO [stderr]   |
Dec 18 18:00:58.868 INFO [stderr] 5 | use std::fs::{self, File};
Dec 18 18:00:58.868 INFO [stderr]   |                     ^^^^
Dec 18 18:00:58.868 INFO [stderr] 
Dec 18 18:00:58.922 INFO [stderr] warning: unused import: `Read`
Dec 18 18:00:58.922 INFO [stderr]  --> examples/simple.rs:4:34
Dec 18 18:00:58.922 INFO [stderr]   |
Dec 18 18:00:58.922 INFO [stderr] 4 | use std::io::{BufReader, Cursor, Read};
Dec 18 18:00:58.922 INFO [stderr]   |                                  ^^^^
Dec 18 18:00:58.922 INFO [stderr] 
Dec 18 18:00:59.023 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.51s
Dec 18 18:00:59.698 INFO running `"docker" "inspect" "0bd77634cbec735227134d45d20adf5b0d5a432e7fe2b9b237f69113e0e73137"`
Dec 18 18:00:59.836 INFO running `"docker" "rm" "-f" "0bd77634cbec735227134d45d20adf5b0d5a432e7fe2b9b237f69113e0e73137"`
Dec 18 18:01:00.022 INFO [stdout] 0bd77634cbec735227134d45d20adf5b0d5a432e7fe2b9b237f69113e0e73137