Dec 19 14:54:06.455 INFO checking jroesch/mu against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 14:54:06.455 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/jroesch/mu:/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 14:54:06.676 INFO [stdout] 3fa8a6110b3f4dd4bbf8475831cd99af1c9ada9ec9bbde5bf2787e8d13ed485c
Dec 19 14:54:06.678 INFO running `"docker" "start" "-a" "3fa8a6110b3f4dd4bbf8475831cd99af1c9ada9ec9bbde5bf2787e8d13ed485c"`
Dec 19 14:54:07.605 INFO [stderr]     Checking topological-sort v0.0.7
Dec 19 14:54:07.607 INFO [stderr]     Checking docopt v0.6.86
Dec 19 14:54:08.718 INFO [stderr]     Checking mu v0.1.1 (/opt/crater/workdir)
Dec 19 14:54:08.844 INFO [stderr] warning: unused import: `std::env`
Dec 19 14:54:08.844 INFO [stderr]  --> src/mu/lib.rs:5:5
Dec 19 14:54:08.844 INFO [stderr]   |
Dec 19 14:54:08.844 INFO [stderr] 5 | use std::env;
Dec 19 14:54:08.844 INFO [stderr]   |     ^^^^^^^^
Dec 19 14:54:08.844 INFO [stderr]   |
Dec 19 14:54:08.844 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 14:54:08.844 INFO [stderr] 
Dec 19 14:54:08.858 INFO [stderr] warning: unused import: `std::env`
Dec 19 14:54:08.858 INFO [stderr]  --> src/mu/lib.rs:5:5
Dec 19 14:54:08.858 INFO [stderr]   |
Dec 19 14:54:08.858 INFO [stderr] 5 | use std::env;
Dec 19 14:54:08.858 INFO [stderr]   |     ^^^^^^^^
Dec 19 14:54:08.858 INFO [stderr]   |
Dec 19 14:54:08.858 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 14:54:08.858 INFO [stderr] 
Dec 19 14:54:08.889 INFO [stderr] warning: unused variable: `command`
Dec 19 14:54:08.889 INFO [stderr]   --> src/mu/lib.rs:18:19
Dec 19 14:54:08.889 INFO [stderr]    |
Dec 19 14:54:08.889 INFO [stderr] 18 | pub fn initialize(command: Command) -> Result<(), error::Error> {
Dec 19 14:54:08.889 INFO [stderr]    |                   ^^^^^^^ help: consider using `_command` instead
Dec 19 14:54:08.889 INFO [stderr]    |
Dec 19 14:54:08.889 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 14:54:08.889 INFO [stderr] 
Dec 19 14:54:08.896 INFO [stderr] warning: unused variable: `command`
Dec 19 14:54:08.897 INFO [stderr]   --> src/mu/lib.rs:18:19
Dec 19 14:54:08.897 INFO [stderr]    |
Dec 19 14:54:08.897 INFO [stderr] 18 | pub fn initialize(command: Command) -> Result<(), error::Error> {
Dec 19 14:54:08.897 INFO [stderr]    |                   ^^^^^^^ help: consider using `_command` instead
Dec 19 14:54:08.897 INFO [stderr]    |
Dec 19 14:54:08.897 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 14:54:08.897 INFO [stderr] 
Dec 19 14:54:09.211 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.65s
Dec 19 14:54:09.481 INFO running `"docker" "inspect" "3fa8a6110b3f4dd4bbf8475831cd99af1c9ada9ec9bbde5bf2787e8d13ed485c"`
Dec 19 14:54:09.612 INFO running `"docker" "rm" "-f" "3fa8a6110b3f4dd4bbf8475831cd99af1c9ada9ec9bbde5bf2787e8d13ed485c"`
Dec 19 14:54:09.696 INFO [stdout] 3fa8a6110b3f4dd4bbf8475831cd99af1c9ada9ec9bbde5bf2787e8d13ed485c