Dec 19 13:00:37.911 INFO checking matklad/select-2018 against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 13:00:37.911 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/matklad/select-2018:/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 13:00:38.362 INFO [stdout] 42b9b034b1584365d13770158a3cedc44fcd0988e60a44b298fcad1aac16e5cc
Dec 19 13:00:38.365 INFO running `"docker" "start" "-a" "42b9b034b1584365d13770158a3cedc44fcd0988e60a44b298fcad1aac16e5cc"`
Dec 19 13:00:41.036 INFO [stderr]     Checking crossbeam-epoch v0.5.0
Dec 19 13:00:41.870 INFO [stderr]     Checking crossbeam-channel v0.2.2
Dec 19 13:00:42.809 INFO [stderr]     Checking macro_select v0.1.0 (/opt/crater/workdir)
Dec 19 13:00:43.416 INFO [stderr] warning: struct is never constructed: `ConcurrentJob`
Dec 19 13:00:43.417 INFO [stderr]  --> src/concurrency.rs:4:1
Dec 19 13:00:43.417 INFO [stderr]   |
Dec 19 13:00:43.417 INFO [stderr] 4 | pub struct ConcurrentJob {
Dec 19 13:00:43.417 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:00:43.417 INFO [stderr] warning: struct is never constructed: `ConcurrentJob`
Dec 19 13:00:43.417 INFO [stderr]  --> src/concurrency.rs:4:1
Dec 19 13:00:43.417 INFO [stderr]   |
Dec 19 13:00:43.417 INFO [stderr] 4 | pub struct ConcurrentJob {
Dec 19 13:00:43.417 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:00:43.417 INFO [stderr]   |
Dec 19 13:00:43.417 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 13:00:43.417 INFO [stderr] 
Dec 19 13:00:43.418 INFO [stderr] warning: function is never used: `wait_for_all`
Dec 19 13:00:43.418 INFO [stderr]  --> src/concurrency.rs:8:1
Dec 19 13:00:43.418 INFO [stderr]   |
Dec 19 13:00:43.418 INFO [stderr] 8 | pub fn wait_for_all(mut jobs: Vec<ConcurrentJob>,) {
Dec 19 13:00:43.418 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:00:43.418 INFO [stderr] 
Dec 19 13:00:43.418 INFO [stderr]   |
Dec 19 13:00:43.418 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 13:00:43.418 INFO [stderr] 
Dec 19 13:00:43.418 INFO [stderr] warning: function is never used: `wait_for_all`
Dec 19 13:00:43.418 INFO [stderr]  --> src/concurrency.rs:8:1
Dec 19 13:00:43.418 INFO [stderr]   |
Dec 19 13:00:43.418 INFO [stderr] 8 | pub fn wait_for_all(mut jobs: Vec<ConcurrentJob>,) {
Dec 19 13:00:43.418 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:00:43.418 INFO [stderr] 
Dec 19 13:00:43.492 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.54s
Dec 19 13:00:44.656 INFO running `"docker" "inspect" "42b9b034b1584365d13770158a3cedc44fcd0988e60a44b298fcad1aac16e5cc"`
Dec 19 13:00:44.910 INFO running `"docker" "rm" "-f" "42b9b034b1584365d13770158a3cedc44fcd0988e60a44b298fcad1aac16e5cc"`
Dec 19 13:00:45.236 INFO [stdout] 42b9b034b1584365d13770158a3cedc44fcd0988e60a44b298fcad1aac16e5cc