Dec 04 14:29:17.222 INFO checking matklad/select-2018 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 14:29:17.223 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 14:29:17.652 INFO [stdout] 539d36540f833b26684a8e7f4404500dacb5226b9625c383aea3ec9924eb4c79
Dec 04 14:29:17.654 INFO running `"docker" "start" "-a" "539d36540f833b26684a8e7f4404500dacb5226b9625c383aea3ec9924eb4c79"`
Dec 04 14:29:20.146 INFO [stderr] usermod: no changes
Dec 04 14:29:20.291 INFO [stderr]     Checking crossbeam-epoch v0.5.0
Dec 04 14:29:21.036 INFO [stderr]     Checking crossbeam-channel v0.2.2
Dec 04 14:29:22.465 INFO [stderr]     Checking macro_select v0.1.0 (/source)
Dec 04 14:29:23.286 INFO [stderr] warning: struct is never constructed: `ConcurrentJob`
Dec 04 14:29:23.286 INFO [stderr]  --> src/concurrency.rs:4:1
Dec 04 14:29:23.286 INFO [stderr]   |
Dec 04 14:29:23.286 INFO [stderr] 4 | pub struct ConcurrentJob {
Dec 04 14:29:23.286 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:29:23.286 INFO [stderr]   |
Dec 04 14:29:23.286 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 14:29:23.286 INFO [stderr] 
Dec 04 14:29:23.286 INFO [stderr] warning: function is never used: `wait_for_all`
Dec 04 14:29:23.286 INFO [stderr]  --> src/concurrency.rs:8:1
Dec 04 14:29:23.286 INFO [stderr]   |
Dec 04 14:29:23.286 INFO [stderr] 8 | pub fn wait_for_all(mut jobs: Vec<ConcurrentJob>,) {
Dec 04 14:29:23.286 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:29:23.286 INFO [stderr] 
Dec 04 14:29:23.367 INFO [stderr] warning: struct is never constructed: `ConcurrentJob`
Dec 04 14:29:23.389 INFO [stderr]  --> src/concurrency.rs:4:1
Dec 04 14:29:23.390 INFO [stderr]   |
Dec 04 14:29:23.390 INFO [stderr] 4 | pub struct ConcurrentJob {
Dec 04 14:29:23.390 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:29:23.390 INFO [stderr]   |
Dec 04 14:29:23.390 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 14:29:23.390 INFO [stderr] 
Dec 04 14:29:23.390 INFO [stderr] warning: function is never used: `wait_for_all`
Dec 04 14:29:23.390 INFO [stderr]  --> src/concurrency.rs:8:1
Dec 04 14:29:23.390 INFO [stderr]   |
Dec 04 14:29:23.390 INFO [stderr] 8 | pub fn wait_for_all(mut jobs: Vec<ConcurrentJob>,) {
Dec 04 14:29:23.390 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:29:23.390 INFO [stderr] 
Dec 04 14:29:23.420 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.24s
Dec 04 14:29:23.439 INFO [stderr] su: No module specific data is present
Dec 04 14:29:24.219 INFO running `"docker" "inspect" "539d36540f833b26684a8e7f4404500dacb5226b9625c383aea3ec9924eb4c79"`
Dec 04 14:29:24.559 INFO running `"docker" "rm" "-f" "539d36540f833b26684a8e7f4404500dacb5226b9625c383aea3ec9924eb4c79"`
Dec 04 14:29:24.959 INFO [stdout] 539d36540f833b26684a8e7f4404500dacb5226b9625c383aea3ec9924eb4c79