[INFO] updating cached repository https://github.com/matklad/select-2018
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4f7f654a49c6637224c4b01c171d6ce79c5f16f9
[INFO] checking matklad/select-2018 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fselect-2018" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/select-2018 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/matklad/select-2018
[INFO] finished tweaking git repo https://github.com/matklad/select-2018
[INFO] tweaked toml for git repo https://github.com/matklad/select-2018 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/select-2018 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cd1397ed63d0e513f818b62a5f47e1c48ca47ecccccb6a436b4a9bd6465eb1f3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "cd1397ed63d0e513f818b62a5f47e1c48ca47ecccccb6a436b4a9bd6465eb1f3"`
[INFO] [stderr]     Checking crossbeam-utils v0.4.1
[INFO] [stderr]     Checking crossbeam-epoch v0.5.0
[INFO] [stderr]     Checking crossbeam-channel v0.2.2
[INFO] [stderr]     Checking macro_select v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `ConcurrentJob`
[INFO] [stderr]  --> src/concurrency.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct ConcurrentJob {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `wait_for_all`
[INFO] [stderr]  --> src/concurrency.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn wait_for_all(mut jobs: Vec<ConcurrentJob>,) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ConcurrentJob`
[INFO] [stderr]  --> src/concurrency.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct ConcurrentJob {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `wait_for_all`
[INFO] [stderr]  --> src/concurrency.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn wait_for_all(mut jobs: Vec<ConcurrentJob>,) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.09s
[INFO] running `"docker" "inspect" "cd1397ed63d0e513f818b62a5f47e1c48ca47ecccccb6a436b4a9bd6465eb1f3"`
[INFO] running `"docker" "rm" "-f" "cd1397ed63d0e513f818b62a5f47e1c48ca47ecccccb6a436b4a9bd6465eb1f3"`
[INFO] [stdout] cd1397ed63d0e513f818b62a5f47e1c48ca47ecccccb6a436b4a9bd6465eb1f3