[INFO] cloning repository https://github.com/vic-shihang-li/rs-queue-bench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vic-shihang-li/rs-queue-bench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvic-shihang-li%2Frs-queue-bench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvic-shihang-li%2Frs-queue-bench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fe0295db8c529eaa238f3cd7eaa1ff2afc215ae
[INFO] checking vic-shihang-li/rs-queue-bench against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvic-shihang-li%2Frs-queue-bench" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vic-shihang-li/rs-queue-bench on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vic-shihang-li/rs-queue-bench
[INFO] finished tweaking git repo https://github.com/vic-shihang-li/rs-queue-bench
[INFO] tweaked toml for git repo https://github.com/vic-shihang-li/rs-queue-bench written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vic-shihang-li/rs-queue-bench already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nolock v0.3.1
[INFO] [stderr]   Downloaded rtrb v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a191e2c55f6bb217e17451c28a68f9209021afa379aac40462e8b34b65b0fcd
[INFO] running `Command { std: "docker" "start" "-a" "2a191e2c55f6bb217e17451c28a68f9209021afa379aac40462e8b34b65b0fcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a191e2c55f6bb217e17451c28a68f9209021afa379aac40462e8b34b65b0fcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a191e2c55f6bb217e17451c28a68f9209021afa379aac40462e8b34b65b0fcd", kill_on_drop: false }`
[INFO] [stdout] 2a191e2c55f6bb217e17451c28a68f9209021afa379aac40462e8b34b65b0fcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b70ff8b0910bfd6c1691b3f34dc08c58df293677ed9024db2782c245466058f3
[INFO] running `Command { std: "docker" "start" "-a" "b70ff8b0910bfd6c1691b3f34dc08c58df293677ed9024db2782c245466058f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]     Checking owned-alloc v0.2.0
[INFO] [stderr]     Checking rtrb v0.2.0
[INFO] [stderr]     Checking lockfree v0.5.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking nolock v0.3.1
[INFO] [stderr]     Checking queue_bench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `bench_mpsc` is never used
[INFO] [stdout]    --> src/bench_mpsc.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn bench_mpsc(
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bench_mpsc` is never used
[INFO] [stdout]    --> src/bench_mpsc.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn bench_mpsc(
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.67s
[INFO] running `Command { std: "docker" "inspect" "b70ff8b0910bfd6c1691b3f34dc08c58df293677ed9024db2782c245466058f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b70ff8b0910bfd6c1691b3f34dc08c58df293677ed9024db2782c245466058f3", kill_on_drop: false }`
[INFO] [stdout] b70ff8b0910bfd6c1691b3f34dc08c58df293677ed9024db2782c245466058f3