[INFO] fetching crate linebuffer 0.1.2...
[INFO] checking linebuffer-0.1.2 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate linebuffer 0.1.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate linebuffer 0.1.2 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate linebuffer 0.1.2
[INFO] finished tweaking crates.io crate linebuffer 0.1.2
[INFO] tweaked toml for crates.io crate linebuffer 0.1.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d7b8c58cfa6fa580ae4d25f2d2d103f50cfa3e18088a4714307897faa35e0a04
[INFO] running `Command { std: "docker" "start" "-a" "d7b8c58cfa6fa580ae4d25f2d2d103f50cfa3e18088a4714307897faa35e0a04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7b8c58cfa6fa580ae4d25f2d2d103f50cfa3e18088a4714307897faa35e0a04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7b8c58cfa6fa580ae4d25f2d2d103f50cfa3e18088a4714307897faa35e0a04", kill_on_drop: false }`
[INFO] [stdout] d7b8c58cfa6fa580ae4d25f2d2d103f50cfa3e18088a4714307897faa35e0a04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14a130971a8a5894e859b8e6eed3757b19980785879dcaedbd92a3cf2e931bf6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "14a130971a8a5894e859b8e6eed3757b19980785879dcaedbd92a3cf2e931bf6", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking linebuffer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> tests/perf_simple.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.25s
[INFO] running `Command { std: "docker" "inspect" "14a130971a8a5894e859b8e6eed3757b19980785879dcaedbd92a3cf2e931bf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14a130971a8a5894e859b8e6eed3757b19980785879dcaedbd92a3cf2e931bf6", kill_on_drop: false }`
[INFO] [stdout] 14a130971a8a5894e859b8e6eed3757b19980785879dcaedbd92a3cf2e931bf6