[INFO] cloning repository https://github.com/ha-shine/flocking
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ha-shine/flocking" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fha-shine%2Fflocking", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fha-shine%2Fflocking'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd6655f5347d1088d70d695dc1c960faa327263e
[INFO] checking ha-shine/flocking against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fha-shine%2Fflocking" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ha-shine/flocking on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ha-shine/flocking
[INFO] finished tweaking git repo https://github.com/ha-shine/flocking
[INFO] tweaked toml for git repo https://github.com/ha-shine/flocking written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/ha-shine/flocking already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3843d6a0390b4e71aa28b0ce140cb82d502a828d875c80c886881d709714740c
[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" "3843d6a0390b4e71aa28b0ce140cb82d502a828d875c80c886881d709714740c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3843d6a0390b4e71aa28b0ce140cb82d502a828d875c80c886881d709714740c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3843d6a0390b4e71aa28b0ce140cb82d502a828d875c80c886881d709714740c", kill_on_drop: false }`
[INFO] [stdout] 3843d6a0390b4e71aa28b0ce140cb82d502a828d875c80c886881d709714740c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d009c199128feb73edccb069985b6bf5f08d281edb63a2ab00949ec0d277285e
[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" "d009c199128feb73edccb069985b6bf5f08d281edb63a2ab00949ec0d277285e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]     Checking stb_truetype v0.2.2
[INFO] [stderr]    Compiling x11-dl v2.18.0
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stderr]     Checking tempfile v3.0.2
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.12.5
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking wayland-client v0.12.5
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rusttype v0.4.3
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]     Checking piston2d-graphics v0.26.0
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking wayland-protocols v0.12.5
[INFO] [stderr]     Checking wayland-kbd v0.13.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking wayland-window v0.13.3
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking winit v0.12.0
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking glutin v0.14.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.53.0
[INFO] [stderr]     Checking pistoncore-input v0.21.0
[INFO] [stderr]     Checking pistoncore-window v0.32.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.37.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.47.0
[INFO] [stderr]     Checking piston v0.37.0
[INFO] [stderr]     Checking flocking v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.68s
[INFO] running `Command { std: "docker" "inspect" "d009c199128feb73edccb069985b6bf5f08d281edb63a2ab00949ec0d277285e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d009c199128feb73edccb069985b6bf5f08d281edb63a2ab00949ec0d277285e", kill_on_drop: false }`
[INFO] [stdout] d009c199128feb73edccb069985b6bf5f08d281edb63a2ab00949ec0d277285e