[INFO] cloning repository https://github.com/stevebob/walls-experiment
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stevebob/walls-experiment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevebob%2Fwalls-experiment", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevebob%2Fwalls-experiment'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec804cd8c026fa346a60cb11cab3e3db9f9c6d2c
[INFO] checking stevebob/walls-experiment against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevebob%2Fwalls-experiment" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stevebob/walls-experiment on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/stevebob/walls-experiment
[INFO] finished tweaking git repo https://github.com/stevebob/walls-experiment
[INFO] tweaked toml for git repo https://github.com/stevebob/walls-experiment written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/stevebob/walls-experiment already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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-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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31ebe15582722f4c6e77c61c8edf0ecf69edf99bbcb6bcbb37052478cfef8691
[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" "31ebe15582722f4c6e77c61c8edf0ecf69edf99bbcb6bcbb37052478cfef8691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31ebe15582722f4c6e77c61c8edf0ecf69edf99bbcb6bcbb37052478cfef8691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31ebe15582722f4c6e77c61c8edf0ecf69edf99bbcb6bcbb37052478cfef8691", kill_on_drop: false }`
[INFO] [stdout] 31ebe15582722f4c6e77c61c8edf0ecf69edf99bbcb6bcbb37052478cfef8691
[INFO] running `Command { std: "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6538a3016913adeef0a4a3961001c4bf521a81a787f1084a4cafd28ff1dab94f
[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" "6538a3016913adeef0a4a3961001c4bf521a81a787f1084a4cafd28ff1dab94f", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling khronos_api v2.2.0
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking downcast-rs v1.0.3
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]     Checking grid_2d v0.9.1
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking draw_state v0.8.0
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking inflate v0.4.3
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking direction v0.16.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling quote v0.6.9
[INFO] [stderr]     Checking lock_api v0.1.4
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]    Compiling syn v0.15.17
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking wayland-sys v0.20.12
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking wayland-commons v0.20.12
[INFO] [stderr]    Compiling wayland-scanner v0.20.12
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]    Compiling wayland-client v0.20.12
[INFO] [stderr]    Compiling wayland-protocols v0.20.12
[INFO] [stderr]    Compiling gfx_gl v0.5.0
[INFO] [stderr]    Compiling glutin v0.18.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking smithay-client-toolkit v0.3.0
[INFO] [stderr]     Checking winit v0.17.2
[INFO] [stderr]    Compiling derivative v1.0.1
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]     Checking gfx_core v0.8.3
[INFO] [stderr]     Checking gfx_device_gl v0.15.3
[INFO] [stderr]     Checking gfx v0.17.1
[INFO] [stderr]     Checking gfx_window_glutin v0.26.0
[INFO] [stderr]     Checking walls-experiment v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.14s
[INFO] running `Command { std: "docker" "inspect" "6538a3016913adeef0a4a3961001c4bf521a81a787f1084a4cafd28ff1dab94f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6538a3016913adeef0a4a3961001c4bf521a81a787f1084a4cafd28ff1dab94f", kill_on_drop: false }`
[INFO] [stdout] 6538a3016913adeef0a4a3961001c4bf521a81a787f1084a4cafd28ff1dab94f