[INFO] updating cached repository https://github.com/kunalmohan/wgpu-prac
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ebee520eb13e0b0449bbdfcc74904ee6b309db35
[INFO] testing kunalmohan/wgpu-prac against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunalmohan%2Fwgpu-prac" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  77% (7/9)   
Checking out files:  88% (8/9)   
Checking out files: 100% (9/9)   
Checking out files: 100% (9/9), done.
[INFO] validating manifest of git repo https://github.com/kunalmohan/wgpu-prac on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kunalmohan/wgpu-prac
[INFO] finished tweaking git repo https://github.com/kunalmohan/wgpu-prac
[INFO] tweaked toml for git repo https://github.com/kunalmohan/wgpu-prac written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/kunalmohan/wgpu-prac already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] 172044fabd54f7b086428396e997a2b13f5e4de851afc4c55d14701abf15f541
[INFO] running `Command { std: "docker" "start" "-a" "172044fabd54f7b086428396e997a2b13f5e4de851afc4c55d14701abf15f541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "172044fabd54f7b086428396e997a2b13f5e4de851afc4c55d14701abf15f541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "172044fabd54f7b086428396e997a2b13f5e4de851afc4c55d14701abf15f541", kill_on_drop: false }`
[INFO] [stdout] 172044fabd54f7b086428396e997a2b13f5e4de851afc4c55d14701abf15f541
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6be9cf28ee0a6ef5aae4373100c9e2036e5c5823a17d7f484fc79be1776dca6
[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" "c6be9cf28ee0a6ef5aae4373100c9e2036e5c5823a17d7f484fc79be1776dca6", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling cgmath v0.17.0
[INFO] [stderr]    Compiling copyless v0.1.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling block-buffer v0.3.3
[INFO] [stderr]    Compiling hibitset v0.6.3
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling deflate v0.8.3
[INFO] [stderr]    Compiling tiff v0.4.0
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling num_cpus v1.12.0
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling parking_lot_core v0.7.0
[INFO] [stderr]    Compiling generic-array v0.9.0
[INFO] [stderr]    Compiling relevant v0.4.2
[INFO] [stderr]    Compiling dlib v0.4.1
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling mio v0.6.21
[INFO] [stderr]    Compiling ash v0.29.0
[INFO] [stderr]    Compiling gfx-hal v0.4.1
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]    Compiling wayland-sys v0.23.6
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling parking_lot v0.10.0
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling zerocopy-derive v0.1.4
[INFO] [stderr]    Compiling png v0.16.1
[INFO] [stderr]    Compiling rusttype v0.8.2
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling glsl-to-spirv v0.1.7
[INFO] [stderr]    Compiling rusttype v0.7.9
[INFO] [stderr]    Compiling andrew v0.2.1
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling zerocopy v0.2.8
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr] error: could not compile `nix`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nix /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nix-0.14.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 -C metadata=48974d8787d6b836 -C extra-filename=-48974d8787d6b836 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-ef3b499484556621.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-727e218cbe4629d5.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-feb546ad79697380.rmeta --extern void=/opt/rustwide/target/debug/deps/libvoid-2b8404f9072f9abf.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c6be9cf28ee0a6ef5aae4373100c9e2036e5c5823a17d7f484fc79be1776dca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6be9cf28ee0a6ef5aae4373100c9e2036e5c5823a17d7f484fc79be1776dca6", kill_on_drop: false }`
[INFO] [stdout] c6be9cf28ee0a6ef5aae4373100c9e2036e5c5823a17d7f484fc79be1776dca6