[INFO] cloning repository https://github.com/sourcebox/sysex-drop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sourcebox/sysex-drop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourcebox%2Fsysex-drop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourcebox%2Fsysex-drop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 92a6c0858ad6eef562273466536198746fd0df0f
[INFO] testing sourcebox/sysex-drop against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourcebox%2Fsysex-drop" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sourcebox/sysex-drop on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sourcebox/sysex-drop
[INFO] finished tweaking git repo https://github.com/sourcebox/sysex-drop
[INFO] tweaked toml for git repo https://github.com/sourcebox/sysex-drop written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/sourcebox/sysex-drop already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d790fe8e732f710a5bab1c4a3a6db61bc4450f72c4586de376efa1b6a2c8198f
[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" "d790fe8e732f710a5bab1c4a3a6db61bc4450f72c4586de376efa1b6a2c8198f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d790fe8e732f710a5bab1c4a3a6db61bc4450f72c4586de376efa1b6a2c8198f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d790fe8e732f710a5bab1c4a3a6db61bc4450f72c4586de376efa1b6a2c8198f", kill_on_drop: false }`
[INFO] [stdout] d790fe8e732f710a5bab1c4a3a6db61bc4450f72c4586de376efa1b6a2c8198f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 567d6ae954a51999835b1bf19f86361ddc23ba23373665674284bf8d7e42d3d2
[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" "567d6ae954a51999835b1bf19f86361ddc23ba23373665674284bf8d7e42d3d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling minimal-lexical v0.1.3
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling winit v0.25.0
[INFO] [stderr]    Compiling atomic_refcell v0.1.7
[INFO] [stderr]    Compiling takeable-option v0.5.0
[INFO] [stderr]    Compiling webbrowser v0.5.5
[INFO] [stderr]    Compiling sysex-drop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling memmap2 v0.1.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]    Compiling memmap2 v0.2.3
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling wayland-scanner v0.28.6
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling directories-next v2.0.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling nom v7.0.0
[INFO] [stderr]    Compiling object v0.26.2
[INFO] [stderr]    Compiling simple_logger v1.13.0
[INFO] [stderr]    Compiling mio-misc v1.2.1
[INFO] [stderr]    Compiling wayland-client v0.28.6
[INFO] [stderr]    Compiling wayland-protocols v0.28.6
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.5
[INFO] [stderr]    Compiling glium v0.30.2
[INFO] [stderr]    Compiling alsa v0.4.3
[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-0.15.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=2d0f01e7d27b2155 -C extra-filename=-2d0f01e7d27b2155 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-f947290fec4feb2c.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-4dc40f94662accb2.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-3daf5756cb8889ad.rmeta --extern void=/opt/rustwide/target/debug/deps/libvoid-db8f1174cd903021.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" "567d6ae954a51999835b1bf19f86361ddc23ba23373665674284bf8d7e42d3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "567d6ae954a51999835b1bf19f86361ddc23ba23373665674284bf8d7e42d3d2", kill_on_drop: false }`
[INFO] [stdout] 567d6ae954a51999835b1bf19f86361ddc23ba23373665674284bf8d7e42d3d2