[INFO] cloning repository https://github.com/k0pernicus/flashlight
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/k0pernicus/flashlight" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk0pernicus%2Fflashlight", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk0pernicus%2Fflashlight'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b31c015f8c881d87eff31eb93269469aaec3129
[INFO] testing k0pernicus/flashlight against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk0pernicus%2Fflashlight" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/k0pernicus/flashlight 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/k0pernicus/flashlight
[INFO] finished tweaking git repo https://github.com/k0pernicus/flashlight
[INFO] tweaked toml for git repo https://github.com/k0pernicus/flashlight written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/k0pernicus/flashlight 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 924db10cec53db8b1b81b2eead71ce3d2b824fbc2d2e26775e154e70673202ee
[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" "924db10cec53db8b1b81b2eead71ce3d2b824fbc2d2e26775e154e70673202ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "924db10cec53db8b1b81b2eead71ce3d2b824fbc2d2e26775e154e70673202ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "924db10cec53db8b1b81b2eead71ce3d2b824fbc2d2e26775e154e70673202ee", kill_on_drop: false }`
[INFO] [stdout] 924db10cec53db8b1b81b2eead71ce3d2b824fbc2d2e26775e154e70673202ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 8d59b6ec3035cb737785208e809311b6d28106805526faa4e54bbc03d906b5de
[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" "8d59b6ec3035cb737785208e809311b6d28106805526faa4e54bbc03d906b5de", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.8
[INFO] [stderr]    Compiling gdk-pixbuf v0.0.1
[INFO] [stderr]    Compiling cairo-rs v0.0.8
[INFO] [stderr]    Compiling c_vec v1.0.12
[INFO] [stderr]    Compiling gdk v0.3.0
[INFO] [stderr]    Compiling winapi v0.2.5
[INFO] [stderr]    Compiling gtk v0.0.7
[INFO] [stderr]    Compiling rustc-serialize v0.3.18
[INFO] [stderr]    Compiling argparse v0.2.1
[INFO] [stderr]    Compiling kernel32-sys v0.2.1
[INFO] [stdout] error[E0642]: patterns aren't allowed in functions without bodies
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.18/src/serialize.rs:145:45
[INFO] [stdout]     |
[INFO] [stdout] 145 | ...                   &f_name: &str,
[INFO] [stdout]     |                       ^^^^^^^ pattern not allowed in function without body
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling glib-sys v0.3.0
[INFO] [stderr]    Compiling gobject-sys v0.3.0
[INFO] [stderr]    Compiling gio-sys v0.3.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.3.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.3.0
[INFO] [stderr]    Compiling pango-sys v0.3.0
[INFO] [stderr]    Compiling gdk-sys v0.3.0
[INFO] [stderr]    Compiling atk-sys v0.3.0
[INFO] [stderr]    Compiling gtk-sys v0.3.0
[INFO] [stderr]    Compiling walkdir v0.1.5
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0642`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8d59b6ec3035cb737785208e809311b6d28106805526faa4e54bbc03d906b5de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d59b6ec3035cb737785208e809311b6d28106805526faa4e54bbc03d906b5de", kill_on_drop: false }`
[INFO] [stdout] 8d59b6ec3035cb737785208e809311b6d28106805526faa4e54bbc03d906b5de