[INFO] cloning repository https://github.com/gavinb/mandelrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gavinb/mandelrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgavinb%2Fmandelrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgavinb%2Fmandelrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54addf783566738ec67b09a3e2df09c6531ef307
[INFO] checking gavinb/mandelrust against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgavinb%2Fmandelrust" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gavinb/mandelrust on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gavinb/mandelrust
[INFO] finished tweaking git repo https://github.com/gavinb/mandelrust
[INFO] tweaked toml for git repo https://github.com/gavinb/mandelrust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/gavinb/mandelrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: path `/workspace/builds/worker-3/source/src/mandelrust.rs` was erroneously implicitly accepted for binary `mandelrust`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr] warning: path `/workspace/builds/worker-3/source/src/mr.rs` was erroneously implicitly accepted for binary `mr`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 052eb72c0e5b7a5ffeb842d4144c9332e9a84a691983051dae955617a6d487f2
[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" "052eb72c0e5b7a5ffeb842d4144c9332e9a84a691983051dae955617a6d487f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "052eb72c0e5b7a5ffeb842d4144c9332e9a84a691983051dae955617a6d487f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "052eb72c0e5b7a5ffeb842d4144c9332e9a84a691983051dae955617a6d487f2", kill_on_drop: false }`
[INFO] [stdout] 052eb72c0e5b7a5ffeb842d4144c9332e9a84a691983051dae955617a6d487f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e86dd484c8e9ab96e0d5553655bc707e411cc08ebfadfc0f5438cffdac7fad85
[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" "e86dd484c8e9ab96e0d5553655bc707e411cc08ebfadfc0f5438cffdac7fad85", kill_on_drop: false }`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/mandelrust.rs` was erroneously implicitly accepted for binary `mandelrust`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/mr.rs` was erroneously implicitly accepted for binary `mr`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking lazy_static v0.2.1
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking rustc-serialize v0.3.19
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking debug-builders v0.1.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking smallvec v0.1.7
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking num_cpus v0.2.11
[INFO] [stderr]     Checking dylib v0.0.1
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]    Compiling miniz-sys v0.1.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.4
[INFO] [stderr]     Checking shared_library v0.1.4
[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-0.3.19/src/serialize.rs:147:45
[INFO] [stdout]     |
[INFO] [stdout] 147 | ...                   &f_name: &str,
[INFO] [stdout]     |                       ^^^^^^^ pattern not allowed in function without body
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling wayland-scanner v0.5.11
[INFO] [stderr]    Compiling gl_generator v0.5.1
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]     Checking osmesa-sys v0.0.5
[INFO] [stderr]     Checking x11-dl v2.4.0
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking gif v0.8.0
[INFO] [stderr]     Checking num v0.1.32
[INFO] [stderr]     Checking enum_primitive v0.1.0
[INFO] [stderr]    Compiling tempfile v2.1.3
[INFO] [stderr]     Checking deque v0.3.1
[INFO] [stderr]     Checking libloading v0.2.2
[INFO] [stderr]     Checking fs2 v0.2.4
[INFO] [stderr]     Checking backtrace v0.1.8
[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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e86dd484c8e9ab96e0d5553655bc707e411cc08ebfadfc0f5438cffdac7fad85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e86dd484c8e9ab96e0d5553655bc707e411cc08ebfadfc0f5438cffdac7fad85", kill_on_drop: false }`
[INFO] [stdout] e86dd484c8e9ab96e0d5553655bc707e411cc08ebfadfc0f5438cffdac7fad85