[INFO] cloning repository https://github.com/matthewbentley/rust-mynet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matthewbentley/rust-mynet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewbentley%2Frust-mynet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewbentley%2Frust-mynet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2118f8e448f66cc441413d42ed1084d1d3e0b3b2
[INFO] testing matthewbentley/rust-mynet against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewbentley%2Frust-mynet" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matthewbentley/rust-mynet on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matthewbentley/rust-mynet
[INFO] finished tweaking git repo https://github.com/matthewbentley/rust-mynet
[INFO] tweaked toml for git repo https://github.com/matthewbentley/rust-mynet written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/matthewbentley/rust-mynet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/matthewbentley/tuntap-rust.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded eui48 v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea415d3d4681a7e4bbea41db96b7e1cdf48c0c6d301d2f37fd7ff4f3c1b43566
[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" "ea415d3d4681a7e4bbea41db96b7e1cdf48c0c6d301d2f37fd7ff4f3c1b43566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea415d3d4681a7e4bbea41db96b7e1cdf48c0c6d301d2f37fd7ff4f3c1b43566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea415d3d4681a7e4bbea41db96b7e1cdf48c0c6d301d2f37fd7ff4f3c1b43566", kill_on_drop: false }`
[INFO] [stdout] ea415d3d4681a7e4bbea41db96b7e1cdf48c0c6d301d2f37fd7ff4f3c1b43566
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72341c132552873a3ac882e4b2922dfadd6657bfa18c27f99bee84ce3b2bb0a9
[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" "72341c132552873a3ac882e4b2922dfadd6657bfa18c27f99bee84ce3b2bb0a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling tuntap v0.1.0 (https://github.com/matthewbentley/tuntap-rust.git#9de4c3f2)
[INFO] [stderr]    Compiling rustc-serialize v0.3.18
[INFO] [stderr]    Compiling libc v0.2.8
[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] [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] running `Command { std: "docker" "inspect" "72341c132552873a3ac882e4b2922dfadd6657bfa18c27f99bee84ce3b2bb0a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72341c132552873a3ac882e4b2922dfadd6657bfa18c27f99bee84ce3b2bb0a9", kill_on_drop: false }`
[INFO] [stdout] 72341c132552873a3ac882e4b2922dfadd6657bfa18c27f99bee84ce3b2bb0a9