[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 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewbentley%2Frust-mynet" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matthewbentley/rust-mynet on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-21/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" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/matthewbentley/tuntap-rust.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-serialize v0.3.18
[INFO] [stderr]   Downloaded libc v0.2.8
[INFO] [stderr]   Downloaded eui48 v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2774335bb1bc430f549f979d909ccfbad739b76be988701ccc764eef6aeb9d8d
[INFO] running `Command { std: "docker" "start" "-a" "2774335bb1bc430f549f979d909ccfbad739b76be988701ccc764eef6aeb9d8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2774335bb1bc430f549f979d909ccfbad739b76be988701ccc764eef6aeb9d8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2774335bb1bc430f549f979d909ccfbad739b76be988701ccc764eef6aeb9d8d", kill_on_drop: false }`
[INFO] [stdout] 2774335bb1bc430f549f979d909ccfbad739b76be988701ccc764eef6aeb9d8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d51c4b27ac206db5e41e5b837b6d15cb6d7297b8e920887d074b2aa6f45fa4cf
[INFO] running `Command { std: "docker" "start" "-a" "d51c4b27ac206db5e41e5b837b6d15cb6d7297b8e920887d074b2aa6f45fa4cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling tuntap v0.1.0 (https://github.com/matthewbentley/tuntap-rust.git#9de4c3f2)
[INFO] [stderr]    Compiling libc v0.2.8
[INFO] [stderr]    Compiling rustc-serialize v0.3.18
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d51c4b27ac206db5e41e5b837b6d15cb6d7297b8e920887d074b2aa6f45fa4cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d51c4b27ac206db5e41e5b837b6d15cb6d7297b8e920887d074b2aa6f45fa4cf", kill_on_drop: false }`
[INFO] [stdout] d51c4b27ac206db5e41e5b837b6d15cb6d7297b8e920887d074b2aa6f45fa4cf