[INFO] cloning repository https://github.com/zcash/mpc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zcash/mpc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcash%2Fmpc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcash%2Fmpc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 79e7689e78180b5b6b3855d2d2e3f213674121e9
[INFO] testing zcash/mpc against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcash%2Fmpc" "/workspace/builds/worker-107/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-107/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/zcash/mpc 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/zcash/mpc
[INFO] finished tweaking git repo https://github.com/zcash/mpc
[INFO] tweaked toml for git repo https://github.com/zcash/mpc written to /workspace/builds/worker-107/source/Cargo.toml
[INFO] crate git repo https://github.com/zcash/mpc 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]  Downloading crates ...
[INFO] [stderr]   Downloaded constant_time_eq v0.1.2
[INFO] [stderr]   Downloaded gcc v0.3.35
[INFO] [stderr]   Downloaded crossbeam v0.2.10
[INFO] [stderr]   Downloaded regex-syntax v0.3.5
[INFO] [stderr]   Downloaded blake2-rfc v0.2.17
[INFO] [stderr]   Downloaded bincode v0.6.0
[INFO] [stderr]   Downloaded regex v0.1.77
[INFO] [stderr]   Downloaded bn v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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] f2749da7e5c1a41ea9741116b369f2d36b37b82342fa7cf7783c2848b3d2c75e
[INFO] running `Command { std: "docker" "start" "-a" "f2749da7e5c1a41ea9741116b369f2d36b37b82342fa7cf7783c2848b3d2c75e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2749da7e5c1a41ea9741116b369f2d36b37b82342fa7cf7783c2848b3d2c75e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2749da7e5c1a41ea9741116b369f2d36b37b82342fa7cf7783c2848b3d2c75e", kill_on_drop: false }`
[INFO] [stdout] f2749da7e5c1a41ea9741116b369f2d36b37b82342fa7cf7783c2848b3d2c75e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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] 3da5fc36c301fc3b5ef50e6a21fdc66721dd495d452d3faf46a701bbc288648e
[INFO] running `Command { std: "docker" "start" "-a" "3da5fc36c301fc3b5ef50e6a21fdc66721dd495d452d3faf46a701bbc288648e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.16
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling gcc v0.3.35
[INFO] [stderr]    Compiling rustc-serialize v0.3.19
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling regex-syntax v0.3.5
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling num-traits v0.1.35
[INFO] [stderr]    Compiling lazy_static v0.1.16
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling constant_time_eq v0.1.2
[INFO] [stderr]    Compiling crossbeam v0.2.10
[INFO] [stderr]    Compiling ansi_term v0.9.0
[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 blake2-rfc v0.2.17
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[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" "3da5fc36c301fc3b5ef50e6a21fdc66721dd495d452d3faf46a701bbc288648e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3da5fc36c301fc3b5ef50e6a21fdc66721dd495d452d3faf46a701bbc288648e", kill_on_drop: false }`
[INFO] [stdout] 3da5fc36c301fc3b5ef50e6a21fdc66721dd495d452d3faf46a701bbc288648e