[INFO] cloning repository https://github.com/tehsis/rust-piano
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tehsis/rust-piano" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftehsis%2Frust-piano", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftehsis%2Frust-piano'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3756d0d06fa81253501295e9dfa8ee302f69808
[INFO] checking tehsis/rust-piano against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftehsis%2Frust-piano" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tehsis/rust-piano on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tehsis/rust-piano
[INFO] finished tweaking git repo https://github.com/tehsis/rust-piano
[INFO] tweaked toml for git repo https://github.com/tehsis/rust-piano written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/tehsis/rust-piano already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/nicklan/rimd.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-traits v0.1.36
[INFO] [stderr]   Downloaded num-rational v0.1.35
[INFO] [stderr]   Downloaded num-complex v0.1.35
[INFO] [stderr]   Downloaded portmidi v0.2.3
[INFO] [stderr]   Downloaded ioctl-rs v0.1.5
[INFO] [stderr]   Downloaded termios v0.2.2
[INFO] [stderr]   Downloaded serial v0.3.4
[INFO] [stderr]   Downloaded num-iter v0.1.32
[INFO] [stderr]   Downloaded num-integer v0.1.32
[INFO] [stderr]   Downloaded num v0.1.36
[INFO] [stderr]   Downloaded num-bigint v0.1.35
[INFO] [stderr]   Downloaded enum_primitive v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebaf9b3d980166ea2448ad1b4feaa7c426713992512ce49bf94beb958e00990d
[INFO] running `Command { std: "docker" "start" "-a" "ebaf9b3d980166ea2448ad1b4feaa7c426713992512ce49bf94beb958e00990d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebaf9b3d980166ea2448ad1b4feaa7c426713992512ce49bf94beb958e00990d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebaf9b3d980166ea2448ad1b4feaa7c426713992512ce49bf94beb958e00990d", kill_on_drop: false }`
[INFO] [stdout] ebaf9b3d980166ea2448ad1b4feaa7c426713992512ce49bf94beb958e00990d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c28e1d6945724846e9c6ae253ffd72f5609b9068847b65e83209ad22c0f37e9f
[INFO] running `Command { std: "docker" "start" "-a" "c28e1d6945724846e9c6ae253ffd72f5609b9068847b65e83209ad22c0f37e9f", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.17
[INFO] [stderr]     Checking rustc-serialize v0.3.19
[INFO] [stderr]     Checking portmidi v0.2.3
[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]     Checking rand v0.3.14
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking ioctl-rs v0.1.5
[INFO] [stderr]     Checking serial v0.3.4
[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" "c28e1d6945724846e9c6ae253ffd72f5609b9068847b65e83209ad22c0f37e9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c28e1d6945724846e9c6ae253ffd72f5609b9068847b65e83209ad22c0f37e9f", kill_on_drop: false }`
[INFO] [stdout] c28e1d6945724846e9c6ae253ffd72f5609b9068847b65e83209ad22c0f37e9f