[INFO] cloning repository https://github.com/davidparkagoda/ftc-debug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidparkagoda/ftc-debug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidparkagoda%2Fftc-debug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidparkagoda%2Fftc-debug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2d43a329a694c52d8923ce6ca0a078cbd5784b0
[INFO] checking davidparkagoda/ftc-debug against master#da897dfb6daa268a965d2d73620316ba56020a19 for pr-76219
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidparkagoda%2Fftc-debug" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidparkagoda/ftc-debug on toolchain da897dfb6daa268a965d2d73620316ba56020a19
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davidparkagoda/ftc-debug
[INFO] finished tweaking git repo https://github.com/davidparkagoda/ftc-debug
[INFO] tweaked toml for git repo https://github.com/davidparkagoda/ftc-debug written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/davidparkagoda/ftc-debug already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 35ba41a9bf8b5cdfe2783cd91d6e58f287b41f0eed434195703afa4875e3e43b
[INFO] running `Command { std: "docker" "start" "-a" "35ba41a9bf8b5cdfe2783cd91d6e58f287b41f0eed434195703afa4875e3e43b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35ba41a9bf8b5cdfe2783cd91d6e58f287b41f0eed434195703afa4875e3e43b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35ba41a9bf8b5cdfe2783cd91d6e58f287b41f0eed434195703afa4875e3e43b", kill_on_drop: false }`
[INFO] [stdout] 35ba41a9bf8b5cdfe2783cd91d6e58f287b41f0eed434195703afa4875e3e43b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4869f692e975ad12d2acb0808f213ac1f36b113108560c3cb722860c953ad35
[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" "a4869f692e975ad12d2acb0808f213ac1f36b113108560c3cb722860c953ad35", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.5
[INFO] [stderr]     Checking structopt v0.3.5
[INFO] [stderr]     Checking ftc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:51:27
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 if let Ok((name, mac, owner_ip, status)) = str::from_utf8(&buf[..bytes_count]).map(parse) {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^    ---------------------------------------------- this expression has type `std::result::Result<std::option::Option<(&str, &str, &str, &str)>, std::str::Utf8Error>`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           expected enum `std::option::Option`, found tuple
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `std::option::Option<(&str, &str, &str, &str)>`
[INFO] [stdout]              found tuple `(_, _, _, _)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:51:27
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 if let Ok((name, mac, owner_ip, status)) = str::from_utf8(&buf[..bytes_count]).map(parse) {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^    ---------------------------------------------- this expression has type `std::result::Result<std::option::Option<(&str, &str, &str, &str)>, std::str::Utf8Error>`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           expected enum `std::option::Option`, found tuple
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `std::option::Option<(&str, &str, &str, &str)>`
[INFO] [stdout]              found tuple `(_, _, _, _)`
[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 E0308`.
[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 E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ftc`.
[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" "a4869f692e975ad12d2acb0808f213ac1f36b113108560c3cb722860c953ad35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4869f692e975ad12d2acb0808f213ac1f36b113108560c3cb722860c953ad35", kill_on_drop: false }`
[INFO] [stdout] a4869f692e975ad12d2acb0808f213ac1f36b113108560c3cb722860c953ad35