[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 try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[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 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "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" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "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" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfe8eebbd20872c6e7280e30ccfc84e4df97b4c92752e5333cb1edf4bc776ac1
[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" "dfe8eebbd20872c6e7280e30ccfc84e4df97b4c92752e5333cb1edf4bc776ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfe8eebbd20872c6e7280e30ccfc84e4df97b4c92752e5333cb1edf4bc776ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfe8eebbd20872c6e7280e30ccfc84e4df97b4c92752e5333cb1edf4bc776ac1", kill_on_drop: false }`
[INFO] [stdout] dfe8eebbd20872c6e7280e30ccfc84e4df97b4c92752e5333cb1edf4bc776ac1
[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" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d798bc023aefa4a45397389a89ce74a33ab34cfb2f2e54f722a332f65ad9b95
[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" "8d798bc023aefa4a45397389a89ce74a33ab34cfb2f2e54f722a332f65ad9b95", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[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<Option<(&str, &str, &str, &str)>, Utf8Error>`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           expected enum `Option`, found tuple
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `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[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<Option<(&str, &str, &str, &str)>, Utf8Error>`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           expected enum `Option`, found tuple
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `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] [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" "8d798bc023aefa4a45397389a89ce74a33ab34cfb2f2e54f722a332f65ad9b95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d798bc023aefa4a45397389a89ce74a33ab34cfb2f2e54f722a332f65ad9b95", kill_on_drop: false }`
[INFO] [stdout] 8d798bc023aefa4a45397389a89ce74a33ab34cfb2f2e54f722a332f65ad9b95
