[INFO] cloning repository https://github.com/mark-i-m/utcs-lab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mark-i-m/utcs-lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmark-i-m%2Futcs-lab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmark-i-m%2Futcs-lab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5082f6a23eebae794e7c394e6df277f4e6bc4eeb
[INFO] checking mark-i-m/utcs-lab against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmark-i-m%2Futcs-lab" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mark-i-m/utcs-lab on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mark-i-m/utcs-lab
[INFO] finished tweaking git repo https://github.com/mark-i-m/utcs-lab
[INFO] tweaked toml for git repo https://github.com/mark-i-m/utcs-lab written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/mark-i-m/utcs-lab already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c5be865e3c8d1a9ca50268d9969d5493b0cdc62a5789268967babaa0d4b37dd
[INFO] running `Command { std: "docker" "start" "-a" "8c5be865e3c8d1a9ca50268d9969d5493b0cdc62a5789268967babaa0d4b37dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c5be865e3c8d1a9ca50268d9969d5493b0cdc62a5789268967babaa0d4b37dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c5be865e3c8d1a9ca50268d9969d5493b0cdc62a5789268967babaa0d4b37dd", kill_on_drop: false }`
[INFO] [stdout] 8c5be865e3c8d1a9ca50268d9969d5493b0cdc62a5789268967babaa0d4b37dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de656f82db7dea10cbcce825ea217db95a68df85beb8caec3564637196fa11e0
[INFO] running `Command { std: "docker" "start" "-a" "de656f82db7dea10cbcce825ea217db95a68df85beb8caec3564637196fa11e0", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.11
[INFO] [stderr]     Checking winapi v0.2.6
[INFO] [stderr]     Checking regex-syntax v0.3.1
[INFO] [stderr]     Checking kernel32-sys v0.2.2
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking aho-corasick v0.5.2
[INFO] [stderr]     Checking thread_local v0.2.5
[INFO] [stderr]     Checking regex v0.1.69
[INFO] [stderr]     Checking utcs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::net::lookup_host`
[INFO] [stdout]   --> src/main.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::net::{TcpStream, lookup_host, SocketAddrV4, IpAddr};
[INFO] [stdout]    |                           ^^^^^^^^^^^ no `lookup_host` in `net`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::net::lookup_host`
[INFO] [stdout]   --> src/main.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::net::{TcpStream, lookup_host, SocketAddrV4, IpAddr};
[INFO] [stdout]    |                           ^^^^^^^^^^^ no `lookup_host` in `net`
[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 E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `utcs`
[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] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "de656f82db7dea10cbcce825ea217db95a68df85beb8caec3564637196fa11e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de656f82db7dea10cbcce825ea217db95a68df85beb8caec3564637196fa11e0", kill_on_drop: false }`
[INFO] [stdout] de656f82db7dea10cbcce825ea217db95a68df85beb8caec3564637196fa11e0