[INFO] cloning repository https://github.com/KnockedAround/rust_ip_sniffer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KnockedAround/rust_ip_sniffer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnockedAround%2Frust_ip_sniffer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnockedAround%2Frust_ip_sniffer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af76f988449e8ddd4c53cb44fd23b1023837f98f
[INFO] checking KnockedAround/rust_ip_sniffer against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnockedAround%2Frust_ip_sniffer" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KnockedAround/rust_ip_sniffer on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/KnockedAround/rust_ip_sniffer
[INFO] finished tweaking git repo https://github.com/KnockedAround/rust_ip_sniffer
[INFO] tweaked toml for git repo https://github.com/KnockedAround/rust_ip_sniffer written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/KnockedAround/rust_ip_sniffer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4955991ed92cc044db29bc5fafaaca3273a89e2cb064b8585aecbb58f3b49f39
[INFO] running `Command { std: "docker" "start" "-a" "4955991ed92cc044db29bc5fafaaca3273a89e2cb064b8585aecbb58f3b49f39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4955991ed92cc044db29bc5fafaaca3273a89e2cb064b8585aecbb58f3b49f39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4955991ed92cc044db29bc5fafaaca3273a89e2cb064b8585aecbb58f3b49f39", kill_on_drop: false }`
[INFO] [stdout] 4955991ed92cc044db29bc5fafaaca3273a89e2cb064b8585aecbb58f3b49f39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f5c377f9090271c09507e25486e69f32e787eef235f3913226f3d1c46f4ff20
[INFO] running `Command { std: "docker" "start" "-a" "2f5c377f9090271c09507e25486e69f32e787eef235f3913226f3d1c46f4ff20", kill_on_drop: false }`
[INFO] [stderr]     Checking ip_sniffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `flag`
[INFO] [stdout]   --> src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     flag: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `flag`
[INFO] [stdout]   --> src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     flag: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2f5c377f9090271c09507e25486e69f32e787eef235f3913226f3d1c46f4ff20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f5c377f9090271c09507e25486e69f32e787eef235f3913226f3d1c46f4ff20", kill_on_drop: false }`
[INFO] [stdout] 2f5c377f9090271c09507e25486e69f32e787eef235f3913226f3d1c46f4ff20