[INFO] cloning repository https://github.com/1vn/wifi_doorbell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/1vn/wifi_doorbell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1vn%2Fwifi_doorbell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1vn%2Fwifi_doorbell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9cfdb1807e0fdd916123b8ff0548bb76470b7631
[INFO] checking 1vn/wifi_doorbell against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1vn%2Fwifi_doorbell" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/1vn/wifi_doorbell on toolchain 0ab79c4b48ad19260fa46623f452c1b403a360e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/1vn/wifi_doorbell
[INFO] finished tweaking git repo https://github.com/1vn/wifi_doorbell
[INFO] tweaked toml for git repo https://github.com/1vn/wifi_doorbell written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/1vn/wifi_doorbell already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e24af23c187122a705efe14007280af6f74e25076a270c991b60ddf2594c37e5
[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" "e24af23c187122a705efe14007280af6f74e25076a270c991b60ddf2594c37e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e24af23c187122a705efe14007280af6f74e25076a270c991b60ddf2594c37e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e24af23c187122a705efe14007280af6f74e25076a270c991b60ddf2594c37e5", kill_on_drop: false }`
[INFO] [stdout] e24af23c187122a705efe14007280af6f74e25076a270c991b60ddf2594c37e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 2ab9df45f47e53377ff85247bd8b19cc45c5c2b574a3d0b2eb13dad7bd0755c2
[INFO] running `Command { std: "docker" "start" "-a" "2ab9df45f47e53377ff85247bd8b19cc45c5c2b574a3d0b2eb13dad7bd0755c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling ears v0.3.5
[INFO] [stderr]     Checking libc v0.2.19
[INFO] [stderr]     Checking wifi_doorbell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `get_local_ip`
[INFO] [stdout]   --> src/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn get_local_ip() -> 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: `ip`
[INFO] [stdout]   --> src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     ip: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mac`
[INFO] [stdout]   --> src/main.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     mac: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_local_ip`
[INFO] [stdout]   --> src/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn get_local_ip() -> 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: `ip`
[INFO] [stdout]   --> src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     ip: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mac`
[INFO] [stdout]   --> src/main.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     mac: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "2ab9df45f47e53377ff85247bd8b19cc45c5c2b574a3d0b2eb13dad7bd0755c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ab9df45f47e53377ff85247bd8b19cc45c5c2b574a3d0b2eb13dad7bd0755c2", kill_on_drop: false }`
[INFO] [stdout] 2ab9df45f47e53377ff85247bd8b19cc45c5c2b574a3d0b2eb13dad7bd0755c2