[INFO] cloning repository https://github.com/DecrepitHuman/NetworkDiscoverer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DecrepitHuman/NetworkDiscoverer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDecrepitHuman%2FNetworkDiscoverer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDecrepitHuman%2FNetworkDiscoverer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a7e5a04e624a534a242cd92d33525c5651c9b43
[INFO] checking DecrepitHuman/NetworkDiscoverer against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDecrepitHuman%2FNetworkDiscoverer" "/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/DecrepitHuman/NetworkDiscoverer on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DecrepitHuman/NetworkDiscoverer
[INFO] finished tweaking git repo https://github.com/DecrepitHuman/NetworkDiscoverer
[INFO] tweaked toml for git repo https://github.com/DecrepitHuman/NetworkDiscoverer written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/DecrepitHuman/NetworkDiscoverer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebf98533675e5ae21f9410eac23c4ae46d9c046afb73406b989da581191216b0
[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" "ebf98533675e5ae21f9410eac23c4ae46d9c046afb73406b989da581191216b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebf98533675e5ae21f9410eac23c4ae46d9c046afb73406b989da581191216b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebf98533675e5ae21f9410eac23c4ae46d9c046afb73406b989da581191216b0", kill_on_drop: false }`
[INFO] [stdout] ebf98533675e5ae21f9410eac23c4ae46d9c046afb73406b989da581191216b0
[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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 927908a47dd112d995b1f26cacb6ccce8f45cd7be87e70c6cbfe65b58710c205
[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" "927908a47dd112d995b1f26cacb6ccce8f45cd7be87e70c6cbfe65b58710c205", kill_on_drop: false }`
[INFO] [stderr]     Checking Networker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `Networker` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `networker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `connected_ips` should have an upper case name
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | static mut connected_ips: Vec<String> = Vec::new();
[INFO] [stdout]   |            ^^^^^^^^^^^^^ help: convert the identifier to upper case: `CONNECTED_IPS`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `empty_ips` should have an upper case name
[INFO] [stdout]  --> src/main.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | static mut empty_ips: Vec<String> = Vec::new();
[INFO] [stdout]   |            ^^^^^^^^^ help: convert the identifier to upper case: `EMPTY_IPS`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Networker` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `networker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `connected_ips` should have an upper case name
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | static mut connected_ips: Vec<String> = Vec::new();
[INFO] [stdout]   |            ^^^^^^^^^^^^^ help: convert the identifier to upper case: `CONNECTED_IPS`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `empty_ips` should have an upper case name
[INFO] [stdout]  --> src/main.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | static mut empty_ips: Vec<String> = Vec::new();
[INFO] [stdout]   |            ^^^^^^^^^ help: convert the identifier to upper case: `EMPTY_IPS`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     stdout().flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     stdout().flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "927908a47dd112d995b1f26cacb6ccce8f45cd7be87e70c6cbfe65b58710c205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "927908a47dd112d995b1f26cacb6ccce8f45cd7be87e70c6cbfe65b58710c205", kill_on_drop: false }`
[INFO] [stdout] 927908a47dd112d995b1f26cacb6ccce8f45cd7be87e70c6cbfe65b58710c205