[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] testing DecrepitHuman/NetworkDiscoverer against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDecrepitHuman%2FNetworkDiscoverer" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DecrepitHuman/NetworkDiscoverer on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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-4/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe3308f7d7998e92eb6261e96982e37c549bb3128455102e4734ae48fd4744d9
[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" "fe3308f7d7998e92eb6261e96982e37c549bb3128455102e4734ae48fd4744d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe3308f7d7998e92eb6261e96982e37c549bb3128455102e4734ae48fd4744d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe3308f7d7998e92eb6261e96982e37c549bb3128455102e4734ae48fd4744d9", kill_on_drop: false }`
[INFO] [stdout] fe3308f7d7998e92eb6261e96982e37c549bb3128455102e4734ae48fd4744d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--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] 658483de8c08c0eb8ebe4ef2351dad1ccd9f58191d9759a421c4ace454c28f06
[INFO] running `Command { std: "docker" "start" "-a" "658483de8c08c0eb8ebe4ef2351dad1ccd9f58191d9759a421c4ace454c28f06", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 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 0.77s
[INFO] running `Command { std: "docker" "inspect" "658483de8c08c0eb8ebe4ef2351dad1ccd9f58191d9759a421c4ace454c28f06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "658483de8c08c0eb8ebe4ef2351dad1ccd9f58191d9759a421c4ace454c28f06", kill_on_drop: false }`
[INFO] [stdout] 658483de8c08c0eb8ebe4ef2351dad1ccd9f58191d9759a421c4ace454c28f06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e94552b6e4111b113c994a0a95def3a6eb4423354084ce506fd303b8a475feb
[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" "3e94552b6e4111b113c994a0a95def3a6eb4423354084ce506fd303b8a475feb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling 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: 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 test [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `Command { std: "docker" "inspect" "3e94552b6e4111b113c994a0a95def3a6eb4423354084ce506fd303b8a475feb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e94552b6e4111b113c994a0a95def3a6eb4423354084ce506fd303b8a475feb", kill_on_drop: false }`
[INFO] [stdout] 3e94552b6e4111b113c994a0a95def3a6eb4423354084ce506fd303b8a475feb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 862360bb5086ea7f3590d74687c423526699e214dd19ce079e053b1ccab109c1
[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" "862360bb5086ea7f3590d74687c423526699e214dd19ce079e053b1ccab109c1", kill_on_drop: false }`
[INFO] [stderr] warning: crate `Networker` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `networker`
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `connected_ips` should have an upper case name
[INFO] [stderr]  --> src/main.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | static mut connected_ips: Vec<String> = Vec::new();
[INFO] [stderr]   |            ^^^^^^^^^^^^^ help: convert the identifier to upper case: `CONNECTED_IPS`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `empty_ips` should have an upper case name
[INFO] [stderr]  --> src/main.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | static mut empty_ips: Vec<String> = Vec::new();
[INFO] [stderr]   |            ^^^^^^^^^ help: convert the identifier to upper case: `EMPTY_IPS`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     stdout().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/Networker-5ce68d86b233b2d1)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "862360bb5086ea7f3590d74687c423526699e214dd19ce079e053b1ccab109c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "862360bb5086ea7f3590d74687c423526699e214dd19ce079e053b1ccab109c1", kill_on_drop: false }`
[INFO] [stdout] 862360bb5086ea7f3590d74687c423526699e214dd19ce079e053b1ccab109c1