[INFO] cloning repository https://github.com/princewillahumaraeze/udp-ping
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/princewillahumaraeze/udp-ping" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprincewillahumaraeze%2Fudp-ping", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprincewillahumaraeze%2Fudp-ping'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f16e5494181f47a382b5531e46fd5dc6715b6444
[INFO] checking princewillahumaraeze/udp-ping against try#4907eac94165faff6c5e5e015670b1c584275f7b for pr-154149
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprincewillahumaraeze%2Fudp-ping" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/princewillahumaraeze/udp-ping
[INFO] finished tweaking git repo https://github.com/princewillahumaraeze/udp-ping
[INFO] tweaked toml for git repo https://github.com/princewillahumaraeze/udp-ping written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/princewillahumaraeze/udp-ping on toolchain 4907eac94165faff6c5e5e015670b1c584275f7b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/princewillahumaraeze/udp-ping already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d416b3b323a0f26ae437a7f482f76017b7642e854679e60361f5bf2aefe9776d
[INFO] running `Command { std: "docker" "start" "-a" "d416b3b323a0f26ae437a7f482f76017b7642e854679e60361f5bf2aefe9776d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d416b3b323a0f26ae437a7f482f76017b7642e854679e60361f5bf2aefe9776d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d416b3b323a0f26ae437a7f482f76017b7642e854679e60361f5bf2aefe9776d", kill_on_drop: false }`
[INFO] [stdout] d416b3b323a0f26ae437a7f482f76017b7642e854679e60361f5bf2aefe9776d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d6975dbec860bd2de25cefaae1a0f56094564777c0c96dbfce12a708cb4328f
[INFO] running `Command { std: "docker" "start" "-a" "0d6975dbec860bd2de25cefaae1a0f56094564777c0c96dbfce12a708cb4328f", kill_on_drop: false }`
[INFO] [stderr]     Checking udp-ping v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `target_addr_str` is never read
[INFO] [stdout]   --> src/main.rs:39:47
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut target_addr_str: Option<String> = None;
[INFO] [stdout]    |                                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `target_addr_str` is never read
[INFO] [stdout]   --> src/main.rs:39:47
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut target_addr_str: Option<String> = None;
[INFO] [stdout]    |                                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "0d6975dbec860bd2de25cefaae1a0f56094564777c0c96dbfce12a708cb4328f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d6975dbec860bd2de25cefaae1a0f56094564777c0c96dbfce12a708cb4328f", kill_on_drop: false }`
[INFO] [stdout] 0d6975dbec860bd2de25cefaae1a0f56094564777c0c96dbfce12a708cb4328f