[INFO] cloning repository https://github.com/skorobogatydmitry/ipv4-classify
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/skorobogatydmitry/ipv4-classify" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskorobogatydmitry%2Fipv4-classify", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskorobogatydmitry%2Fipv4-classify'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75867f352a74c996bbf7ed76e1741070bf018814
[INFO] checking skorobogatydmitry/ipv4-classify against try#8d46be77cd48fdbcced888d027457e2c9cf2aa16 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskorobogatydmitry%2Fipv4-classify" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/skorobogatydmitry/ipv4-classify on toolchain 8d46be77cd48fdbcced888d027457e2c9cf2aa16
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/skorobogatydmitry/ipv4-classify
[INFO] finished tweaking git repo https://github.com/skorobogatydmitry/ipv4-classify
[INFO] tweaked toml for git repo https://github.com/skorobogatydmitry/ipv4-classify written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/skorobogatydmitry/ipv4-classify 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" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a042f46df206a6f8ea99a8ae3b787c0f3e8b7cef4de0049f51d747f535a99c6
[INFO] running `Command { std: "docker" "start" "-a" "6a042f46df206a6f8ea99a8ae3b787c0f3e8b7cef4de0049f51d747f535a99c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a042f46df206a6f8ea99a8ae3b787c0f3e8b7cef4de0049f51d747f535a99c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a042f46df206a6f8ea99a8ae3b787c0f3e8b7cef4de0049f51d747f535a99c6", kill_on_drop: false }`
[INFO] [stdout] 6a042f46df206a6f8ea99a8ae3b787c0f3e8b7cef4de0049f51d747f535a99c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d55bacfbf7d64ba90dbb1984ef2abe0a4ab68fc1850d86f81f7dd1ab51bc5927
[INFO] running `Command { std: "docker" "start" "-a" "d55bacfbf7d64ba90dbb1984ef2abe0a4ab68fc1850d86f81f7dd1ab51bc5927", kill_on_drop: false }`
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking ipv4-classify v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `net::Ipv4Addr` and `ops::Sub`
[INFO] [stdout]  --> src/test.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{net::Ipv4Addr, ops::Sub, str::FromStr};
[INFO] [stdout]   |           ^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `str::FromStr`
[INFO] [stdout]  --> src/test.rs:2:36
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{net::Ipv4Addr, ops::Sub, str::FromStr};
[INFO] [stdout]   |                                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/test.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let s = Subnet::from_str("1.2.3.4/35").unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "d55bacfbf7d64ba90dbb1984ef2abe0a4ab68fc1850d86f81f7dd1ab51bc5927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d55bacfbf7d64ba90dbb1984ef2abe0a4ab68fc1850d86f81f7dd1ab51bc5927", kill_on_drop: false }`
[INFO] [stdout] d55bacfbf7d64ba90dbb1984ef2abe0a4ab68fc1850d86f81f7dd1ab51bc5927