[INFO] cloning repository https://github.com/kencani/sub_home_basic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kencani/sub_home_basic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkencani%2Fsub_home_basic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkencani%2Fsub_home_basic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74bed2a5a9bbb8190bf867b2d69e67f274ab22f9
[INFO] checking kencani/sub_home_basic against master#336209eef13882bd1e211b24779584cb7ef911eb for pr-129249
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkencani%2Fsub_home_basic" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kencani/sub_home_basic on toolchain 336209eef13882bd1e211b24779584cb7ef911eb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kencani/sub_home_basic
[INFO] finished tweaking git repo https://github.com/kencani/sub_home_basic
[INFO] tweaked toml for git repo https://github.com/kencani/sub_home_basic written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kencani/sub_home_basic 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" "+336209eef13882bd1e211b24779584cb7ef911eb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80c603d425a97b19b54f925305b002a7d08d31af693c8ec7aa298d08a9cfb9f7
[INFO] running `Command { std: "docker" "start" "-a" "80c603d425a97b19b54f925305b002a7d08d31af693c8ec7aa298d08a9cfb9f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80c603d425a97b19b54f925305b002a7d08d31af693c8ec7aa298d08a9cfb9f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80c603d425a97b19b54f925305b002a7d08d31af693c8ec7aa298d08a9cfb9f7", kill_on_drop: false }`
[INFO] [stdout] 80c603d425a97b19b54f925305b002a7d08d31af693c8ec7aa298d08a9cfb9f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 858f9eebe99d456ea1a09c7b687e2fc84f35b4ccfea39a775914f59ba7482a20
[INFO] running `Command { std: "docker" "start" "-a" "858f9eebe99d456ea1a09c7b687e2fc84f35b4ccfea39a775914f59ba7482a20", kill_on_drop: false }`
[INFO] [stderr]     Checking sub_class_2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BufRead` and `BufReader`
[INFO] [stdout]  --> src/tcp_server.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Read, Write, Error, BufRead, BufReader, };
[INFO] [stdout]   |                                   ^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead` and `BufReader`
[INFO] [stdout]  --> src/tcp_server.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Read, Write, Error, BufRead, BufReader, };
[INFO] [stdout]   |                                   ^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "858f9eebe99d456ea1a09c7b687e2fc84f35b4ccfea39a775914f59ba7482a20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "858f9eebe99d456ea1a09c7b687e2fc84f35b4ccfea39a775914f59ba7482a20", kill_on_drop: false }`
[INFO] [stdout] 858f9eebe99d456ea1a09c7b687e2fc84f35b4ccfea39a775914f59ba7482a20