[INFO] cloning repository https://github.com/sjinno/crackin
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sjinno/crackin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjinno%2Fcrackin", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjinno%2Fcrackin'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b71c2497c5b33976609b2899fd519d2c246978cd
[INFO] checking sjinno/crackin against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjinno%2Fcrackin" "/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/sjinno/crackin on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sjinno/crackin
[INFO] finished tweaking git repo https://github.com/sjinno/crackin
[INFO] tweaked toml for git repo https://github.com/sjinno/crackin written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/sjinno/crackin already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "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-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" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d5e4121ade607fc4304a1b340f2322404665102459f2a84bd46c90c3a6b07ae
[INFO] running `Command { std: "docker" "start" "-a" "1d5e4121ade607fc4304a1b340f2322404665102459f2a84bd46c90c3a6b07ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d5e4121ade607fc4304a1b340f2322404665102459f2a84bd46c90c3a6b07ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d5e4121ade607fc4304a1b340f2322404665102459f2a84bd46c90c3a6b07ae", kill_on_drop: false }`
[INFO] [stdout] 1d5e4121ade607fc4304a1b340f2322404665102459f2a84bd46c90c3a6b07ae
[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" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85c8fb46a3c5b152d4522b6db83aeb42e2a2fe80251c7186a42f7545097cc3fc
[INFO] running `Command { std: "docker" "start" "-a" "85c8fb46a3c5b152d4522b6db83aeb42e2a2fe80251c7186a42f7545097cc3fc", kill_on_drop: false }`
[INFO] [stderr]     Checking crackin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `is_substring`
[INFO] [stdout]    --> src/ch_01.rs:202:4
[INFO] [stdout]     |
[INFO] [stdout] 202 | fn is_substring(s1: &str, s2: &str) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_substring`
[INFO] [stdout]    --> src/ch_01.rs:202:4
[INFO] [stdout]     |
[INFO] [stdout] 202 | fn is_substring(s1: &str, s2: &str) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "85c8fb46a3c5b152d4522b6db83aeb42e2a2fe80251c7186a42f7545097cc3fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85c8fb46a3c5b152d4522b6db83aeb42e2a2fe80251c7186a42f7545097cc3fc", kill_on_drop: false }`
[INFO] [stdout] 85c8fb46a3c5b152d4522b6db83aeb42e2a2fe80251c7186a42f7545097cc3fc