[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 try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjinno%2Fcrackin" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sjinno/crackin on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "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-7/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" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c376af9d204b319aa5c435a757e32d1656e3f433d425583cef077e5b7600a96
[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" "1c376af9d204b319aa5c435a757e32d1656e3f433d425583cef077e5b7600a96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c376af9d204b319aa5c435a757e32d1656e3f433d425583cef077e5b7600a96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c376af9d204b319aa5c435a757e32d1656e3f433d425583cef077e5b7600a96", kill_on_drop: false }`
[INFO] [stdout] 1c376af9d204b319aa5c435a757e32d1656e3f433d425583cef077e5b7600a96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3434c5005a81c0c66e6444032afe0e5838f27d96d36dc8787c30db122ba6b70
[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" "c3434c5005a81c0c66e6444032afe0e5838f27d96d36dc8787c30db122ba6b70", 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: 1 warning emitted
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "c3434c5005a81c0c66e6444032afe0e5838f27d96d36dc8787c30db122ba6b70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3434c5005a81c0c66e6444032afe0e5838f27d96d36dc8787c30db122ba6b70", kill_on_drop: false }`
[INFO] [stdout] c3434c5005a81c0c66e6444032afe0e5838f27d96d36dc8787c30db122ba6b70