[INFO] cloning repository https://github.com/konglinglong/LeetCode-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/konglinglong/LeetCode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonglinglong%2FLeetCode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonglinglong%2FLeetCode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 226882679a87d0a5c18e92896a840f46f15d13c1
[INFO] checking konglinglong/LeetCode-rust against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonglinglong%2FLeetCode-rust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/konglinglong/LeetCode-rust on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/konglinglong/LeetCode-rust
[INFO] finished tweaking git repo https://github.com/konglinglong/LeetCode-rust
[INFO] tweaked toml for git repo https://github.com/konglinglong/LeetCode-rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/konglinglong/LeetCode-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 92aa4d3348269dcf286026881756eb04d1119704b0c1b82a9800022a2b6e9131
[INFO] running `Command { std: "docker" "start" "-a" "92aa4d3348269dcf286026881756eb04d1119704b0c1b82a9800022a2b6e9131", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92aa4d3348269dcf286026881756eb04d1119704b0c1b82a9800022a2b6e9131", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92aa4d3348269dcf286026881756eb04d1119704b0c1b82a9800022a2b6e9131", kill_on_drop: false }`
[INFO] [stdout] 92aa4d3348269dcf286026881756eb04d1119704b0c1b82a9800022a2b6e9131
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14918c41fcbf01c58f2e7432af353a4e69130f2bac7af1d7b1bf21ae110149b1
[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" "14918c41fcbf01c58f2e7432af353a4e69130f2bac7af1d7b1bf21ae110149b1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking leet_code_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `String::split_off` that must be used
[INFO] [stdout]    --> src/my_atoi.rs:120:2
[INFO] [stdout]     |
[INFO] [stdout] 120 |     s.split_off(end_pos);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::split_off` that must be used
[INFO] [stdout]    --> src/my_atoi.rs:120:2
[INFO] [stdout]     |
[INFO] [stdout] 120 |     s.split_off(end_pos);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "14918c41fcbf01c58f2e7432af353a4e69130f2bac7af1d7b1bf21ae110149b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14918c41fcbf01c58f2e7432af353a4e69130f2bac7af1d7b1bf21ae110149b1", kill_on_drop: false }`
[INFO] [stdout] 14918c41fcbf01c58f2e7432af353a4e69130f2bac7af1d7b1bf21ae110149b1