[INFO] updating cached repository https://github.com/konglinglong/LeetCode-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 226882679a87d0a5c18e92896a840f46f15d13c1
[INFO] checking konglinglong/LeetCode-rust against try#d93021f5faa26e4f9d2719e79f9974e06aa40e17 for pr-71873
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonglinglong%2FLeetCode-rust" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/konglinglong/LeetCode-rust on toolchain d93021f5faa26e4f9d2719e79f9974e06aa40e17
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-13/source/Cargo.toml
[INFO] crate git repo https://github.com/konglinglong/LeetCode-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7458b0aed5715af203017d75b98a1b61571714fe9fde50d923d9a414c99ad508
[INFO] running `"docker" "start" "-a" "7458b0aed5715af203017d75b98a1b61571714fe9fde50d923d9a414c99ad508"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking leet_code_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::string::String::<A>::split_off` that must be used
[INFO] [stderr]    --> src/my_atoi.rs:120:2
[INFO] [stderr]     |
[INFO] [stderr] 120 |     s.split_off(end_pos);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::string::String::<A>::split_off` that must be used
[INFO] [stderr]    --> src/my_atoi.rs:120:2
[INFO] [stderr]     |
[INFO] [stderr] 120 |     s.split_off(end_pos);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `"docker" "inspect" "7458b0aed5715af203017d75b98a1b61571714fe9fde50d923d9a414c99ad508"`
[INFO] running `"docker" "rm" "-f" "7458b0aed5715af203017d75b98a1b61571714fe9fde50d923d9a414c99ad508"`
[INFO] [stdout] 7458b0aed5715af203017d75b98a1b61571714fe9fde50d923d9a414c99ad508