[INFO] cloning repository https://github.com/enrico-kaack/Rust-Google-Hash-Code-2020
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/enrico-kaack/Rust-Google-Hash-Code-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenrico-kaack%2FRust-Google-Hash-Code-2020"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenrico-kaack%2FRust-Google-Hash-Code-2020'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 93255cdebe3a2351c2729645590b8304101ab04b
[INFO] checking enrico-kaack/Rust-Google-Hash-Code-2020 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenrico-kaack%2FRust-Google-Hash-Code-2020" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/enrico-kaack/Rust-Google-Hash-Code-2020 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/enrico-kaack/Rust-Google-Hash-Code-2020
[INFO] finished tweaking git repo https://github.com/enrico-kaack/Rust-Google-Hash-Code-2020
[INFO] tweaked toml for git repo https://github.com/enrico-kaack/Rust-Google-Hash-Code-2020 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/enrico-kaack/Rust-Google-Hash-Code-2020 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-2/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] 40dc04d566dd254583de0897f291afe5815600bef1c9f9f52b5f65535572f4b6
[INFO] running `"docker" "start" "-a" "40dc04d566dd254583de0897f291afe5815600bef1c9f9f52b5f65535572f4b6"`
[INFO] [stderr]     Checking rust_hash_code_2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: crate `RustHashCode` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `rust_hash_code`
[INFO] [stderr] 
[INFO] [stderr] warning: crate `RustHashCode` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `rust_hash_code`
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "40dc04d566dd254583de0897f291afe5815600bef1c9f9f52b5f65535572f4b6"`
[INFO] running `"docker" "rm" "-f" "40dc04d566dd254583de0897f291afe5815600bef1c9f9f52b5f65535572f4b6"`
[INFO] [stdout] 40dc04d566dd254583de0897f291afe5815600bef1c9f9f52b5f65535572f4b6