[INFO] cloning repository https://github.com/AndreiKazakov/rust-regex-engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AndreiKazakov/rust-regex-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreiKazakov%2Frust-regex-engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreiKazakov%2Frust-regex-engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dddaf8646aa02b04eb55661827c70fd09d193ba2
[INFO] checking AndreiKazakov/rust-regex-engine against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreiKazakov%2Frust-regex-engine" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AndreiKazakov/rust-regex-engine 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/AndreiKazakov/rust-regex-engine
[INFO] finished tweaking git repo https://github.com/AndreiKazakov/rust-regex-engine
[INFO] tweaked toml for git repo https://github.com/AndreiKazakov/rust-regex-engine written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/AndreiKazakov/rust-regex-engine 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] running `Command { std: "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" "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] [stdout] 73396a636440cea8a16a7ce4781384d8724f275ab544c18e18d7f9bf24ba441d
[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" "73396a636440cea8a16a7ce4781384d8724f275ab544c18e18d7f9bf24ba441d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73396a636440cea8a16a7ce4781384d8724f275ab544c18e18d7f9bf24ba441d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73396a636440cea8a16a7ce4781384d8724f275ab544c18e18d7f9bf24ba441d", kill_on_drop: false }`
[INFO] [stdout] 73396a636440cea8a16a7ce4781384d8724f275ab544c18e18d7f9bf24ba441d
[INFO] running `Command { std: "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" "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] 09df5d6752e353e69b8ab013dd9d55d4705c180b3a0b307b048c4492c34aa642
[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" "09df5d6752e353e69b8ab013dd9d55d4705c180b3a0b307b048c4492c34aa642", kill_on_drop: false }`
[INFO] [stderr]     Checking re v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `walk`
[INFO] [stdout]   --> src/nfa.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn walk(nfa: NFA, text: String) -> 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 2.66s
[INFO] running `Command { std: "docker" "inspect" "09df5d6752e353e69b8ab013dd9d55d4705c180b3a0b307b048c4492c34aa642", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09df5d6752e353e69b8ab013dd9d55d4705c180b3a0b307b048c4492c34aa642", kill_on_drop: false }`
[INFO] [stdout] 09df5d6752e353e69b8ab013dd9d55d4705c180b3a0b307b048c4492c34aa642