[INFO] updating cached repository https://github.com/scjudd/ac-trainer
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] From https://github.com/scjudd/ac-trainer
[INFO] [stderr]    6b5d9ce..cd59eb1  master         -> master
[INFO] [stderr]  + 9c790fd...5b56c8f unlimited-ammo -> unlimited-ammo  (forced update)
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cd59eb10f5987dfc42b071a595105d887961f202
[INFO] checking scjudd/ac-trainer against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscjudd%2Fac-trainer" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/scjudd/ac-trainer on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/scjudd/ac-trainer
[INFO] finished tweaking git repo https://github.com/scjudd/ac-trainer
[INFO] tweaked toml for git repo https://github.com/scjudd/ac-trainer written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/scjudd/ac-trainer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "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] 2bb4cbbcddace83bff89025b8ab3b79235d654eb66fed5075a8492ec80a8ae8c
[INFO] running `Command { std: "docker" "start" "-a" "2bb4cbbcddace83bff89025b8ab3b79235d654eb66fed5075a8492ec80a8ae8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bb4cbbcddace83bff89025b8ab3b79235d654eb66fed5075a8492ec80a8ae8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bb4cbbcddace83bff89025b8ab3b79235d654eb66fed5075a8492ec80a8ae8c", kill_on_drop: false }`
[INFO] [stdout] 2bb4cbbcddace83bff89025b8ab3b79235d654eb66fed5075a8492ec80a8ae8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1649288e5548a7a0550fdcb6e8746bfafb39120a4b88415481905d5e5d835bf9
[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" "1649288e5548a7a0550fdcb6e8746bfafb39120a4b88415481905d5e5d835bf9", kill_on_drop: false }`
[INFO] [stderr]    Compiling ac-trainer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `disable`
[INFO] [stdout]   --> src/code.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn disable(&self, handle: proc::Handle) -> Result<(), String> {
[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: associated function is never used: `disable`
[INFO] [stdout]   --> src/code.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn disable(&self, handle: proc::Handle) -> Result<(), String> {
[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 1.11s
[INFO] running `Command { std: "docker" "inspect" "1649288e5548a7a0550fdcb6e8746bfafb39120a4b88415481905d5e5d835bf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1649288e5548a7a0550fdcb6e8746bfafb39120a4b88415481905d5e5d835bf9", kill_on_drop: false }`
[INFO] [stdout] 1649288e5548a7a0550fdcb6e8746bfafb39120a4b88415481905d5e5d835bf9