[INFO] cloning repository https://github.com/leshow/finger-tokio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leshow/finger-tokio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleshow%2Ffinger-tokio", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleshow%2Ffinger-tokio'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6663b59d84d7cf64e6320e26afafea2793ec7da0
[INFO] documenting leshow/finger-tokio against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleshow%2Ffinger-tokio" "/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/leshow/finger-tokio on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leshow/finger-tokio
[INFO] finished tweaking git repo https://github.com/leshow/finger-tokio
[INFO] tweaked toml for git repo https://github.com/leshow/finger-tokio written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/leshow/finger-tokio already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc25c290c1fdb2614094ebcc617593ad0564df53ded83ec26bd4a6dd220170ec
[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" "fc25c290c1fdb2614094ebcc617593ad0564df53ded83ec26bd4a6dd220170ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc25c290c1fdb2614094ebcc617593ad0564df53ded83ec26bd4a6dd220170ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc25c290c1fdb2614094ebcc617593ad0564df53ded83ec26bd4a6dd220170ec", kill_on_drop: false }`
[INFO] [stdout] fc25c290c1fdb2614094ebcc617593ad0564df53ded83ec26bd4a6dd220170ec
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e6cba40684fc0d9838a44e4d6397c9f57af53639cf8c84a16273d0c5db78ae3
[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" "0e6cba40684fc0d9838a44e4d6397c9f57af53639cf8c84a16273d0c5db78ae3", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.24
[INFO] [stderr]     Checking futures v0.1.14
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.1
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking iovec v0.1.0
[INFO] [stderr]     Checking net2 v0.2.29
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]     Checking hostname v0.1.3
[INFO] [stderr]     Checking bytes v0.4.4
[INFO] [stderr]     Checking mio v0.6.9
[INFO] [stderr]     Checking tokio-io v0.1.2
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking futures-cpupool v0.1.5
[INFO] [stderr]     Checking tokio-core v0.1.8
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]  Documenting echo-proto v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.86s
[INFO] running `Command { std: "docker" "inspect" "0e6cba40684fc0d9838a44e4d6397c9f57af53639cf8c84a16273d0c5db78ae3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e6cba40684fc0d9838a44e4d6397c9f57af53639cf8c84a16273d0c5db78ae3", kill_on_drop: false }`
[INFO] [stdout] 0e6cba40684fc0d9838a44e4d6397c9f57af53639cf8c84a16273d0c5db78ae3