[INFO] cloning repository https://github.com/SerhoLiu/eakio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SerhoLiu/eakio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSerhoLiu%2Feakio", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSerhoLiu%2Feakio'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa7366878294a2525f8c0d32dc0079c1e8c605ee
[INFO] documenting SerhoLiu/eakio against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSerhoLiu%2Feakio" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SerhoLiu/eakio on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SerhoLiu/eakio
[INFO] finished tweaking git repo https://github.com/SerhoLiu/eakio
[INFO] tweaked toml for git repo https://github.com/SerhoLiu/eakio written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/SerhoLiu/eakio already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c1402440a3a1db4d3be12956bac6782c4520c46a984d94dee9a5bc911359c06
[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" "4c1402440a3a1db4d3be12956bac6782c4520c46a984d94dee9a5bc911359c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c1402440a3a1db4d3be12956bac6782c4520c46a984d94dee9a5bc911359c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c1402440a3a1db4d3be12956bac6782c4520c46a984d94dee9a5bc911359c06", kill_on_drop: false }`
[INFO] [stdout] 4c1402440a3a1db4d3be12956bac6782c4520c46a984d94dee9a5bc911359c06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42c5c0f740c749792006838466230fbcfa4b687bf3172a649b0e6b6783df76da
[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" "42c5c0f740c749792006838466230fbcfa4b687bf3172a649b0e6b6783df76da", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]    Compiling either v1.4.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]     Checking same-file v1.0.1
[INFO] [stderr]     Checking untrusted v0.5.1
[INFO] [stderr]     Checking serde v1.0.27
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking crossbeam v0.3.0
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking walkdir v2.0.1
[INFO] [stderr]    Compiling coco v0.1.1
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking rpassword v2.0.0
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]    Compiling rand v0.3.19
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]     Checking regex v0.2.5
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]    Compiling ring v0.12.1
[INFO] [stderr]     Checking docopt v0.8.1
[INFO] [stderr]  Documenting eakio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.16s
[INFO] running `Command { std: "docker" "inspect" "42c5c0f740c749792006838466230fbcfa4b687bf3172a649b0e6b6783df76da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c5c0f740c749792006838466230fbcfa4b687bf3172a649b0e6b6783df76da", kill_on_drop: false }`
[INFO] [stdout] 42c5c0f740c749792006838466230fbcfa4b687bf3172a649b0e6b6783df76da