[INFO] updating cached repository https://github.com/paritytech/subdb
[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] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 353bd49a95e618641b552fe890b272f0feb6d752
[INFO] documenting paritytech/subdb against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparitytech%2Fsubdb" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paritytech/subdb 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/paritytech/subdb
[INFO] finished tweaking git repo https://github.com/paritytech/subdb
[INFO] tweaked toml for git repo https://github.com/paritytech/subdb written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/paritytech/subdb 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 91d157b45a32db8831b65fc5ed0a6b0bf392ead134bf48b8b478230d987ef8d3
[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" "91d157b45a32db8831b65fc5ed0a6b0bf392ead134bf48b8b478230d987ef8d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91d157b45a32db8831b65fc5ed0a6b0bf392ead134bf48b8b478230d987ef8d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91d157b45a32db8831b65fc5ed0a6b0bf392ead134bf48b8b478230d987ef8d3", kill_on_drop: false }`
[INFO] [stdout] 91d157b45a32db8831b65fc5ed0a6b0bf392ead134bf48b8b478230d987ef8d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] e2e80bfa90b9ca6dd1c4c9bb107bbb39430c6191f5eb1ebfa0dfa20fc4338f78
[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" "e2e80bfa90b9ca6dd1c4c9bb107bbb39430c6191f5eb1ebfa0dfa20fc4338f78", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking hash-db v0.15.2
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking num-integer v0.1.42
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking simplelog v0.7.5
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling proc-macro-crate v0.1.4
[INFO] [stderr]    Compiling parity-util-mem-derive v0.1.0
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.1.3
[INFO] [stderr]    Compiling parity-scale-codec-derive v1.2.0
[INFO] [stderr]    Compiling derive_more v0.99.5
[INFO] [stderr]     Checking parity-scale-codec v1.3.0
[INFO] [stderr]     Checking parity-util-mem v0.6.0
[INFO] [stderr]     Checking kvdb v0.5.0
[INFO] [stderr]     Checking sp-database v2.0.0-alpha.5 (https://github.com/paritytech/substrate?branch=gav-db-trait#ad4b0107)
[INFO] [stderr]  Documenting subdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `Command { std: "docker" "inspect" "e2e80bfa90b9ca6dd1c4c9bb107bbb39430c6191f5eb1ebfa0dfa20fc4338f78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2e80bfa90b9ca6dd1c4c9bb107bbb39430c6191f5eb1ebfa0dfa20fc4338f78", kill_on_drop: false }`
[INFO] [stdout] e2e80bfa90b9ca6dd1c4c9bb107bbb39430c6191f5eb1ebfa0dfa20fc4338f78