[INFO] cloning repository https://github.com/10thfloor/rusty-chain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/10thfloor/rusty-chain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F10thfloor%2Frusty-chain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F10thfloor%2Frusty-chain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 14bf314749c5ce1e629c32494c42c0757e02a462
[INFO] documenting 10thfloor/rusty-chain against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F10thfloor%2Frusty-chain" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/10thfloor/rusty-chain on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/10thfloor/rusty-chain
[INFO] finished tweaking git repo https://github.com/10thfloor/rusty-chain
[INFO] tweaked toml for git repo https://github.com/10thfloor/rusty-chain written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/10thfloor/rusty-chain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "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] 7938cde2f8decbe0b5ff6d1a3b3c0d5fb1921bc654c250212e5f116f81c4216e
[INFO] running `Command { std: "docker" "start" "-a" "7938cde2f8decbe0b5ff6d1a3b3c0d5fb1921bc654c250212e5f116f81c4216e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7938cde2f8decbe0b5ff6d1a3b3c0d5fb1921bc654c250212e5f116f81c4216e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7938cde2f8decbe0b5ff6d1a3b3c0d5fb1921bc654c250212e5f116f81c4216e", kill_on_drop: false }`
[INFO] [stdout] 7938cde2f8decbe0b5ff6d1a3b3c0d5fb1921bc654c250212e5f116f81c4216e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0e601f5d668c11a18e55f4af9a0744e47fb672ccd0ac1fcd7aa54b253b9a9f0
[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" "f0e601f5d668c11a18e55f4af9a0744e47fb672ccd0ac1fcd7aa54b253b9a9f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]  Documenting blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.77s
[INFO] running `Command { std: "docker" "inspect" "f0e601f5d668c11a18e55f4af9a0744e47fb672ccd0ac1fcd7aa54b253b9a9f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0e601f5d668c11a18e55f4af9a0744e47fb672ccd0ac1fcd7aa54b253b9a9f0", kill_on_drop: false }`
[INFO] [stdout] f0e601f5d668c11a18e55f4af9a0744e47fb672ccd0ac1fcd7aa54b253b9a9f0