[INFO] cloning repository https://github.com/darthsteedious/better_json_generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/darthsteedious/better_json_generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarthsteedious%2Fbetter_json_generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarthsteedious%2Fbetter_json_generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d8e7ee1e909d5b77e3db06d7839426ad62f2706
[INFO] documenting darthsteedious/better_json_generator against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarthsteedious%2Fbetter_json_generator" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/darthsteedious/better_json_generator on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/darthsteedious/better_json_generator
[INFO] finished tweaking git repo https://github.com/darthsteedious/better_json_generator
[INFO] tweaked toml for git repo https://github.com/darthsteedious/better_json_generator written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/darthsteedious/better_json_generator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0527eaf1b6e695dd5886d548a7ff11dae1100d81dec5cacca4d4cb926485d3ba
[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" "0527eaf1b6e695dd5886d548a7ff11dae1100d81dec5cacca4d4cb926485d3ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0527eaf1b6e695dd5886d548a7ff11dae1100d81dec5cacca4d4cb926485d3ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0527eaf1b6e695dd5886d548a7ff11dae1100d81dec5cacca4d4cb926485d3ba", kill_on_drop: false }`
[INFO] [stdout] 0527eaf1b6e695dd5886d548a7ff11dae1100d81dec5cacca4d4cb926485d3ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4681055e0ddccc539fef433ff2473acfc0d9081c5afc839d2cffcde53c05eac9
[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" "4681055e0ddccc539fef433ff2473acfc0d9081c5afc839d2cffcde53c05eac9", kill_on_drop: false }`
[INFO] [stderr]  Documenting better_json_generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "4681055e0ddccc539fef433ff2473acfc0d9081c5afc839d2cffcde53c05eac9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4681055e0ddccc539fef433ff2473acfc0d9081c5afc839d2cffcde53c05eac9", kill_on_drop: false }`
[INFO] [stdout] 4681055e0ddccc539fef433ff2473acfc0d9081c5afc839d2cffcde53c05eac9