[INFO] cloning repository https://github.com/manfredlotz/jsonlint
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/manfredlotz/jsonlint" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmanfredlotz%2Fjsonlint", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmanfredlotz%2Fjsonlint'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94110e8b4a9b4b868ec53d101b71f3932a7d86cc
[INFO] documenting manfredlotz/jsonlint 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%2Fmanfredlotz%2Fjsonlint" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/manfredlotz/jsonlint 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/manfredlotz/jsonlint
[INFO] finished tweaking git repo https://github.com/manfredlotz/jsonlint
[INFO] tweaked toml for git repo https://github.com/manfredlotz/jsonlint written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/manfredlotz/jsonlint 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 10e738e286695f118f5f75f475fc9ce2e1ffbabbcac36f4b67d7a2e05f726f57
[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" "10e738e286695f118f5f75f475fc9ce2e1ffbabbcac36f4b67d7a2e05f726f57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10e738e286695f118f5f75f475fc9ce2e1ffbabbcac36f4b67d7a2e05f726f57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10e738e286695f118f5f75f475fc9ce2e1ffbabbcac36f4b67d7a2e05f726f57", kill_on_drop: false }`
[INFO] [stdout] 10e738e286695f118f5f75f475fc9ce2e1ffbabbcac36f4b67d7a2e05f726f57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3cdaa5b17ed31432dd62f20360e64686db8f8fe9f46c9382e2b8874bf03e9cfb
[INFO] running `Command { std: "docker" "start" "-a" "3cdaa5b17ed31432dd62f20360e64686db8f8fe9f46c9382e2b8874bf03e9cfb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.17
[INFO] [stderr]    Compiling serde v1.0.76
[INFO] [stderr]     Checking itoa v0.4.2
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling structopt-derive v0.2.10
[INFO] [stderr]     Checking structopt v0.2.10
[INFO] [stderr]     Checking serde_json v1.0.26
[INFO] [stderr]  Documenting jsonlint v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.22s
[INFO] running `Command { std: "docker" "inspect" "3cdaa5b17ed31432dd62f20360e64686db8f8fe9f46c9382e2b8874bf03e9cfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cdaa5b17ed31432dd62f20360e64686db8f8fe9f46c9382e2b8874bf03e9cfb", kill_on_drop: false }`
[INFO] [stdout] 3cdaa5b17ed31432dd62f20360e64686db8f8fe9f46c9382e2b8874bf03e9cfb