[INFO] cloning repository https://github.com/demostf/sync-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/demostf/sync-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdemostf%2Fsync-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdemostf%2Fsync-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cd938d0ef9ddb2bc0191b8462481e713ad7ae2f4
[INFO] documenting demostf/sync-rs 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%2Fdemostf%2Fsync-rs" "/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/demostf/sync-rs 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/demostf/sync-rs
[INFO] finished tweaking git repo https://github.com/demostf/sync-rs
[INFO] tweaked toml for git repo https://github.com/demostf/sync-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/demostf/sync-rs 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ws v0.9.1
[INFO] [stderr]   Downloaded pin-project v0.4.5
[INFO] [stderr]   Downloaded tokio-executor v0.2.0-alpha.6
[INFO] [stderr]   Downloaded once_cell v1.2.0
[INFO] [stderr]   Downloaded console v0.9.1
[INFO] [stderr]   Downloaded tracing-attributes v0.1.5
[INFO] [stderr]   Downloaded tokio-tls v0.3.0-alpha.6
[INFO] [stderr]   Downloaded tracing-core v0.1.7
[INFO] [stderr]   Downloaded portpicker v0.1.0
[INFO] [stderr]   Downloaded pin-project-internal v0.4.5
[INFO] [stderr]   Downloaded tokio-sync v0.2.0-alpha.6
[INFO] [stderr]   Downloaded tracing v0.1.10
[INFO] [stderr]   Downloaded websocket-lite v0.3.0-alpha.6
[INFO] [stderr]   Downloaded tokio-net v0.2.0-alpha.6
[INFO] [stderr]   Downloaded websocket-codec v0.2.0-alpha.6
[INFO] [stderr]   Downloaded tokio-io v0.2.0-alpha.6
[INFO] [stderr]   Downloaded enum_dispatch v0.2.0
[INFO] [stderr]   Downloaded tokio-codec v0.2.0-alpha.6
[INFO] [stderr]   Downloaded better-panic v0.2.0
[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] 00b3e1942037361984779b64438d65d1c3b2754238618aee6bf0be551643bb48
[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" "00b3e1942037361984779b64438d65d1c3b2754238618aee6bf0be551643bb48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00b3e1942037361984779b64438d65d1c3b2754238618aee6bf0be551643bb48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00b3e1942037361984779b64438d65d1c3b2754238618aee6bf0be551643bb48", kill_on_drop: false }`
[INFO] [stdout] 00b3e1942037361984779b64438d65d1c3b2754238618aee6bf0be551643bb48
[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] 52cdb8908a545c9797e46dd48ce33b4d497f39fc5a52b67b52375060c29a9003
[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" "52cdb8908a545c9797e46dd48ce33b4d497f39fc5a52b67b52375060c29a9003", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling once_cell v1.2.0
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking ws v0.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling enum_dispatch v0.2.0
[INFO] [stderr]     Checking serde v1.0.102
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]  Documenting sync v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.65s
[INFO] running `Command { std: "docker" "inspect" "52cdb8908a545c9797e46dd48ce33b4d497f39fc5a52b67b52375060c29a9003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52cdb8908a545c9797e46dd48ce33b4d497f39fc5a52b67b52375060c29a9003", kill_on_drop: false }`
[INFO] [stdout] 52cdb8908a545c9797e46dd48ce33b4d497f39fc5a52b67b52375060c29a9003