[INFO] fetching crate mdbook-api 0.4.0...
[INFO] documenting mdbook-api-0.4.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate mdbook-api 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mdbook-api 0.4.0 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-api 0.4.0
[INFO] finished tweaking crates.io crate mdbook-api 0.4.0
[INFO] tweaked toml for crates.io crate mdbook-api 0.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4cd806732bee011d6884abc87c29dcc598d96c957833e1495d1060452f976caf
[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" "4cd806732bee011d6884abc87c29dcc598d96c957833e1495d1060452f976caf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cd806732bee011d6884abc87c29dcc598d96c957833e1495d1060452f976caf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cd806732bee011d6884abc87c29dcc598d96c957833e1495d1060452f976caf", kill_on_drop: false }`
[INFO] [stdout] 4cd806732bee011d6884abc87c29dcc598d96c957833e1495d1060452f976caf
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81ebddc6b1bf958cfa6719f5db56e1272f0648c5d3617edf8c3ab178ce9811c2
[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" "81ebddc6b1bf958cfa6719f5db56e1272f0648c5d3617edf8c3ab178ce9811c2", 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]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.12
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking handlebars v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking ws v0.7.9
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling mime_guess v1.8.8
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]     Checking toml-query v0.7.0
[INFO] [stderr]    Compiling markup5ever v0.7.5
[INFO] [stderr]     Checking elasticlunr-rs v2.3.9
[INFO] [stderr]     Checking iron v0.6.1
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]    Compiling html5ever v0.22.5
[INFO] [stderr]     Checking ammonia v1.2.0
[INFO] [stderr]     Checking mdbook v0.2.3
[INFO] [stderr]  Documenting mdbook-api v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `Command { std: "docker" "inspect" "81ebddc6b1bf958cfa6719f5db56e1272f0648c5d3617edf8c3ab178ce9811c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81ebddc6b1bf958cfa6719f5db56e1272f0648c5d3617edf8c3ab178ce9811c2", kill_on_drop: false }`
[INFO] [stdout] 81ebddc6b1bf958cfa6719f5db56e1272f0648c5d3617edf8c3ab178ce9811c2