[INFO] fetching crate erst-prepare 0.2.6...
[INFO] documenting erst-prepare-0.2.6 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate erst-prepare 0.2.6 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate erst-prepare 0.2.6 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate erst-prepare 0.2.6
[INFO] finished tweaking crates.io crate erst-prepare 0.2.6
[INFO] tweaked toml for crates.io crate erst-prepare 0.2.6 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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" "+1.47.0" "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] 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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcf6e4c224148459490ae864338ff0e5c100feab8ce4312fa2f5d5544dee4ade
[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" "bcf6e4c224148459490ae864338ff0e5c100feab8ce4312fa2f5d5544dee4ade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcf6e4c224148459490ae864338ff0e5c100feab8ce4312fa2f5d5544dee4ade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcf6e4c224148459490ae864338ff0e5c100feab8ce4312fa2f5d5544dee4ade", kill_on_drop: false }`
[INFO] [stdout] bcf6e4c224148459490ae864338ff0e5c100feab8ce4312fa2f5d5544dee4ade
[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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1198bbff1234c88754b6d467c02c949a41f78a55ddff72c79e42f944e77390d
[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" "b1198bbff1234c88754b6d467c02c949a41f78a55ddff72c79e42f944e77390d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking bstr v0.1.4
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]     Checking erst-shared v0.2.6
[INFO] [stderr]  Documenting erst-prepare v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.22s
[INFO] running `Command { std: "docker" "inspect" "b1198bbff1234c88754b6d467c02c949a41f78a55ddff72c79e42f944e77390d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1198bbff1234c88754b6d467c02c949a41f78a55ddff72c79e42f944e77390d", kill_on_drop: false }`
[INFO] [stdout] b1198bbff1234c88754b6d467c02c949a41f78a55ddff72c79e42f944e77390d
