[INFO] fetching crate prj 0.1.0...
[INFO] documenting prj-0.1.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate prj 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate prj 0.1.0 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 prj 0.1.0
[INFO] finished tweaking crates.io crate prj 0.1.0
[INFO] tweaked toml for crates.io crate prj 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate prj 0.1.0 already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35111ba0a08f9f78b0332f9f45c76186057f7cde965c2ad22cfa197230cced26
[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" "35111ba0a08f9f78b0332f9f45c76186057f7cde965c2ad22cfa197230cced26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35111ba0a08f9f78b0332f9f45c76186057f7cde965c2ad22cfa197230cced26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35111ba0a08f9f78b0332f9f45c76186057f7cde965c2ad22cfa197230cced26", kill_on_drop: false }`
[INFO] [stdout] 35111ba0a08f9f78b0332f9f45c76186057f7cde965c2ad22cfa197230cced26
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dce2e9461b5a9dca4a5c0bd924bc23a48e5744c8964294f83b57e84d3342e80a
[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" "dce2e9461b5a9dca4a5c0bd924bc23a48e5744c8964294f83b57e84d3342e80a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]    Compiling jobserver v0.1.19
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking term_size v1.0.0-beta1
[INFO] [stderr]     Checking fuzzy-matcher v0.3.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking signal-hook v0.1.12
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking crossterm v0.14.2
[INFO] [stderr]    Compiling openssl-sys v0.9.53
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libssh2-sys v0.2.14
[INFO] [stderr]    Compiling libgit2-sys v0.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking git2 v0.11.0
[INFO] [stderr]  Documenting prj v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.36s
[INFO] running `Command { std: "docker" "inspect" "dce2e9461b5a9dca4a5c0bd924bc23a48e5744c8964294f83b57e84d3342e80a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dce2e9461b5a9dca4a5c0bd924bc23a48e5744c8964294f83b57e84d3342e80a", kill_on_drop: false }`
[INFO] [stdout] dce2e9461b5a9dca4a5c0bd924bc23a48e5744c8964294f83b57e84d3342e80a