[INFO] fetching crate lc 0.2.0...
[INFO] documenting lc-0.2.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate lc 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate lc 0.2.0 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 crates.io crate lc 0.2.0
[INFO] finished tweaking crates.io crate lc 0.2.0
[INFO] tweaked toml for crates.io crate lc 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate lc 0.2.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded miow v0.3.3
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.10
[INFO] [stderr]   Downloaded tokio v0.2.16
[INFO] [stderr]   Downloaded arc-swap v0.4.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] f96d0552c2f35d6ab5872eedff4f4cf136e610766ead7b8af2b15a7da1a85ed5
[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" "f96d0552c2f35d6ab5872eedff4f4cf136e610766ead7b8af2b15a7da1a85ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f96d0552c2f35d6ab5872eedff4f4cf136e610766ead7b8af2b15a7da1a85ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f96d0552c2f35d6ab5872eedff4f4cf136e610766ead7b8af2b15a7da1a85ed5", kill_on_drop: false }`
[INFO] [stdout] f96d0552c2f35d6ab5872eedff4f4cf136e610766ead7b8af2b15a7da1a85ed5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 5e3a178d83e25ffe3ffead09adb5da30a56d5cfcf03e9f92d9a1b1eebabfe9a5
[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" "5e3a178d83e25ffe3ffead09adb5da30a56d5cfcf03e9f92d9a1b1eebabfe9a5", 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 syn v1.0.17
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]     Checking arc-swap v0.4.5
[INFO] [stderr]     Checking pin-project-lite v0.1.4
[INFO] [stderr]    Compiling openssl v0.10.28
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling encoding_rs v0.8.22
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling openssl-sys v0.9.54
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]     Checking tokio v0.2.16
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.2.4
[INFO] [stderr]     Checking hyper v0.13.4
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking reqwest v0.10.4
[INFO] [stderr]  Documenting lc v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.04s
[INFO] running `Command { std: "docker" "inspect" "5e3a178d83e25ffe3ffead09adb5da30a56d5cfcf03e9f92d9a1b1eebabfe9a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e3a178d83e25ffe3ffead09adb5da30a56d5cfcf03e9f92d9a1b1eebabfe9a5", kill_on_drop: false }`
[INFO] [stdout] 5e3a178d83e25ffe3ffead09adb5da30a56d5cfcf03e9f92d9a1b1eebabfe9a5