[INFO] fetching crate crucible 0.0.0...
[INFO] documenting crucible-0.0.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate crucible 0.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate crucible 0.0.0 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 crucible 0.0.0
[INFO] finished tweaking crates.io crate crucible 0.0.0
[INFO] tweaked toml for crates.io crate crucible 0.0.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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 waterfall v0.7.1
[INFO] [stderr]   Downloaded mpmc v0.1.5
[INFO] [stderr]   Downloaded allan v0.2.4
[INFO] [stderr]   Downloaded heatmap v0.6.6
[INFO] [stderr]   Downloaded clocksource v0.2.4
[INFO] [stderr]   Downloaded tiny_http v0.5.9
[INFO] [stderr]   Downloaded histogram v0.6.9
[INFO] [stderr]   Downloaded rusttype v0.1.2
[INFO] [stderr]   Downloaded stb_truetype v0.1.2
[INFO] [stderr]   Downloaded tic v0.2.4
[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] fe4f40076e35d9d6e1b877e3890c26383a54bad5259635e12df37e5ef121627a
[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" "fe4f40076e35d9d6e1b877e3890c26383a54bad5259635e12df37e5ef121627a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe4f40076e35d9d6e1b877e3890c26383a54bad5259635e12df37e5ef121627a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe4f40076e35d9d6e1b877e3890c26383a54bad5259635e12df37e5ef121627a", kill_on_drop: false }`
[INFO] [stdout] fe4f40076e35d9d6e1b877e3890c26383a54bad5259635e12df37e5ef121627a
[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] 600c64c35c6173a0568a1a30f76b8bdd2e7b249ad12ceef29661f1ff8a91c29a
[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" "600c64c35c6173a0568a1a30f76b8bdd2e7b249ad12ceef29661f1ff8a91c29a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking odds v0.2.26
[INFO] [stderr]     Checking histogram v0.6.9
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking chunked_transfer v0.3.1
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking hsl v0.1.1
[INFO] [stderr]     Checking allan v0.2.4
[INFO] [stderr]     Checking mpmc v0.1.5
[INFO] [stderr]     Checking stb_truetype v0.1.2
[INFO] [stderr]     Checking clocksource v0.2.4
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking uuid v0.1.18
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking heatmap v0.6.6
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking url v0.2.38
[INFO] [stderr]     Checking arrayvec v0.3.25
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]     Checking rusttype v0.1.2
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking waterfall v0.7.1
[INFO] [stderr]     Checking tiny_http v0.5.9
[INFO] [stderr]     Checking tic v0.2.4
[INFO] [stderr]  Documenting crucible v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.39s
[INFO] running `Command { std: "docker" "inspect" "600c64c35c6173a0568a1a30f76b8bdd2e7b249ad12ceef29661f1ff8a91c29a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "600c64c35c6173a0568a1a30f76b8bdd2e7b249ad12ceef29661f1ff8a91c29a", kill_on_drop: false }`
[INFO] [stdout] 600c64c35c6173a0568a1a30f76b8bdd2e7b249ad12ceef29661f1ff8a91c29a