[INFO] fetching crate flowr 0.8.8...
[INFO] documenting flowr-0.8.8 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate flowr 0.8.8 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate flowr 0.8.8 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 flowr 0.8.8
[INFO] finished tweaking crates.io crate flowr 0.8.8
[INFO] tweaked toml for crates.io crate flowr 0.8.8 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate flowr 0.8.8 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 flowruntime v0.8.8
[INFO] [stderr]   Downloaded flowstdlib v0.8.9
[INFO] [stderr]   Downloaded simpath v1.3.1
[INFO] [stderr]   Downloaded provider v0.8.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 322eb10b94dfc8a0cb1fc2891654806187bdf4373790c24c263d8679bcc1b6d8
[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" "322eb10b94dfc8a0cb1fc2891654806187bdf4373790c24c263d8679bcc1b6d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "322eb10b94dfc8a0cb1fc2891654806187bdf4373790c24c263d8679bcc1b6d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "322eb10b94dfc8a0cb1fc2891654806187bdf4373790c24c263d8679bcc1b6d8", kill_on_drop: false }`
[INFO] [stdout] 322eb10b94dfc8a0cb1fc2891654806187bdf4373790c24c263d8679bcc1b6d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] e10a01ef9f95de92d1d53d00fdf4a17697cedb1bfaf8045168f0d789cd3e3c87
[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" "e10a01ef9f95de92d1d53d00fdf4a17697cedb1bfaf8045168f0d789cd3e3c87", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling curl v0.4.25
[INFO] [stderr]     Checking simpath v1.3.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.25
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parity-wasm v0.31.3
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking multimap v0.5.0
[INFO] [stderr]     Checking openssl-sys v0.9.54
[INFO] [stderr]     Checking simplog v1.2.2
[INFO] [stderr]     Checking instant v0.1.2
[INFO] [stderr]     Checking serde_json v1.0.46
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking num-rational v0.2.3
[INFO] [stderr]     Checking backtrace v0.3.43
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking flow_impl v0.8.5
[INFO] [stderr]     Checking wasmi-validation v0.1.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking wasmi v0.4.5
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking image v0.22.4
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling flow_impl_derive v0.8.5
[INFO] [stderr]     Checking flowrlib v0.8.8
[INFO] [stderr]     Checking flowruntime v0.8.8
[INFO] [stderr]     Checking provider v0.8.8
[INFO] [stderr]     Checking flowstdlib v0.8.9
[INFO] [stderr]  Documenting flowr v0.8.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 58.20s
[INFO] running `Command { std: "docker" "inspect" "e10a01ef9f95de92d1d53d00fdf4a17697cedb1bfaf8045168f0d789cd3e3c87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e10a01ef9f95de92d1d53d00fdf4a17697cedb1bfaf8045168f0d789cd3e3c87", kill_on_drop: false }`
[INFO] [stdout] e10a01ef9f95de92d1d53d00fdf4a17697cedb1bfaf8045168f0d789cd3e3c87