[INFO] fetching crate subfilter 0.3.0...
[INFO] documenting subfilter-0.3.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate subfilter 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate subfilter 0.3.0 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 subfilter 0.3.0
[INFO] finished tweaking crates.io crate subfilter 0.3.0
[INFO] tweaked toml for crates.io crate subfilter 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate subfilter 0.3.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded subparse v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] e2a9de480c36f33141e9bdb0d169b3366f8b4bf7d7c4aa5fca0b8b3e58dc1a48
[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" "e2a9de480c36f33141e9bdb0d169b3366f8b4bf7d7c4aa5fca0b8b3e58dc1a48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2a9de480c36f33141e9bdb0d169b3366f8b4bf7d7c4aa5fca0b8b3e58dc1a48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2a9de480c36f33141e9bdb0d169b3366f8b4bf7d7c4aa5fca0b8b3e58dc1a48", kill_on_drop: false }`
[INFO] [stdout] e2a9de480c36f33141e9bdb0d169b3366f8b4bf7d7c4aa5fca0b8b3e58dc1a48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] efb5827ca43f0a024569dcae759a9eeab48783393032d85351a6840920ef1d5b
[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" "efb5827ca43f0a024569dcae759a9eeab48783393032d85351a6840920ef1d5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.27
[INFO] [stderr]     Checking gimli v0.21.0
[INFO] [stderr]    Compiling standback v0.2.8
[INFO] [stderr]     Checking object v0.19.0
[INFO] [stderr]     Checking nom v2.1.0
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling time v0.2.16
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking combine v2.5.2
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]     Checking addr2line v0.12.1
[INFO] [stderr]     Checking backtrace v0.3.48
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking vobsub v0.2.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]     Checking subparse v0.6.2
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]     Checking structopt v0.3.14
[INFO] [stderr]  Documenting subfilter v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.86s
[INFO] running `Command { std: "docker" "inspect" "efb5827ca43f0a024569dcae759a9eeab48783393032d85351a6840920ef1d5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efb5827ca43f0a024569dcae759a9eeab48783393032d85351a6840920ef1d5b", kill_on_drop: false }`
[INFO] [stdout] efb5827ca43f0a024569dcae759a9eeab48783393032d85351a6840920ef1d5b