[INFO] fetching crate topngx 0.3.1...
[INFO] documenting topngx-0.3.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate topngx 0.3.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate topngx 0.3.1 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] removed /workspace/builds/worker-6/source/.cargo/config
[INFO] started tweaking crates.io crate topngx 0.3.1
[INFO] finished tweaking crates.io crate topngx 0.3.1
[INFO] tweaked toml for crates.io crate topngx 0.3.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate topngx 0.3.1 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 syn v1.0.33
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.2
[INFO] [stderr]   Downloaded anyhow v1.0.31
[INFO] [stderr]   Downloaded tabwriter v1.2.1
[INFO] [stderr]   Downloaded structopt-derive v0.4.8
[INFO] [stderr]   Downloaded once_cell v1.4.0
[INFO] [stderr]   Downloaded fallible-iterator v0.2.0
[INFO] [stderr]   Downloaded crossterm v0.17.5
[INFO] [stderr]   Downloaded nix v0.17.0
[INFO] [stderr]   Downloaded fallible-streaming-iterator v0.1.9
[INFO] [stderr]   Downloaded structopt v0.3.15
[INFO] [stderr]   Downloaded libsqlite3-sys v0.18.0
[INFO] [stderr]   Downloaded ctrlc v3.1.4
[INFO] [stderr]   Downloaded crossterm_winapi v0.6.1
[INFO] [stderr]   Downloaded rusqlite v0.23.1
[INFO] [stderr]   Downloaded signal-hook v0.1.16
[INFO] [stderr]   Downloaded aho-corasick v0.7.12
[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] bf269552d3f8d33111907bb97a536a486713a2b27ec1348b504d0d0dbc7072cc
[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" "bf269552d3f8d33111907bb97a536a486713a2b27ec1348b504d0d0dbc7072cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf269552d3f8d33111907bb97a536a486713a2b27ec1348b504d0d0dbc7072cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf269552d3f8d33111907bb97a536a486713a2b27ec1348b504d0d0dbc7072cc", kill_on_drop: false }`
[INFO] [stdout] bf269552d3f8d33111907bb97a536a486713a2b27ec1348b504d0d0dbc7072cc
[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] 2f62c9b28dfcc93dca03a4a1efc3438b69656fc39578e7ce82f2a5c6d34f7751
[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" "2f62c9b28dfcc93dca03a4a1efc3438b69656fc39578e7ce82f2a5c6d34f7751", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]     Checking tabwriter v1.2.1
[INFO] [stderr]    Compiling libsqlite3-sys v0.18.0
[INFO] [stderr]     Checking aho-corasick v0.7.12
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking rusqlite v0.23.1
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking crossterm v0.17.5
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]     Checking ctrlc v3.1.4
[INFO] [stderr]    Compiling structopt-derive v0.4.8
[INFO] [stderr]     Checking structopt v0.3.15
[INFO] [stderr]  Documenting topngx v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.98s
[INFO] running `Command { std: "docker" "inspect" "2f62c9b28dfcc93dca03a4a1efc3438b69656fc39578e7ce82f2a5c6d34f7751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f62c9b28dfcc93dca03a4a1efc3438b69656fc39578e7ce82f2a5c6d34f7751", kill_on_drop: false }`
[INFO] [stdout] 2f62c9b28dfcc93dca03a4a1efc3438b69656fc39578e7ce82f2a5c6d34f7751