[INFO] fetching crate ffmpeg4 0.4.0...
[INFO] documenting ffmpeg4-0.4.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate ffmpeg4 0.4.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ffmpeg4 0.4.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ffmpeg4 0.4.0
[INFO] finished tweaking crates.io crate ffmpeg4 0.4.0
[INFO] tweaked toml for crates.io crate ffmpeg4 0.4.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate ffmpeg4 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--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 png v0.15.0
[INFO] [stderr]   Downloaded ffmpeg4-sys v4.2.1+1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00c091e36dadf416a7b1679272a3b8927f4b697583d4667bd23145c121b5f860
[INFO] running `Command { std: "docker" "start" "-a" "00c091e36dadf416a7b1679272a3b8927f4b697583d4667bd23145c121b5f860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00c091e36dadf416a7b1679272a3b8927f4b697583d4667bd23145c121b5f860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00c091e36dadf416a7b1679272a3b8927f4b697583d4667bd23145c121b5f860", kill_on_drop: false }`
[INFO] [stdout] 00c091e36dadf416a7b1679272a3b8927f4b697583d4667bd23145c121b5f860
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d8eb4dffbacceda3154d9e49183a5c22897bd5333ff98343ad9172d9582d7bf
[INFO] running `Command { std: "docker" "start" "-a" "1d8eb4dffbacceda3154d9e49183a5c22897bd5333ff98343ad9172d9582d7bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling bindgen v0.51.1
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling ffmpeg4 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling rustc-hash v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling which v3.1.0
[INFO] [stderr]    Compiling num_cpus v1.11.0
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling ffmpeg4-sys v4.2.1+1
[INFO] [stderr]  Documenting ffmpeg4 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.26s
[INFO] running `Command { std: "docker" "inspect" "1d8eb4dffbacceda3154d9e49183a5c22897bd5333ff98343ad9172d9582d7bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d8eb4dffbacceda3154d9e49183a5c22897bd5333ff98343ad9172d9582d7bf", kill_on_drop: false }`
[INFO] [stdout] 1d8eb4dffbacceda3154d9e49183a5c22897bd5333ff98343ad9172d9582d7bf