[INFO] fetching crate mm_video 0.1.0...
[INFO] documenting mm_video-0.1.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate mm_video 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate mm_video 0.1.0 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 mm_video 0.1.0
[INFO] finished tweaking crates.io crate mm_video 0.1.0
[INFO] tweaked toml for crates.io crate mm_video 0.1.0 written to /workspace/builds/worker-5/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] [stderr]     Blocking waiting for file lock on package cache
[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] warning: unused manifest key: target.i686-pc-windows-gnu.features
[INFO] [stderr] warning: unused manifest key: target.x86_64-pc-windows-gnu.features
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded opengl32-sys v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] e33d3ee57d4d990ba420d07c9c4e8ad5b1629ff4a963330df19e3356177de0cb
[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" "e33d3ee57d4d990ba420d07c9c4e8ad5b1629ff4a963330df19e3356177de0cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e33d3ee57d4d990ba420d07c9c4e8ad5b1629ff4a963330df19e3356177de0cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e33d3ee57d4d990ba420d07c9c4e8ad5b1629ff4a963330df19e3356177de0cb", kill_on_drop: false }`
[INFO] [stdout] e33d3ee57d4d990ba420d07c9c4e8ad5b1629ff4a963330df19e3356177de0cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] c2fdb71c556c205bde26d2829e414bc9b4fbab770318dc42daed904f725bb472
[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" "c2fdb71c556c205bde26d2829e414bc9b4fbab770318dc42daed904f725bb472", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: target.i686-pc-windows-gnu.features
[INFO] [stderr] warning: unused manifest key: target.x86_64-pc-windows-gnu.features
[INFO] [stderr]    Compiling mm_video v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]  Documenting mm_video v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected identifier, found `"kernel32-sys"`
[INFO] [stdout]   --> src/lib.rs:20:14
[INFO] [stdout]    |
[INFO] [stdout] 20 | extern crate "kernel32-sys" as kernel32;
[INFO] [stdout]    |              ^^^^^^^^^^^^^^ expected identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `mm_video`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name mm_video src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-b01e5f49cd1b74e8.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-8b25aaf2e71705fc.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-11946bb198eefaee.rmeta --extern x11=/opt/rustwide/target/debug/deps/libx11-37df8ad2ea106cd8.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "c2fdb71c556c205bde26d2829e414bc9b4fbab770318dc42daed904f725bb472", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2fdb71c556c205bde26d2829e414bc9b4fbab770318dc42daed904f725bb472", kill_on_drop: false }`
[INFO] [stdout] c2fdb71c556c205bde26d2829e414bc9b4fbab770318dc42daed904f725bb472