[INFO] cloning repository https://github.com/CoherentThought/tsygote_engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CoherentThought/tsygote_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCoherentThought%2Ftsygote_engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCoherentThought%2Ftsygote_engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c8a08b190973696f0c49fb802b8c20dc5679529
[INFO] documenting CoherentThought/tsygote_engine against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCoherentThought%2Ftsygote_engine" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CoherentThought/tsygote_engine 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 git repo https://github.com/CoherentThought/tsygote_engine
[INFO] finished tweaking git repo https://github.com/CoherentThought/tsygote_engine
[INFO] tweaked toml for git repo https://github.com/CoherentThought/tsygote_engine written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/CoherentThought/tsygote_engine 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]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ears v0.7.0
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8c9615bae01e4ac27a549b0a00c4fee930aacb6444316ef3915cf60d93310e2a
[INFO] running `Command { std: "docker" "start" "-a" "8c9615bae01e4ac27a549b0a00c4fee930aacb6444316ef3915cf60d93310e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c9615bae01e4ac27a549b0a00c4fee930aacb6444316ef3915cf60d93310e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c9615bae01e4ac27a549b0a00c4fee930aacb6444316ef3915cf60d93310e2a", kill_on_drop: false }`
[INFO] [stdout] 8c9615bae01e4ac27a549b0a00c4fee930aacb6444316ef3915cf60d93310e2a
[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] 35570595029e004a13b038793074648204c24762aa21c0c348beb9574692bfd8
[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" "35570595029e004a13b038793074648204c24762aa21c0c348beb9574692bfd8", kill_on_drop: false }`
[INFO] [stderr]    Compiling ears v0.7.0
[INFO] [stderr]     Checking takeable-option v0.4.0
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling gl_generator v0.11.0
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]    Compiling glium v0.25.1
[INFO] [stderr]     Checking winit v0.19.5
[INFO] [stderr]     Checking glutin v0.21.2
[INFO] [stderr]  Documenting tsygote_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(nll, vec_remove_item, clamp, associated_type_bounds, specialization)] //type_ascription
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `tsygote_engine`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name tsygote_engine 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 ears=/opt/rustwide/target/debug/deps/libears-53a92bb27d7a6b26.rmeta --extern glium=/opt/rustwide/target/debug/deps/libglium-b48a0ae45fcc0688.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-682a562693e82be9.rmeta --extern rusttype=/opt/rustwide/target/debug/deps/librusttype-0c8dec6c1fb06ab3.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "35570595029e004a13b038793074648204c24762aa21c0c348beb9574692bfd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35570595029e004a13b038793074648204c24762aa21c0c348beb9574692bfd8", kill_on_drop: false }`
[INFO] [stdout] 35570595029e004a13b038793074648204c24762aa21c0c348beb9574692bfd8