[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 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCoherentThought%2Ftsygote_engine" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CoherentThought/tsygote_engine on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-3/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" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c12393e68e6564a87683c06aba1582e14368ccfee15dd0dec53ebf533b287217
[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" "c12393e68e6564a87683c06aba1582e14368ccfee15dd0dec53ebf533b287217", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c12393e68e6564a87683c06aba1582e14368ccfee15dd0dec53ebf533b287217", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c12393e68e6564a87683c06aba1582e14368ccfee15dd0dec53ebf533b287217", kill_on_drop: false }`
[INFO] [stdout] c12393e68e6564a87683c06aba1582e14368ccfee15dd0dec53ebf533b287217
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b566ef74480c3aff40351d330987dc4e6a611a57a7ea1c428ab06afaa41243d
[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" "2b566ef74480c3aff40351d330987dc4e6a611a57a7ea1c428ab06afaa41243d", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling pkg-config v0.3.16
[INFO] [stderr]    Compiling ears v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking gif v0.10.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking stb_truetype v0.3.0
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]    Compiling gl_generator v0.11.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]    Compiling x11-dl v2.18.4
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.5
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.3
[INFO] [stderr]    Compiling glium v0.25.1
[INFO] [stderr]     Checking rusttype v0.8.0
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking image v0.21.3
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]     Checking wayland-client v0.21.13
[INFO] [stderr]     Checking wayland-protocols v0.21.13
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking winit v0.19.3
[INFO] [stderr]     Checking glutin v0.21.1
[INFO] [stderr]  Documenting tsygote_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable 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-91d323a69ceea84d.rmeta --extern glium=/opt/rustwide/target/debug/deps/libglium-d70d41b88f09c19c.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-6af10f79868b7896.rmeta --extern rusttype=/opt/rustwide/target/debug/deps/librusttype-918084be4d7b853d.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2b566ef74480c3aff40351d330987dc4e6a611a57a7ea1c428ab06afaa41243d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b566ef74480c3aff40351d330987dc4e6a611a57a7ea1c428ab06afaa41243d", kill_on_drop: false }`
[INFO] [stdout] 2b566ef74480c3aff40351d330987dc4e6a611a57a7ea1c428ab06afaa41243d
