[INFO] cloning repository https://github.com/sim82/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sim82/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsim82%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsim82%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d29f5dfa671cfbfd66b22b2876741161cf8ca7f5
[INFO] documenting sim82/rust_playground against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsim82%2Frust_playground" "/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/sim82/rust_playground on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sim82/rust_playground
[INFO] finished tweaking git repo https://github.com/sim82/rust_playground
[INFO] tweaked toml for git repo https://github.com/sim82/rust_playground written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/sim82/rust_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.cgmath.simd
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4adc1f665e963420d6ecd178d4bb480d1cbb2742a74f3945d56384ebb3f38796
[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" "4adc1f665e963420d6ecd178d4bb480d1cbb2742a74f3945d56384ebb3f38796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4adc1f665e963420d6ecd178d4bb480d1cbb2742a74f3945d56384ebb3f38796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4adc1f665e963420d6ecd178d4bb480d1cbb2742a74f3945d56384ebb3f38796", kill_on_drop: false }`
[INFO] [stdout] 4adc1f665e963420d6ecd178d4bb480d1cbb2742a74f3945d56384ebb3f38796
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb4d7dcdf94d7bfe57dc42831556b3fa87a3af088c13bdec4a77d2529b106d59
[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" "fb4d7dcdf94d7bfe57dc42831556b3fa87a3af088c13bdec4a77d2529b106d59", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused manifest key: dependencies.cgmath.simd
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]     Checking downcast-rs v1.0.3
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]    Compiling serde v1.0.84
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling vulkano v0.11.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling cgmath v0.17.0
[INFO] [stderr]     Checking vk-sys v0.4.0
[INFO] [stderr]     Checking half v1.3.0
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking safe-transmute v0.10.1
[INFO] [stderr]    Compiling rust_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking uuid v0.7.2
[INFO] [stderr]     Checking custom_error v1.3.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking packed_simd v0.3.1
[INFO] [stderr]     Checking rustc-hash v1.0.1
[INFO] [stderr]     Checking stb_truetype v0.2.5
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling wayland-scanner v0.21.7
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking inflate v0.4.4
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking gif v0.10.1
[INFO] [stderr]     Checking smallvec v0.6.7
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.0
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]    Compiling cmake v0.1.35
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking num_cpus v1.9.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking x11-dl v2.18.3
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]    Compiling wayland-client v0.21.7
[INFO] [stderr]    Compiling wayland-protocols v0.21.7
[INFO] [stderr]     Checking rand v0.6.1
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking approx v0.3.1
[INFO] [stderr]     Checking ordered-float v1.0.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/packed_simd-0.3.1/src/lib.rs:202:1
[INFO] [stdout]     |
[INFO] [stdout] 202 | / #![feature(
[INFO] [stdout] 203 | |     repr_simd,
[INFO] [stdout] 204 | |     const_fn,
[INFO] [stdout] 205 | |     platform_intrinsics,
[INFO] [stdout] ...   |
[INFO] [stdout] 215 | |     custom_inner_attributes
[INFO] [stdout] 216 | | )]
[INFO] [stdout]     | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling shaderc v0.3.12
[INFO] [stderr]     Checking rusttype v0.7.5
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking twox-hash v1.1.2
[INFO] [stderr]     Checking png v0.14.0
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking andrew v0.1.4
[INFO] [stderr]     Checking glyph_brush_layout v0.1.5
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.6
[INFO] [stderr]     Checking wayland-sys v0.21.7
[INFO] [stderr]     Checking glyph_brush v0.4.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking crossbeam v0.5.0
[INFO] [stderr]     Checking wayland-commons v0.21.7
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]     Checking serde_json v1.0.35
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.4
[INFO] [stderr]     Checking image v0.21.0
[INFO] [stderr]     Checking winit v0.18.0
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `packed_simd`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fb4d7dcdf94d7bfe57dc42831556b3fa87a3af088c13bdec4a77d2529b106d59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb4d7dcdf94d7bfe57dc42831556b3fa87a3af088c13bdec4a77d2529b106d59", kill_on_drop: false }`
[INFO] [stdout] fb4d7dcdf94d7bfe57dc42831556b3fa87a3af088c13bdec4a77d2529b106d59