[INFO] cloning repository https://github.com/Roysten/blocks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Roysten/blocks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRoysten%2Fblocks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRoysten%2Fblocks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0832c63e982f318fef543fca44353ebfe11e36fe
[INFO] documenting Roysten/blocks 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%2FRoysten%2Fblocks" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Roysten/blocks 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/Roysten/blocks
[INFO] finished tweaking git repo https://github.com/Roysten/blocks
[INFO] tweaked toml for git repo https://github.com/Roysten/blocks written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Roysten/blocks 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] c4a4b224c2d23802ee619655bf5cb8d669b0e91d197072df3c3b44d5e8b607df
[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" "c4a4b224c2d23802ee619655bf5cb8d669b0e91d197072df3c3b44d5e8b607df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4a4b224c2d23802ee619655bf5cb8d669b0e91d197072df3c3b44d5e8b607df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4a4b224c2d23802ee619655bf5cb8d669b0e91d197072df3c3b44d5e8b607df", kill_on_drop: false }`
[INFO] [stdout] c4a4b224c2d23802ee619655bf5cb8d669b0e91d197072df3c3b44d5e8b607df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 99390c98a6eef90ba7bcbd1ec40450340ed246cc5f13194d25cddcc83525b592
[INFO] running `Command { std: "docker" "start" "-a" "99390c98a6eef90ba7bcbd1ec40450340ed246cc5f13194d25cddcc83525b592", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.29
[INFO] [stderr]    Compiling dtoa v0.4.1
[INFO] [stderr]    Compiling itoa v0.3.1
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling khronos_api v1.0.1
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking fnv v1.0.5
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling x11-dl v2.14.0
[INFO] [stderr]    Compiling xml-rs v0.3.6
[INFO] [stderr]    Compiling gl_generator v0.5.5
[INFO] [stderr]    Compiling phf v0.7.21
[INFO] [stderr]     Checking deflate v0.7.16
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]     Checking fs2 v0.2.5
[INFO] [stderr]     Checking shared_library v0.1.7
[INFO] [stderr]     Checking backtrace-sys v0.1.12
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking memmap v0.4.0
[INFO] [stderr]    Compiling serde_json v0.9.10
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]    Compiling wayland-scanner v0.9.9
[INFO] [stderr]     Checking tempfile v2.1.6
[INFO] [stderr]     Checking cgmath v0.15.0
[INFO] [stderr]    Compiling glutin v0.9.2
[INFO] [stderr]    Compiling glium v0.17.0
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]     Checking png v0.9.0
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]    Compiling wayland-client v0.9.9
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.9.9
[INFO] [stderr]     Checking wayland-window v0.6.1
[INFO] [stderr]     Checking wayland-kbd v0.9.1
[INFO] [stderr]     Checking winit v0.7.5
[INFO] [stderr]  Documenting vak v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[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 `vak`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name vak src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern cgmath=/opt/rustwide/target/debug/deps/libcgmath-9bec6e41534ae0d3.rmeta --extern glium=/opt/rustwide/target/debug/deps/libglium-6b7951a24d4629b9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-e0b416b2062b490d.rmeta --extern png=/opt/rustwide/target/debug/deps/libpng-3e8d7e554819756a.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "99390c98a6eef90ba7bcbd1ec40450340ed246cc5f13194d25cddcc83525b592", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99390c98a6eef90ba7bcbd1ec40450340ed246cc5f13194d25cddcc83525b592", kill_on_drop: false }`
[INFO] [stdout] 99390c98a6eef90ba7bcbd1ec40450340ed246cc5f13194d25cddcc83525b592