[INFO] fetching crate remarkable 0.0.1...
[INFO] documenting remarkable-0.0.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate remarkable 0.0.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate remarkable 0.0.1 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] removed /workspace/builds/worker-1/source/.cargo/config
[INFO] started tweaking crates.io crate remarkable 0.0.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate remarkable 0.0.1
[INFO] tweaked toml for crates.io crate remarkable 0.0.1 written to /workspace/builds/worker-1/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redhook v0.1.2
[INFO] [stderr]   Downloaded epoll v3.1.1
[INFO] [stderr]   Downloaded rb v0.3.2
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 519f1446976a18cf5345dc17cd977966705de9dfb6af1496bef4a339e4f86ea0
[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" "519f1446976a18cf5345dc17cd977966705de9dfb6af1496bef4a339e4f86ea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "519f1446976a18cf5345dc17cd977966705de9dfb6af1496bef4a339e4f86ea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "519f1446976a18cf5345dc17cd977966705de9dfb6af1496bef4a339e4f86ea0", kill_on_drop: false }`
[INFO] [stdout] 519f1446976a18cf5345dc17cd977966705de9dfb6af1496bef4a339e4f86ea0
[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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94dff7255430d54a56d443bf7203ce9f76735b80e06007b704b4e740896b2677
[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" "94dff7255430d54a56d443bf7203ce9f76735b80e06007b704b4e740896b2677", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking bitflags v0.8.2
[INFO] [stderr]     Checking rb v0.3.2
[INFO] [stderr]     Checking ioctl-gen v0.1.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking inflate v0.3.4
[INFO] [stderr]     Checking aabb-quadtree v0.1.0
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking epoll v3.1.1
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking ordered-float v0.5.2
[INFO] [stderr]     Checking mmap v0.1.1
[INFO] [stderr]     Checking stb_truetype v0.2.8
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking rusttype v0.4.3
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking evdev v0.10.1
[INFO] [stderr]  Documenting remarkable v0.0.1 (/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(integer_atomics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_size_of)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `remarkable`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name remarkable 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 aabb_quadtree=/opt/rustwide/target/debug/deps/libaabb_quadtree-87796baacdd582b9.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-e2d4ce27a887f568.rmeta --extern epoll=/opt/rustwide/target/debug/deps/libepoll-911e397ad6dca9bf.rmeta --extern evdev=/opt/rustwide/target/debug/deps/libevdev-e2ef79aa982a7b12.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-1e0c3161ece90730.rmeta --extern ioctl_gen=/opt/rustwide/target/debug/deps/libioctl_gen-7b0b3ff983f53c20.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-b01e5f49cd1b74e8.rmeta --extern line_drawing=/opt/rustwide/target/debug/deps/libline_drawing-501d16ae20076a09.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-95a9d57e67df36ac.rmeta --extern mmap=/opt/rustwide/target/debug/deps/libmmap-48e10d478d873c4b.rmeta --extern rb=/opt/rustwide/target/debug/deps/librb-a4cfa48107995fed.rmeta --extern rusttype=/opt/rustwide/target/debug/deps/librusttype-54b49b5fd804cc83.rmeta --cap-lints=warn --crate-version 0.0.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "94dff7255430d54a56d443bf7203ce9f76735b80e06007b704b4e740896b2677", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94dff7255430d54a56d443bf7203ce9f76735b80e06007b704b4e740896b2677", kill_on_drop: false }`
[INFO] [stdout] 94dff7255430d54a56d443bf7203ce9f76735b80e06007b704b4e740896b2677