[INFO] fetching crate ffishim 0.1.2...
[INFO] documenting ffishim-0.1.2 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate ffishim 0.1.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate ffishim 0.1.2 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ffishim 0.1.2
[INFO] finished tweaking crates.io crate ffishim 0.1.2
[INFO] tweaked toml for crates.io crate ffishim 0.1.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6dd525631c1f340362b226e3d4c1c3cda3920d97ba0dc8dc7887920f42047f2
[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" "a6dd525631c1f340362b226e3d4c1c3cda3920d97ba0dc8dc7887920f42047f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6dd525631c1f340362b226e3d4c1c3cda3920d97ba0dc8dc7887920f42047f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6dd525631c1f340362b226e3d4c1c3cda3920d97ba0dc8dc7887920f42047f2", kill_on_drop: false }`
[INFO] [stdout] a6dd525631c1f340362b226e3d4c1c3cda3920d97ba0dc8dc7887920f42047f2
[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" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2192d09e257eca7d4b352470ae8631f0db3924a461abd0b2d0096a3b4fd85d5
[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" "f2192d09e257eca7d4b352470ae8631f0db3924a461abd0b2d0096a3b4fd85d5", kill_on_drop: false }`
[INFO] [stderr]     Checking darling_core v0.10.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking darling v0.10.2
[INFO] [stderr]  Documenting ffishim v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(vec_into_raw_parts)]
[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 `ffishim`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name ffishim 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 anyhow=/opt/rustwide/target/debug/deps/libanyhow-e6096c4876f2292e.rmeta --extern darling=/opt/rustwide/target/debug/deps/libdarling-751917e610491a66.rmeta --extern heck=/opt/rustwide/target/debug/deps/libheck-dca7a1fa867a47e1.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-82c6b0e33b42e760.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-c30ce74baffcb5b9.rmeta --extern paste=/opt/rustwide/target/debug/deps/libpaste-2f704f6a61524c63.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-07efcafb7ed26ba3.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-7b428de8cb7eff90.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-d0ae3d24aefdb66e.rmeta --cap-lints=warn --crate-version 0.1.2` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "f2192d09e257eca7d4b352470ae8631f0db3924a461abd0b2d0096a3b4fd85d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2192d09e257eca7d4b352470ae8631f0db3924a461abd0b2d0096a3b4fd85d5", kill_on_drop: false }`
[INFO] [stdout] f2192d09e257eca7d4b352470ae8631f0db3924a461abd0b2d0096a3b4fd85d5
