[INFO] cloning repository https://github.com/lynncyrin/galaxy-gen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lynncyrin/galaxy-gen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flynncyrin%2Fgalaxy-gen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flynncyrin%2Fgalaxy-gen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 090ac8929653767d1f79021d6503bbe85f0bcfd2
[INFO] documenting lynncyrin/galaxy-gen against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flynncyrin%2Fgalaxy-gen" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lynncyrin/galaxy-gen 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] started tweaking git repo https://github.com/lynncyrin/galaxy-gen
[INFO] finished tweaking git repo https://github.com/lynncyrin/galaxy-gen
[INFO] tweaked toml for git repo https://github.com/lynncyrin/galaxy-gen written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/lynncyrin/galaxy-gen already has a lockfile, it will not be regenerated
[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] warning: `default-features = [".."]` was found in [features]. Did you mean to use `default = [".."]`?
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.21
[INFO] [stderr]   Downloaded same-file v1.0.3
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.21
[INFO] [stderr]   Downloaded walkdir v2.2.5
[INFO] [stderr]   Downloaded console_error_panic_hook v0.1.5
[INFO] [stderr]   Downloaded slog-term v2.4.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.21
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.21
[INFO] [stderr]   Downloaded filetime v0.2.1
[INFO] [stderr]   Downloaded slog-async v2.3.0
[INFO] [stderr]   Downloaded globset v0.4.2
[INFO] [stderr]   Downloaded specs-derive v0.2.0
[INFO] [stderr]   Downloaded shred-derive v0.5.0
[INFO] [stderr]   Downloaded wee_alloc v0.4.2
[INFO] [stderr]   Downloaded shred v0.7.0
[INFO] [stderr]   Downloaded watchexec v1.9.2
[INFO] [stderr]   Downloaded human-panic v1.0.1
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.21
[INFO] [stderr]   Downloaded specs v0.12.2
[INFO] [stderr]   Downloaded hibitset v0.5.2
[INFO] [stderr]   Downloaded os_type v2.0.0
[INFO] [stderr]   Downloaded slog v2.3.3
[INFO] [stderr]   Downloaded cargo-watch v7.0.4
[INFO] [stderr]   Downloaded wasm-pack v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8469e8f171d6baf19194ae166c12deb35de5e940c5909915b1bf7b579efd351b
[INFO] running `Command { std: "docker" "start" "-a" "8469e8f171d6baf19194ae166c12deb35de5e940c5909915b1bf7b579efd351b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8469e8f171d6baf19194ae166c12deb35de5e940c5909915b1bf7b579efd351b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8469e8f171d6baf19194ae166c12deb35de5e940c5909915b1bf7b579efd351b", kill_on_drop: false }`
[INFO] [stdout] 8469e8f171d6baf19194ae166c12deb35de5e940c5909915b1bf7b579efd351b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 49e56c588d449d9c4c0cf601f6f51e16d0a3b5ca305d7007f12c8c47871d8ef7
[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" "49e56c588d449d9c4c0cf601f6f51e16d0a3b5ca305d7007f12c8c47871d8ef7", kill_on_drop: false }`
[INFO] [stderr] warning: `default-features = [".."]` was found in [features]. Did you mean to use `default = [".."]`?
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling serde v1.0.78
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.21
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]    Compiling wasm-bindgen v0.2.21
[INFO] [stderr]     Checking atom v0.3.5
[INFO] [stderr]     Checking mopa v0.2.2
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking tuple_utils v0.2.0
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]    Compiling log v0.4.5
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling syn v0.15.4
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]    Compiling shred-derive v0.5.0
[INFO] [stderr]    Compiling specs-derive v0.2.0
[INFO] [stderr]     Checking hibitset v0.5.2
[INFO] [stderr]     Checking shred v0.7.0
[INFO] [stderr]    Compiling derivative v1.0.0
[INFO] [stderr]     Checking shrev v1.0.1
[INFO] [stderr]     Checking specs v0.12.2
[INFO] [stderr]    Compiling serde_json v1.0.27
[INFO] [stderr]    Compiling serde_derive v1.0.78
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.21
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.21
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.21
[INFO] [stderr]  Documenting galaxy_gen_backend v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/rust/lib.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(extern_prelude, custom_attribute)]
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![register_tool]` and `#![register_attr]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/rust/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(extern_prelude, custom_attribute)]
[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] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `galaxy_gen_backend`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type cdylib --crate-name galaxy_gen_backend src/rust/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 cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-d86efb196df9c3ed.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-5d2f05fb2922aa2e.rmeta --extern specs=/opt/rustwide/target/debug/deps/libspecs-229d22f72d4b24dc.rmeta --extern specs_derive=/opt/rustwide/target/debug/deps/libspecs_derive-29d9628dcc3f621e.so --extern wasm_bindgen=/opt/rustwide/target/debug/deps/libwasm_bindgen-09f2729c71cd7c33.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "49e56c588d449d9c4c0cf601f6f51e16d0a3b5ca305d7007f12c8c47871d8ef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49e56c588d449d9c4c0cf601f6f51e16d0a3b5ca305d7007f12c8c47871d8ef7", kill_on_drop: false }`
[INFO] [stdout] 49e56c588d449d9c4c0cf601f6f51e16d0a3b5ca305d7007f12c8c47871d8ef7