[INFO] cloning repository https://github.com/takatori/x86emulator-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/takatori/x86emulator-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakatori%2Fx86emulator-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakatori%2Fx86emulator-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0fc0f2754902fad2c3207ab02a3c9f6468950c8c
[INFO] documenting takatori/x86emulator-rs 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%2Ftakatori%2Fx86emulator-rs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/takatori/x86emulator-rs 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/takatori/x86emulator-rs
[INFO] finished tweaking git repo https://github.com/takatori/x86emulator-rs
[INFO] tweaked toml for git repo https://github.com/takatori/x86emulator-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/takatori/x86emulator-rs 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 35a037e9c539455448c918f9b26ae57ba88f3b2592cbf405fb8dfd388195aa5b
[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" "35a037e9c539455448c918f9b26ae57ba88f3b2592cbf405fb8dfd388195aa5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35a037e9c539455448c918f9b26ae57ba88f3b2592cbf405fb8dfd388195aa5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35a037e9c539455448c918f9b26ae57ba88f3b2592cbf405fb8dfd388195aa5b", kill_on_drop: false }`
[INFO] [stdout] 35a037e9c539455448c918f9b26ae57ba88f3b2592cbf405fb8dfd388195aa5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 408c3837ff58e76b004a450f417c6b40dd9d56f61d17f82764e912ff60ddfe48
[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" "408c3837ff58e76b004a450f417c6b40dd9d56f61d17f82764e912ff60ddfe48", kill_on_drop: false }`
[INFO] [stderr]  Documenting x86emulator-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `,`, `.`, `?`, `}`, or an operator, found `;`
[INFO] [stdout]    --> src/instruction.rs:193:32
[INFO] [stdout]     |
[INFO] [stdout] 193 |         0x10 => bios_video(emu); // todo
[INFO] [stdout]     |              --                ^ expected one of `,`, `.`, `?`, `}`, or an operator
[INFO] [stdout]     |              |
[INFO] [stdout]     |              while parsing the `match` arm starting here
[INFO] [stdout] 
[INFO] [stdout] 
[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(associated_consts)]
[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 `x86emulator-rs`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name x86emulator_rs 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 --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "408c3837ff58e76b004a450f417c6b40dd9d56f61d17f82764e912ff60ddfe48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408c3837ff58e76b004a450f417c6b40dd9d56f61d17f82764e912ff60ddfe48", kill_on_drop: false }`
[INFO] [stdout] 408c3837ff58e76b004a450f417c6b40dd9d56f61d17f82764e912ff60ddfe48