[INFO] cloning repository https://github.com/tw666/riscv-simulator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tw666/riscv-simulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftw666%2Friscv-simulator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftw666%2Friscv-simulator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff8656d70c6fa27065803f32295e0d9d431004c3
[INFO] documenting tw666/riscv-simulator against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftw666%2Friscv-simulator" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tw666/riscv-simulator on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tw666/riscv-simulator
[INFO] finished tweaking git repo https://github.com/tw666/riscv-simulator
[INFO] tweaked toml for git repo https://github.com/tw666/riscv-simulator written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/tw666/riscv-simulator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bit_field v0.10.1
[INFO] [stderr]   Downloaded linkme-impl v0.2.5
[INFO] [stderr]   Downloaded linkme v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ec9125b03643d12e6102e3b879d952c47767be3e5072edef90e3f9aee3d8cb8
[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" "8ec9125b03643d12e6102e3b879d952c47767be3e5072edef90e3f9aee3d8cb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ec9125b03643d12e6102e3b879d952c47767be3e5072edef90e3f9aee3d8cb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ec9125b03643d12e6102e3b879d952c47767be3e5072edef90e3f9aee3d8cb8", kill_on_drop: false }`
[INFO] [stdout] 8ec9125b03643d12e6102e3b879d952c47767be3e5072edef90e3f9aee3d8cb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d746319e181064ee4159bef157d06202e55eb9e88d0a79b8974c653553139bb6
[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" "d746319e181064ee4159bef157d06202e55eb9e88d0a79b8974c653553139bb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling linkme-impl v0.2.5
[INFO] [stderr]    Compiling linkme v0.2.5
[INFO] [stderr]    Compiling macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stderr]    Compiling proc_macros v0.1.0 (/opt/rustwide/workdir/proc_macros)
[INFO] [stderr]  Documenting riscv-emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_generics, const_evaluatable_checked)]
[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 `riscv-emulator`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name riscv_emulator 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 bit_field=/opt/rustwide/target/debug/deps/libbit_field-fa7ecf591fdb3d11.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-5e37eee3e84fafab.rmeta --extern linkme=/opt/rustwide/target/debug/deps/liblinkme-889518a76054075d.rmeta --extern lru=/opt/rustwide/target/debug/deps/liblru-685612e5b63e47c1.rmeta --extern macros=/opt/rustwide/target/debug/deps/libmacros-b3301fe84227022b.rmeta --extern proc_macros=/opt/rustwide/target/debug/deps/libproc_macros-e69334168fd3e9bc.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d746319e181064ee4159bef157d06202e55eb9e88d0a79b8974c653553139bb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d746319e181064ee4159bef157d06202e55eb9e88d0a79b8974c653553139bb6", kill_on_drop: false }`
[INFO] [stdout] d746319e181064ee4159bef157d06202e55eb9e88d0a79b8974c653553139bb6
