[INFO] cloning repository https://github.com/knutwalker/ligrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/knutwalker/ligrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknutwalker%2Fligrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknutwalker%2Fligrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f49506b77ee9529890278a77703450e6493de10
[INFO] documenting knutwalker/ligrust against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknutwalker%2Fligrust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/knutwalker/ligrust on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/knutwalker/ligrust
[INFO] finished tweaking git repo https://github.com/knutwalker/ligrust
[INFO] tweaked toml for git repo https://github.com/knutwalker/ligrust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/knutwalker/ligrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c5eb73edad190c3d3ae154e92e45e02f561a78ec2129ff341e349e62d326eb5
[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" "7c5eb73edad190c3d3ae154e92e45e02f561a78ec2129ff341e349e62d326eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c5eb73edad190c3d3ae154e92e45e02f561a78ec2129ff341e349e62d326eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c5eb73edad190c3d3ae154e92e45e02f561a78ec2129ff341e349e62d326eb5", kill_on_drop: false }`
[INFO] [stdout] 7c5eb73edad190c3d3ae154e92e45e02f561a78ec2129ff341e349e62d326eb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 10480b2562cd5dd7cab6338653136a0842a8fd6577536f757c4fa199cb55f16f
[INFO] running `Command { std: "docker" "start" "-a" "10480b2562cd5dd7cab6338653136a0842a8fd6577536f757c4fa199cb55f16f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]     Checking indenter v0.3.2
[INFO] [stderr]     Checking pico-args v0.4.1
[INFO] [stderr]     Checking byte-slice-cast v1.0.0
[INFO] [stderr]     Checking atomic_float v0.1.0
[INFO] [stderr]     Checking linereader v0.4.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking atoi v0.4.0
[INFO] [stderr]     Checking eyre v0.6.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]  Documenting ligrust 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(array_windows, never_type, new_uninit, 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 `ligrust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ligrust src/main.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="mapped_graph"' --cfg 'feature="memmap"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=0a77a6a85e4b12f3 -L dependency=/opt/rustwide/target/debug/deps --extern atoi=/opt/rustwide/target/debug/deps/libatoi-be63621425b92c7f.rmeta --extern atomic_float=/opt/rustwide/target/debug/deps/libatomic_float-224f26aee9894151.rmeta --extern byte_slice_cast=/opt/rustwide/target/debug/deps/libbyte_slice_cast-cf96bf9a17fefa4a.rmeta --extern eyre=/opt/rustwide/target/debug/deps/libeyre-d51b9fac19cc699e.rmeta --extern linereader=/opt/rustwide/target/debug/deps/liblinereader-c372c001b299f1b6.rmeta --extern memmap=/opt/rustwide/target/debug/deps/libmemmap-2ad9cc94233485f2.rmeta --extern pico_args=/opt/rustwide/target/debug/deps/libpico_args-82b9fbf7c3b85233.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-25fc0e1266140d6f.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "10480b2562cd5dd7cab6338653136a0842a8fd6577536f757c4fa199cb55f16f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10480b2562cd5dd7cab6338653136a0842a8fd6577536f757c4fa199cb55f16f", kill_on_drop: false }`
[INFO] [stdout] 10480b2562cd5dd7cab6338653136a0842a8fd6577536f757c4fa199cb55f16f