[INFO] fetching crate nightfall 0.1.8...
[INFO] documenting nightfall-0.1.8 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate nightfall 0.1.8 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate nightfall 0.1.8 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 crates.io crate nightfall 0.1.8
[INFO] finished tweaking crates.io crate nightfall 0.1.8
[INFO] tweaked toml for crates.io crate nightfall 0.1.8 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2bb5c92651ca93365470e3c6b720e4378f2a882ae0cbb1cfc283bfde1d586996
[INFO] running `Command { std: "docker" "start" "-a" "2bb5c92651ca93365470e3c6b720e4378f2a882ae0cbb1cfc283bfde1d586996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bb5c92651ca93365470e3c6b720e4378f2a882ae0cbb1cfc283bfde1d586996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bb5c92651ca93365470e3c6b720e4378f2a882ae0cbb1cfc283bfde1d586996", kill_on_drop: false }`
[INFO] [stdout] 2bb5c92651ca93365470e3c6b720e4378f2a882ae0cbb1cfc283bfde1d586996
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stdout] 70859746fd28ae61a7c0247b5f9fd1d4bd9ab196f9396a6d67dd3273ec80dcd1
[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" "70859746fd28ae61a7c0247b5f9fd1d4bd9ab196f9396a6d67dd3273ec80dcd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling platforms v2.0.0
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]     Checking spin v0.7.1
[INFO] [stderr]     Checking unescape v0.1.0
[INFO] [stderr]     Checking pollster v0.2.5
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking log v0.4.17
[INFO] [stderr]     Checking catty v0.1.4
[INFO] [stderr]     Checking spinny v0.2.2
[INFO] [stderr]     Checking spin v0.9.3
[INFO] [stderr]     Checking barrage v0.2.1
[INFO] [stderr]    Compiling err-derive v0.3.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking nix v0.20.2
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]    Compiling xtra_proc v0.1.0
[INFO] [stderr]     Checking tokio v1.18.2
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.12
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking psutil v3.2.2
[INFO] [stderr]     Checking xtra v0.5.1
[INFO] [stderr]     Checking tokio-stream v0.1.8
[INFO] [stderr]     Checking serde_json v1.0.81
[INFO] [stderr]  Documenting nightfall v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(assert_matches, result_flattening, hash_drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(assert_matches, result_flattening, hash_drain_filter)]
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:47
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(assert_matches, result_flattening, hash_drain_filter)]
[INFO] [stdout]   |                                               ^^^^^^^^^^^^^^^^^
[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 `nightfall`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name nightfall src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=352e13a9d3a1a679 -L dependency=/opt/rustwide/target/debug/deps --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-1cc28e7feb38ab3a.so --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-483f5a2788925099.rmeta --extern err_derive=/opt/rustwide/target/debug/deps/liberr_derive-acc77ade84ccb85e.so --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-701e134f05ff346a.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-d4dcf4d775186672.rmeta --extern psutil=/opt/rustwide/target/debug/deps/libpsutil-be9b9189da23a279.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-264a46616c40e5de.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-5d103329857481de.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-e95d8d72457ea106.rmeta --extern slog=/opt/rustwide/target/debug/deps/libslog-3c33bc7a533a96d2.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-bef1f62c4a4f8595.rmeta --extern tokio_stream=/opt/rustwide/target/debug/deps/libtokio_stream-9271629edf380852.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-999bbabc1bb8d74a.rmeta --extern xtra=/opt/rustwide/target/debug/deps/libxtra-ce57fe13eba201b9.rmeta --extern xtra_proc=/opt/rustwide/target/debug/deps/libxtra_proc-25d1a42f8c02c6e3.so --cap-lints=warn --crate-version 0.1.8` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "70859746fd28ae61a7c0247b5f9fd1d4bd9ab196f9396a6d67dd3273ec80dcd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70859746fd28ae61a7c0247b5f9fd1d4bd9ab196f9396a6d67dd3273ec80dcd1", kill_on_drop: false }`
[INFO] [stdout] 70859746fd28ae61a7c0247b5f9fd1d4bd9ab196f9396a6d67dd3273ec80dcd1