[INFO] cloning repository https://github.com/comp500/miniworld
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/comp500/miniworld" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomp500%2Fminiworld", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomp500%2Fminiworld'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b6beb25def764b33c0e45bf7e0df24f2c7929d7
[INFO] documenting comp500/miniworld 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%2Fcomp500%2Fminiworld" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/comp500/miniworld 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/comp500/miniworld
[INFO] finished tweaking git repo https://github.com/comp500/miniworld
[INFO] tweaked toml for git repo https://github.com/comp500/miniworld written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/comp500/miniworld 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-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] b492bc42d12e32f136d934eb988bc891bcc32b4212d41f7cb5adbb753417b61e
[INFO] running `Command { std: "docker" "start" "-a" "b492bc42d12e32f136d934eb988bc891bcc32b4212d41f7cb5adbb753417b61e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b492bc42d12e32f136d934eb988bc891bcc32b4212d41f7cb5adbb753417b61e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b492bc42d12e32f136d934eb988bc891bcc32b4212d41f7cb5adbb753417b61e", kill_on_drop: false }`
[INFO] [stdout] b492bc42d12e32f136d934eb988bc891bcc32b4212d41f7cb5adbb753417b61e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] 750eaf7397f9b2fd530d6ce8717b5fbfef67e49358893927c4a149db7c6e1d95
[INFO] running `Command { std: "docker" "start" "-a" "750eaf7397f9b2fd530d6ce8717b5fbfef67e49358893927c4a149db7c6e1d95", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling rayon-core v1.8.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking firestorm v0.3.0
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking transmute v0.1.1
[INFO] [stderr]     Checking defer v0.1.0
[INFO] [stderr]     Checking bitbit v0.2.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]     Checking gibbon v0.1.3
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]     Checking fenwick v1.0.0
[INFO] [stderr]     Checking fixed-vec-deque v0.1.9
[INFO] [stderr]     Checking hilbert_index v0.2.0
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking arrayvec v0.7.1
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]     Checking miniz_oxide v0.4.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]     Checking simple-16 v0.2.0
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking arcode v0.2.3
[INFO] [stderr]     Checking alloc-stdlib v0.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]     Checking brotli-decompressor v2.3.1
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]     Checking brotli v3.3.0
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking zigzag v0.1.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking random_color v0.4.4
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]    Compiling lzma-sys v0.1.16
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]     Checking coercible_errors v0.1.4
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]    Compiling tree-buf-macros v0.10.0
[INFO] [stderr]    Compiling enum_dispatch v0.3.7
[INFO] [stderr]     Checking enum-iterator v0.6.0
[INFO] [stderr]     Checking tree-buf v0.10.0
[INFO] [stderr]     Checking hematite-nbt v0.5.0
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling num_enum_derive v0.5.1
[INFO] [stderr]     Checking zstd-safe v2.0.5+zstd.1.4.5
[INFO] [stderr]     Checking zstd v0.5.3+zstd.1.4.5
[INFO] [stderr]     Checking num_enum v0.5.1
[INFO] [stderr]  Documenting miniworld 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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `miniworld`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name miniworld src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=afd71f8b9e42dcd1 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-c1491281f5830993.rmeta --extern arcode=/opt/rustwide/target/debug/deps/libarcode-9c6ac9426daf9d69.rmeta --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-9008e9b18d4af028.rmeta --extern bitbit=/opt/rustwide/target/debug/deps/libbitbit-92ef83498711bf65.rmeta --extern brotli=/opt/rustwide/target/debug/deps/libbrotli-1fb445b649231514.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-e40c077c9aa3c552.rmeta --extern enum_iterator=/opt/rustwide/target/debug/deps/libenum_iterator-9d95e9f77a367723.rmeta --extern enum_dispatch=/opt/rustwide/target/debug/deps/libenum_dispatch-d7006b5fa760be96.so --extern fixed_vec_deque=/opt/rustwide/target/debug/deps/libfixed_vec_deque-4a547c557c66cd5b.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-b51d7b1663ad0a1c.rmeta --extern nbt=/opt/rustwide/target/debug/deps/libnbt-af9f832a1c38f6c6.rmeta --extern hilbert_index=/opt/rustwide/target/debug/deps/libhilbert_index-a39db057a47828aa.rmeta --extern humansize=/opt/rustwide/target/debug/deps/libhumansize-0fe7aeab14c84b61.rmeta --extern num_enum=/opt/rustwide/target/debug/deps/libnum_enum-935996c55e52f066.rmeta --extern palette=/opt/rustwide/target/debug/deps/libpalette-bf02de92c499e1a6.rmeta --extern png=/opt/rustwide/target/debug/deps/libpng-654673402a667f8f.rmeta --extern random_color=/opt/rustwide/target/debug/deps/librandom_color-43d8f5032ea43e63.rmeta --extern simple_16=/opt/rustwide/target/debug/deps/libsimple_16-08fda263e27c3acb.rmeta --extern tree_buf=/opt/rustwide/target/debug/deps/libtree_buf-0047a4215ccbb75a.rmeta --extern xz2=/opt/rustwide/target/debug/deps/libxz2-0032870874dfd424.rmeta --extern zstd=/opt/rustwide/target/debug/deps/libzstd-a4c532cc8c32a240.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "750eaf7397f9b2fd530d6ce8717b5fbfef67e49358893927c4a149db7c6e1d95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "750eaf7397f9b2fd530d6ce8717b5fbfef67e49358893927c4a149db7c6e1d95", kill_on_drop: false }`
[INFO] [stdout] 750eaf7397f9b2fd530d6ce8717b5fbfef67e49358893927c4a149db7c6e1d95