[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 1.61.0 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 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zstd-safe v2.0.5+zstd.1.4.5
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[INFO] [stderr]   Downloaded tree-buf-macros v0.10.0
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[INFO] [stderr]   Downloaded bitbit v0.2.0
[INFO] [stderr]   Downloaded alloc-no-stdlib v2.0.1
[INFO] [stderr]   Downloaded fixed-vec-deque v0.1.9
[INFO] [stderr]   Downloaded brotli-decompressor v2.3.1
[INFO] [stderr]   Downloaded enum-iterator v0.6.0
[INFO] [stderr]   Downloaded random_color v0.4.4
[INFO] [stderr]   Downloaded hilbert_index v0.2.0
[INFO] [stderr]   Downloaded palette_derive v0.5.0
[INFO] [stderr]   Downloaded defer v0.1.0
[INFO] [stderr]   Downloaded enum-iterator-derive v0.6.0
[INFO] [stderr]   Downloaded transmute v0.1.1
[INFO] [stderr]   Downloaded coercible_errors v0.1.4
[INFO] [stderr]   Downloaded simple-16 v0.2.0
[INFO] [stderr]   Downloaded zigzag v0.1.0
[INFO] [stderr]   Downloaded zstd v0.5.3+zstd.1.4.5
[INFO] [stderr]   Downloaded palette v0.5.0
[INFO] [stderr]   Downloaded gibbon v0.1.3
[INFO] [stderr]   Downloaded fenwick v1.0.0
[INFO] [stderr]   Downloaded arcode v0.2.3
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[INFO] [stderr]   Downloaded hematite-nbt v0.5.0
[INFO] [stderr]   Downloaded firestorm v0.3.0
[INFO] [stderr]   Downloaded zstd-sys v1.4.17+zstd.1.4.5
[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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2ff0e3d2002312002a190c266835d3bd45ab9af052e7f2229806d44ed8dd543
[INFO] running `Command { std: "docker" "start" "-a" "c2ff0e3d2002312002a190c266835d3bd45ab9af052e7f2229806d44ed8dd543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2ff0e3d2002312002a190c266835d3bd45ab9af052e7f2229806d44ed8dd543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2ff0e3d2002312002a190c266835d3bd45ab9af052e7f2229806d44ed8dd543", kill_on_drop: false }`
[INFO] [stdout] c2ff0e3d2002312002a190c266835d3bd45ab9af052e7f2229806d44ed8dd543
[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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54f157e97739692b54d781b09913aa577d58848e213eeb60919f8b3338bc6e51
[INFO] running `Command { std: "docker" "start" "-a" "54f157e97739692b54d781b09913aa577d58848e213eeb60919f8b3338bc6e51", kill_on_drop: false }`
[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 maybe-uninit v2.0.0
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling rayon-core v1.8.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]    Compiling pkg-config v0.3.18
[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]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking firestorm v0.3.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]     Checking defer v0.1.0
[INFO] [stderr]     Checking gibbon v0.1.3
[INFO] [stderr]     Checking transmute v0.1.1
[INFO] [stderr]     Checking bitbit v0.2.0
[INFO] [stderr]     Checking fenwick v1.0.0
[INFO] [stderr]     Checking arrayvec v0.7.1
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking hilbert_index v0.2.0
[INFO] [stderr]     Checking fixed-vec-deque v0.1.9
[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]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking simple-16 v0.2.0
[INFO] [stderr]     Checking arcode v0.2.3
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking alloc-stdlib v0.2.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
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[INFO] [stderr]     Checking brotli-decompressor v2.3.1
[INFO] [stderr]     Checking phf v0.8.0
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[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]    Compiling quote v1.0.7
[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]     Checking png v0.16.7
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]     Checking brotli v3.3.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking zigzag v0.1.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]     Checking random_color v0.4.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]    Compiling zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]    Compiling lzma-sys v0.1.16
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking coercible_errors v0.1.4
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]    Compiling derivative v2.1.1
[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 num_enum 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]  Documenting miniworld v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable 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 -C metadata=6c1716d1f72715d5 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-cac8b837a4a146f1.rmeta --extern arcode=/opt/rustwide/target/debug/deps/libarcode-e9538fb606fc8433.rmeta --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-7a0cd4b4f55cdcc6.rmeta --extern bitbit=/opt/rustwide/target/debug/deps/libbitbit-3c896a2ea356b4ac.rmeta --extern brotli=/opt/rustwide/target/debug/deps/libbrotli-1d7de1688f317a39.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-1b5bd1b820a35456.rmeta --extern enum_iterator=/opt/rustwide/target/debug/deps/libenum_iterator-fd481e874ce3061a.rmeta --extern enum_dispatch=/opt/rustwide/target/debug/deps/libenum_dispatch-6aa682b466f849ec.so --extern fixed_vec_deque=/opt/rustwide/target/debug/deps/libfixed_vec_deque-1549fb906846cbd2.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-5107cfacb8a57485.rmeta --extern nbt=/opt/rustwide/target/debug/deps/libnbt-ea39758589d43ba3.rmeta --extern hilbert_index=/opt/rustwide/target/debug/deps/libhilbert_index-132ad620486fe589.rmeta --extern humansize=/opt/rustwide/target/debug/deps/libhumansize-c0f89fdfeb24b8a4.rmeta --extern num_enum=/opt/rustwide/target/debug/deps/libnum_enum-c819ba6ccbdc2409.rmeta --extern palette=/opt/rustwide/target/debug/deps/libpalette-93c6a5080110feab.rmeta --extern png=/opt/rustwide/target/debug/deps/libpng-f0bb2e9c5708e966.rmeta --extern random_color=/opt/rustwide/target/debug/deps/librandom_color-3c61b4c1265cb7d1.rmeta --extern simple_16=/opt/rustwide/target/debug/deps/libsimple_16-28abed671cd5c61f.rmeta --extern tree_buf=/opt/rustwide/target/debug/deps/libtree_buf-a40e23cd189ba832.rmeta --extern xz2=/opt/rustwide/target/debug/deps/libxz2-270b3fcef9b6cb85.rmeta --extern zstd=/opt/rustwide/target/debug/deps/libzstd-98c606fddc051cb5.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "54f157e97739692b54d781b09913aa577d58848e213eeb60919f8b3338bc6e51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54f157e97739692b54d781b09913aa577d58848e213eeb60919f8b3338bc6e51", kill_on_drop: false }`
[INFO] [stdout] 54f157e97739692b54d781b09913aa577d58848e213eeb60919f8b3338bc6e51