[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] 1590fc752e8cbbcaabcab44c6b450af437e5371a
[INFO] documenting comp500/miniworld 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%2Fcomp500%2Fminiworld" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/comp500/miniworld 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/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-4/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-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xz2 v0.1.6
[INFO] [stderr]   Downloaded tree-buf v0.10.0
[INFO] [stderr]   Downloaded alloc-no-stdlib v2.0.1
[INFO] [stderr]   Downloaded coercible_errors v0.1.4
[INFO] [stderr]   Downloaded transmute v0.1.1
[INFO] [stderr]   Downloaded tree-buf-macros v0.10.0
[INFO] [stderr]   Downloaded bitbit v0.2.0
[INFO] [stderr]   Downloaded brotli v3.3.0
[INFO] [stderr]   Downloaded fixed-vec-deque v0.1.9
[INFO] [stderr]   Downloaded gibbon v0.1.3
[INFO] [stderr]   Downloaded lzma-sys v0.1.16
[INFO] [stderr]   Downloaded enum_dispatch v0.3.7
[INFO] [stderr]   Downloaded hematite-nbt v0.5.0
[INFO] [stderr]   Downloaded zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]   Downloaded simple-16 v0.2.0
[INFO] [stderr]   Downloaded zstd-safe v2.0.5+zstd.1.4.5
[INFO] [stderr]   Downloaded brotli-decompressor v2.3.1
[INFO] [stderr]   Downloaded defer v0.1.0
[INFO] [stderr]   Downloaded zigzag v0.1.0
[INFO] [stderr]   Downloaded zstd v0.5.3+zstd.1.4.5
[INFO] [stderr]   Downloaded enum-iterator-derive v0.6.0
[INFO] [stderr]   Downloaded enum-iterator v0.6.0
[INFO] [stderr]   Downloaded firestorm v0.3.0
[INFO] [stderr]   Downloaded hilbert_index v0.2.0
[INFO] [stderr]   Downloaded fenwick v1.0.0
[INFO] [stderr]   Downloaded arcode v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] e1cd25a3d38b6ef8e716ee5b0ce4a8eca9148a17a95bf895a8c348cb02846b87
[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" "e1cd25a3d38b6ef8e716ee5b0ce4a8eca9148a17a95bf895a8c348cb02846b87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1cd25a3d38b6ef8e716ee5b0ce4a8eca9148a17a95bf895a8c348cb02846b87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1cd25a3d38b6ef8e716ee5b0ce4a8eca9148a17a95bf895a8c348cb02846b87", kill_on_drop: false }`
[INFO] [stdout] e1cd25a3d38b6ef8e716ee5b0ce4a8eca9148a17a95bf895a8c348cb02846b87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] b88833af538090866259698dd7fe5866cefe781f9b9c452c89be220d0a820db6
[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" "b88833af538090866259698dd7fe5866cefe781f9b9c452c89be220d0a820db6", kill_on_drop: false }`
[INFO] [stderr]     Checking firestorm v0.3.0
[INFO] [stderr]     Checking fenwick v1.0.0
[INFO] [stderr]     Checking gibbon v0.1.3
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]     Checking transmute v0.1.1
[INFO] [stderr]     Checking hilbert_index v0.2.0
[INFO] [stderr]     Checking fixed-vec-deque v0.1.9
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking error-chain v0.12.4
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking zigzag v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]    Compiling enum_dispatch v0.3.7
[INFO] [stderr]     Checking rayon-core v1.8.0
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling tree-buf-macros v0.10.0
[INFO] [stderr]     Checking arcode v0.2.3
[INFO] [stderr]     Checking simple-16 v0.2.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking coercible_errors v0.1.4
[INFO] [stderr]     Checking random_color v0.4.4
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]     Checking rayon v1.4.0
[INFO] [stderr]     Checking enum-iterator v0.6.0
[INFO] [stderr]     Checking tree-buf v0.10.0
[INFO] [stderr]    Compiling serde v1.0.115
[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]  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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[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 `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 --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-ef928f5d6a425caf.rmeta --extern arcode=/opt/rustwide/target/debug/deps/libarcode-187ce47553e1b783.rmeta --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-a753dff2c8e70d2d.rmeta --extern bitbit=/opt/rustwide/target/debug/deps/libbitbit-c365eb4624ffecb7.rmeta --extern brotli=/opt/rustwide/target/debug/deps/libbrotli-a4233f17520892b2.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-c605bb9f4f40a95b.rmeta --extern enum_iterator=/opt/rustwide/target/debug/deps/libenum_iterator-8a32815ca3e2f412.rmeta --extern enum_dispatch=/opt/rustwide/target/debug/deps/libenum_dispatch-c91bacb9daf2bb81.so --extern fixed_vec_deque=/opt/rustwide/target/debug/deps/libfixed_vec_deque-78fd6bf6791e9f6a.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-6ae1e34ec3afb51e.rmeta --extern nbt=/opt/rustwide/target/debug/deps/libnbt-0c1473d5a4c57ae2.rmeta --extern hilbert_index=/opt/rustwide/target/debug/deps/libhilbert_index-1c4fe86d0f87b44f.rmeta --extern humansize=/opt/rustwide/target/debug/deps/libhumansize-f8a4c36c17d5e0d1.rmeta --extern num_enum=/opt/rustwide/target/debug/deps/libnum_enum-6f649688efd6b13a.rmeta --extern palette=/opt/rustwide/target/debug/deps/libpalette-f5b04499c5f31f44.rmeta --extern png=/opt/rustwide/target/debug/deps/libpng-d8d8e56644f01c50.rmeta --extern random_color=/opt/rustwide/target/debug/deps/librandom_color-a87995949183491f.rmeta --extern simple_16=/opt/rustwide/target/debug/deps/libsimple_16-ea87c3c0bfe33241.rmeta --extern tree_buf=/opt/rustwide/target/debug/deps/libtree_buf-6e60494261f1f53c.rmeta --extern xz2=/opt/rustwide/target/debug/deps/libxz2-b065af6e89870863.rmeta --extern zstd=/opt/rustwide/target/debug/deps/libzstd-d6bef28d58d6d0d9.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b88833af538090866259698dd7fe5866cefe781f9b9c452c89be220d0a820db6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b88833af538090866259698dd7fe5866cefe781f9b9c452c89be220d0a820db6", kill_on_drop: false }`
[INFO] [stdout] b88833af538090866259698dd7fe5866cefe781f9b9c452c89be220d0a820db6
