[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] 5b1f8da5661d17ae0d23422f193f5750c58ce9b7
[INFO] documenting comp500/miniworld against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomp500%2Fminiworld" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/comp500/miniworld on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", 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-5/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" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "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] c8c0cfc2bee1dbc7c7cabdfa9931f212fe36fc90a14a3138e7b6db3ce3eb78aa
[INFO] running `Command { std: "docker" "start" "-a" "c8c0cfc2bee1dbc7c7cabdfa9931f212fe36fc90a14a3138e7b6db3ce3eb78aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8c0cfc2bee1dbc7c7cabdfa9931f212fe36fc90a14a3138e7b6db3ce3eb78aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8c0cfc2bee1dbc7c7cabdfa9931f212fe36fc90a14a3138e7b6db3ce3eb78aa", kill_on_drop: false }`
[INFO] [stdout] c8c0cfc2bee1dbc7c7cabdfa9931f212fe36fc90a14a3138e7b6db3ce3eb78aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8355a10412e6e62ca6c0662f0f1a3a2d69fb80f2ab41e4a1cea742cdcdd4c9a6
[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" "8355a10412e6e62ca6c0662f0f1a3a2d69fb80f2ab41e4a1cea742cdcdd4c9a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling syn v1.0.39
[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]    Compiling regex-syntax v0.6.18
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.1
[INFO] [stderr]     Checking firestorm v0.3.0
[INFO] [stderr]     Checking gibbon v0.1.3
[INFO] [stderr]     Checking bitbit v0.2.0
[INFO] [stderr]     Checking transmute v0.1.1
[INFO] [stderr]     Checking defer v0.1.0
[INFO] [stderr]     Checking fenwick v0.2.0
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]     Checking miniz_oxide v0.4.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]     Checking simple-16 v0.2.0
[INFO] [stderr]     Checking alloc-stdlib v0.2.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking arcode v0.1.2
[INFO] [stderr]     Checking phf_shared v0.8.0
[INFO] [stderr]     Checking brotli-decompressor v2.3.1
[INFO] [stderr]     Checking zigzag v0.1.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking backtrace v0.3.50
[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 jobserver v0.1.21
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]     Checking brotli v3.3.0
[INFO] [stderr]     Checking coercible_errors v0.1.4
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking random_color 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]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]    Compiling tree-buf-macros v0.10.0
[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]     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:1:1
[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-939bb92c8d96bb88.rmeta --extern arcode=/opt/rustwide/target/debug/deps/libarcode-8884aae6fa1fd8b7.rmeta --extern bitbit=/opt/rustwide/target/debug/deps/libbitbit-f10bc7fbca36733e.rmeta --extern brotli=/opt/rustwide/target/debug/deps/libbrotli-4fe2a8f876cb125f.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-c28f5fd38aa58f5e.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-d4e02dec9a7b6557.rmeta --extern nbt=/opt/rustwide/target/debug/deps/libnbt-73b706ad0c4f93b1.rmeta --extern humansize=/opt/rustwide/target/debug/deps/libhumansize-fc10cef357e73e34.rmeta --extern num_enum=/opt/rustwide/target/debug/deps/libnum_enum-eda27a8d88831b77.rmeta --extern palette=/opt/rustwide/target/debug/deps/libpalette-39d627b429d246e2.rmeta --extern png=/opt/rustwide/target/debug/deps/libpng-cfe88c040f2fab5b.rmeta --extern random_color=/opt/rustwide/target/debug/deps/librandom_color-d65dd7e9d9c7b24c.rmeta --extern tree_buf=/opt/rustwide/target/debug/deps/libtree_buf-6fe451ddd6f3efc2.rmeta --extern xz2=/opt/rustwide/target/debug/deps/libxz2-d3f1b95ad325af71.rmeta --extern zstd=/opt/rustwide/target/debug/deps/libzstd-8ed8b9b7b919585d.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "8355a10412e6e62ca6c0662f0f1a3a2d69fb80f2ab41e4a1cea742cdcdd4c9a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8355a10412e6e62ca6c0662f0f1a3a2d69fb80f2ab41e4a1cea742cdcdd4c9a6", kill_on_drop: false }`
[INFO] [stdout] 8355a10412e6e62ca6c0662f0f1a3a2d69fb80f2ab41e4a1cea742cdcdd4c9a6
