[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 beta-2020-10-09 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-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/comp500/miniworld on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "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-8/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-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded alloc-stdlib v0.2.1
[INFO] [stderr]   Downloaded zigzag v0.1.0
[INFO] [stderr]   Downloaded bitbit v0.2.0
[INFO] [stderr]   Downloaded coercible_errors v0.1.4
[INFO] [stderr]   Downloaded tree-buf v0.10.0
[INFO] [stderr]   Downloaded tree-buf-macros v0.10.0
[INFO] [stderr]   Downloaded simple-16 v0.2.0
[INFO] [stderr]   Downloaded brotli-decompressor v2.3.1
[INFO] [stderr]   Downloaded lzma-sys v0.1.16
[INFO] [stderr]   Downloaded palette_derive v0.5.0
[INFO] [stderr]   Downloaded brotli v3.3.0
[INFO] [stderr]   Downloaded arcode v0.1.2
[INFO] [stderr]   Downloaded palette v0.5.0
[INFO] [stderr]   Downloaded firestorm v0.3.0
[INFO] [stderr]   Downloaded gibbon v0.1.3
[INFO] [stderr]   Downloaded alloc-no-stdlib v2.0.1
[INFO] [stderr]   Downloaded defer v0.1.0
[INFO] [stderr]   Downloaded hematite-nbt v0.5.0
[INFO] [stderr]   Downloaded transmute v0.1.1
[INFO] [stderr]   Downloaded fenwick v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-10-09" "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] 57b9dfc9f15282ce3fc8fe8d4b15e3a5438dc39581ddd6d19077389018c6df84
[INFO] running `Command { std: "docker" "start" "-a" "57b9dfc9f15282ce3fc8fe8d4b15e3a5438dc39581ddd6d19077389018c6df84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57b9dfc9f15282ce3fc8fe8d4b15e3a5438dc39581ddd6d19077389018c6df84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57b9dfc9f15282ce3fc8fe8d4b15e3a5438dc39581ddd6d19077389018c6df84", kill_on_drop: false }`
[INFO] [stdout] 57b9dfc9f15282ce3fc8fe8d4b15e3a5438dc39581ddd6d19077389018c6df84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36c0895abe601310895bfaaa664e719bfb3fc5f927a98e4b39be276089c6debb
[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" "36c0895abe601310895bfaaa664e719bfb3fc5f927a98e4b39be276089c6debb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.1
[INFO] [stderr]     Checking firestorm v0.3.0
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]     Checking defer v0.1.0
[INFO] [stderr]     Checking bitbit v0.2.0
[INFO] [stderr]     Checking transmute v0.1.1
[INFO] [stderr]     Checking fenwick v0.2.0
[INFO] [stderr]     Checking gibbon v0.1.3
[INFO] [stderr]     Checking miniz_oxide v0.4.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking simple-16 v0.2.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking alloc-stdlib v0.2.1
[INFO] [stderr]     Checking arcode v0.1.2
[INFO] [stderr]     Checking zigzag v0.1.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]     Checking brotli-decompressor v2.3.1
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking random_color v0.4.4
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking coercible_errors v0.1.4
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking brotli v3.3.0
[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]    Compiling palette v0.5.0
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling tree-buf-macros v0.10.0
[INFO] [stderr]    Compiling palette_derive v0.5.0
[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 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-23dff0c64805ed62.rmeta --extern arcode=/opt/rustwide/target/debug/deps/libarcode-23873b39177568a3.rmeta --extern bitbit=/opt/rustwide/target/debug/deps/libbitbit-2591a17111626ceb.rmeta --extern brotli=/opt/rustwide/target/debug/deps/libbrotli-1057852c1aead10d.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-364c148656283980.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-8702d03d4727069a.rmeta --extern nbt=/opt/rustwide/target/debug/deps/libnbt-89e16d25103bb40c.rmeta --extern humansize=/opt/rustwide/target/debug/deps/libhumansize-d8e4a1b7886de041.rmeta --extern num_enum=/opt/rustwide/target/debug/deps/libnum_enum-d23393ab9314494b.rmeta --extern palette=/opt/rustwide/target/debug/deps/libpalette-b6e4221b5869378b.rmeta --extern png=/opt/rustwide/target/debug/deps/libpng-073e9e3d2a506f44.rmeta --extern random_color=/opt/rustwide/target/debug/deps/librandom_color-507760773baaf844.rmeta --extern tree_buf=/opt/rustwide/target/debug/deps/libtree_buf-d1714bb92c40111a.rmeta --extern xz2=/opt/rustwide/target/debug/deps/libxz2-8706a656e75d92d3.rmeta --extern zstd=/opt/rustwide/target/debug/deps/libzstd-cb73758cb1d45a9d.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "36c0895abe601310895bfaaa664e719bfb3fc5f927a98e4b39be276089c6debb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36c0895abe601310895bfaaa664e719bfb3fc5f927a98e4b39be276089c6debb", kill_on_drop: false }`
[INFO] [stdout] 36c0895abe601310895bfaaa664e719bfb3fc5f927a98e4b39be276089c6debb
