[INFO] cloning repository https://github.com/Steampunkery/roguelike
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Steampunkery/roguelike" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSteampunkery%2Froguelike", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSteampunkery%2Froguelike'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8efc18a607fe94c05ce92b7332ebfc425a34288
[INFO] documenting Steampunkery/roguelike against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSteampunkery%2Froguelike" "/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/Steampunkery/roguelike on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Steampunkery/roguelike
[INFO] finished tweaking git repo https://github.com/Steampunkery/roguelike
[INFO] tweaked toml for git repo https://github.com/Steampunkery/roguelike written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Steampunkery/roguelike already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1cfdca7873252a0b1b3bb0968c3a11354656253ee0a26dfc6c89f1ff4782407
[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" "b1cfdca7873252a0b1b3bb0968c3a11354656253ee0a26dfc6c89f1ff4782407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1cfdca7873252a0b1b3bb0968c3a11354656253ee0a26dfc6c89f1ff4782407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1cfdca7873252a0b1b3bb0968c3a11354656253ee0a26dfc6c89f1ff4782407", kill_on_drop: false }`
[INFO] [stdout] b1cfdca7873252a0b1b3bb0968c3a11354656253ee0a26dfc6c89f1ff4782407
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d66fce4fbc17ab44a1f3f7951d0037615975cb3fec722c60fc44f21c14365d7
[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" "2d66fce4fbc17ab44a1f3f7951d0037615975cb3fec722c60fc44f21c14365d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]     Checking bitflags v0.1.1
[INFO] [stderr]    Compiling hashbrown v0.6.0
[INFO] [stderr]    Compiling tcod-sys v5.0.1
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking rand_isaac v0.2.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]     Checking pathfinding v1.1.12
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling const-random-macro v0.1.6
[INFO] [stderr]     Checking const-random v0.1.6
[INFO] [stderr]     Checking ahash v0.2.13
[INFO] [stderr]     Checking tcod v0.15.0
[INFO] [stderr]  Documenting roguelike 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(box_syntax)]
[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 `roguelike`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name roguelike 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 dirs=/opt/rustwide/target/debug/deps/libdirs-635e70ac96337a28.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-09c96737f512ca06.rmeta --extern pathfinding=/opt/rustwide/target/debug/deps/libpathfinding-92cf7d142cfcf7d3.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-6f1e36bf3a9023ce.rmeta --extern rand_core=/opt/rustwide/target/debug/deps/librand_core-f37854d7302a7435.rmeta --extern rand_isaac=/opt/rustwide/target/debug/deps/librand_isaac-fcc9136a39d915db.rmeta --extern tcod=/opt/rustwide/target/debug/deps/libtcod-78be74c5aed783a5.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "2d66fce4fbc17ab44a1f3f7951d0037615975cb3fec722c60fc44f21c14365d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d66fce4fbc17ab44a1f3f7951d0037615975cb3fec722c60fc44f21c14365d7", kill_on_drop: false }`
[INFO] [stdout] 2d66fce4fbc17ab44a1f3f7951d0037615975cb3fec722c60fc44f21c14365d7