[INFO] cloning repository https://github.com/mipli/wily-the-wizard
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mipli/wily-the-wizard" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmipli%2Fwily-the-wizard", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmipli%2Fwily-the-wizard'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c0616c3b477510e8401288b816826f40e366265
[INFO] documenting mipli/wily-the-wizard against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmipli%2Fwily-the-wizard" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mipli/wily-the-wizard on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mipli/wily-the-wizard
[INFO] finished tweaking git repo https://github.com/mipli/wily-the-wizard
[INFO] tweaked toml for git repo https://github.com/mipli/wily-the-wizard written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/mipli/wily-the-wizard already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.54.0" "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] 71f926f176ce2caa55b114c137e7d0ca2bef4a88487b67f6446d9b6843b99187
[INFO] running `Command { std: "docker" "start" "-a" "71f926f176ce2caa55b114c137e7d0ca2bef4a88487b67f6446d9b6843b99187", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71f926f176ce2caa55b114c137e7d0ca2bef4a88487b67f6446d9b6843b99187", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71f926f176ce2caa55b114c137e7d0ca2bef4a88487b67f6446d9b6843b99187", kill_on_drop: false }`
[INFO] [stdout] 71f926f176ce2caa55b114c137e7d0ca2bef4a88487b67f6446d9b6843b99187
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 51ac28ed7b83f47fe4fbe95873cabcae4da050aebe078eced400d51bd7ca71b3
[INFO] running `Command { std: "docker" "start" "-a" "51ac28ed7b83f47fe4fbe95873cabcae4da050aebe078eced400d51bd7ca71b3", kill_on_drop: false }`
[INFO] [stderr]     Checking serde v1.0.43
[INFO] [stderr]     Checking bitflags v0.1.1
[INFO] [stderr]    Compiling tcod-sys v5.0.0 (https://github.com/Gustorn/tcod-rs.git?branch=tcod-16-upstream-rebase#a7d69d16)
[INFO] [stderr]     Checking regex-syntax v0.5.5
[INFO] [stderr]     Checking simple-stopwatch v0.1.4
[INFO] [stderr]    Compiling syn v0.13.4
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]     Checking regex v0.2.10
[INFO] [stderr]    Compiling serde_derive v1.0.43
[INFO] [stderr]     Checking Inflector v0.11.2
[INFO] [stderr]     Checking serde_json v1.0.16
[INFO] [stderr]     Checking geo v0.1.0 (/opt/rustwide/workdir/geo)
[INFO] [stderr]     Checking spawning_pool v0.1.0 (https://github.com/mipli/spawning-pool.git#df795ff2)
[INFO] [stderr]  Documenting geo v0.1.0 (/opt/rustwide/workdir/geo)
[INFO] [stderr]     Checking map_generator v0.1.0 (/opt/rustwide/workdir/map_generator)
[INFO] [stderr]  Documenting map_generator v0.1.0 (/opt/rustwide/workdir/map_generator)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> map_generator/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> map_generator/src/lib.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 `map_generator`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name map_generator map_generator/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern geo=/opt/rustwide/target/debug/deps/libgeo-d9890de72df8bda8.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-676373acc79f9549.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-66ce2d0c99d5c307.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-a88b77b3d7006f94.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-691057e48b080148.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "51ac28ed7b83f47fe4fbe95873cabcae4da050aebe078eced400d51bd7ca71b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51ac28ed7b83f47fe4fbe95873cabcae4da050aebe078eced400d51bd7ca71b3", kill_on_drop: false }`
[INFO] [stdout] 51ac28ed7b83f47fe4fbe95873cabcae4da050aebe078eced400d51bd7ca71b3
