[INFO] cloning repository https://github.com/glotitude/glotitude_hq
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/glotitude/glotitude_hq" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglotitude%2Fglotitude_hq", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglotitude%2Fglotitude_hq'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 29e5cdde3c36f51dd87d45a1f6821bc043c68a6d
[INFO] documenting glotitude/glotitude_hq 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%2Fglotitude%2Fglotitude_hq" "/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/glotitude/glotitude_hq 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/glotitude/glotitude_hq
[INFO] finished tweaking git repo https://github.com/glotitude/glotitude_hq
[INFO] tweaked toml for git repo https://github.com/glotitude/glotitude_hq written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/glotitude/glotitude_hq 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-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" "+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] 3cdb50a12ac00606fe8579369c80554dd60fb473230e55bef767d6061b48eaf4
[INFO] running `Command { std: "docker" "start" "-a" "3cdb50a12ac00606fe8579369c80554dd60fb473230e55bef767d6061b48eaf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cdb50a12ac00606fe8579369c80554dd60fb473230e55bef767d6061b48eaf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cdb50a12ac00606fe8579369c80554dd60fb473230e55bef767d6061b48eaf4", kill_on_drop: false }`
[INFO] [stdout] 3cdb50a12ac00606fe8579369c80554dd60fb473230e55bef767d6061b48eaf4
[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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 597ef36922f786a4c724ebf41def72ad4c9a2b38a7377a9a1a6dc65d05114c37
[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" "597ef36922f786a4c724ebf41def72ad4c9a2b38a7377a9a1a6dc65d05114c37", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling syn v1.0.21
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling quote v1.0.5
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]    Compiling ctchi_codegen v0.2.0
[INFO] [stderr]     Checking ctchi v0.18.0
[INFO] [stderr]  Documenting glotitude_hq 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(concat_idents)]
[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 `glotitude_hq`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name glotitude_hq 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 ctchi=/opt/rustwide/target/debug/deps/libctchi-4c7ac32bd390286e.rmeta --extern ctchi_codegen=/opt/rustwide/target/debug/deps/libctchi_codegen-581aa1aecba1ecee.so --extern regex=/opt/rustwide/target/debug/deps/libregex-0e6b966ed7773e52.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "597ef36922f786a4c724ebf41def72ad4c9a2b38a7377a9a1a6dc65d05114c37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "597ef36922f786a4c724ebf41def72ad4c9a2b38a7377a9a1a6dc65d05114c37", kill_on_drop: false }`
[INFO] [stdout] 597ef36922f786a4c724ebf41def72ad4c9a2b38a7377a9a1a6dc65d05114c37
