[INFO] cloning repository https://github.com/zaabjuda/grafaman
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zaabjuda/grafaman" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaabjuda%2Fgrafaman", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaabjuda%2Fgrafaman'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cbeac74f102b0b165931c8eb8aacbf5ecba99563
[INFO] documenting zaabjuda/grafaman 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%2Fzaabjuda%2Fgrafaman" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zaabjuda/grafaman 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/zaabjuda/grafaman
[INFO] finished tweaking git repo https://github.com/zaabjuda/grafaman
[INFO] tweaked toml for git repo https://github.com/zaabjuda/grafaman written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/zaabjuda/grafaman 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 33463811fc9a070b85a409bbe28db20b4411d6680f29e191f9b880dc882241ec
[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" "33463811fc9a070b85a409bbe28db20b4411d6680f29e191f9b880dc882241ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33463811fc9a070b85a409bbe28db20b4411d6680f29e191f9b880dc882241ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33463811fc9a070b85a409bbe28db20b4411d6680f29e191f9b880dc882241ec", kill_on_drop: false }`
[INFO] [stdout] 33463811fc9a070b85a409bbe28db20b4411d6680f29e191f9b880dc882241ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 5b60e5d7ddabe654eebb46f29f82260b417cef9141ba8d562df105bca7c7d1bc
[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" "5b60e5d7ddabe654eebb46f29f82260b417cef9141ba8d562df105bca7c7d1bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.42
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling siphasher v0.2.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.3
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling quote v0.3.12
[INFO] [stderr]    Compiling traitobject v0.0.1
[INFO] [stderr]     Checking buf_redux v0.1.3
[INFO] [stderr]     Checking serde v0.9.5
[INFO] [stderr]     Checking itoa v0.3.0
[INFO] [stderr]     Checking dtoa v0.4.0
[INFO] [stderr]    Compiling openssl-sys v0.7.17
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]    Compiling unicode-bidi v0.2.4
[INFO] [stderr]    Compiling rocket_codegen v0.1.6
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking uuid v0.2.3
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]    Compiling hpack v0.2.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rocket_codegen-0.1.6/build.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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: could not compile `rocket_codegen`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5b60e5d7ddabe654eebb46f29f82260b417cef9141ba8d562df105bca7c7d1bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b60e5d7ddabe654eebb46f29f82260b417cef9141ba8d562df105bca7c7d1bc", kill_on_drop: false }`
[INFO] [stdout] 5b60e5d7ddabe654eebb46f29f82260b417cef9141ba8d562df105bca7c7d1bc