[INFO] cloning repository https://github.com/oparaskos/cuddly-spoon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oparaskos/cuddly-spoon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foparaskos%2Fcuddly-spoon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foparaskos%2Fcuddly-spoon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a0331e0afad72f9ec9cf322c2ab7c7654c835ad2
[INFO] documenting oparaskos/cuddly-spoon 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%2Foparaskos%2Fcuddly-spoon" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oparaskos/cuddly-spoon 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/oparaskos/cuddly-spoon
[INFO] finished tweaking git repo https://github.com/oparaskos/cuddly-spoon
[INFO] tweaked toml for git repo https://github.com/oparaskos/cuddly-spoon written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/oparaskos/cuddly-spoon 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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ffbd9d43b98b52afb58f99daef1405a27334d1f18bace549bd9557dc1039bbc3
[INFO] running `Command { std: "docker" "start" "-a" "ffbd9d43b98b52afb58f99daef1405a27334d1f18bace549bd9557dc1039bbc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffbd9d43b98b52afb58f99daef1405a27334d1f18bace549bd9557dc1039bbc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffbd9d43b98b52afb58f99daef1405a27334d1f18bace549bd9557dc1039bbc3", kill_on_drop: false }`
[INFO] [stdout] ffbd9d43b98b52afb58f99daef1405a27334d1f18bace549bd9557dc1039bbc3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 478041f08e71919d715b0c17f8f53b44286da0b0947649908eb7bdccba35d01a
[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" "478041f08e71919d715b0c17f8f53b44286da0b0947649908eb7bdccba35d01a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling khronos_api v2.2.0
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling bitflags v0.3.3
[INFO] [stderr]    Compiling khronos_api v1.0.1
[INFO] [stderr]     Checking nom v1.2.4
[INFO] [stderr]     Checking luminance-windowing v0.1.1
[INFO] [stderr]     Checking luminance v0.16.0
[INFO] [stderr]    Compiling log v0.4.2
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling xml-rs v0.2.2
[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/luminance-0.16.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking log v0.3.9
[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 `luminance`.
[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" "478041f08e71919d715b0c17f8f53b44286da0b0947649908eb7bdccba35d01a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "478041f08e71919d715b0c17f8f53b44286da0b0947649908eb7bdccba35d01a", kill_on_drop: false }`
[INFO] [stdout] 478041f08e71919d715b0c17f8f53b44286da0b0947649908eb7bdccba35d01a