[INFO] cloning repository https://github.com/isavegas/aoc_2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/isavegas/aoc_2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisavegas%2Faoc_2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisavegas%2Faoc_2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 27dd76824a1e6076eadae7789106380bf9b9ba95
[INFO] documenting isavegas/aoc_2019 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%2Fisavegas%2Faoc_2019" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/isavegas/aoc_2019 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/isavegas/aoc_2019
[INFO] finished tweaking git repo https://github.com/isavegas/aoc_2019
[INFO] tweaked toml for git repo https://github.com/isavegas/aoc_2019 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/isavegas/aoc_2019 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] be09eac2c28c7f0b60502c39ebbc06db1bb4d19f62ede9899ef085f5941671bd
[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" "be09eac2c28c7f0b60502c39ebbc06db1bb4d19f62ede9899ef085f5941671bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be09eac2c28c7f0b60502c39ebbc06db1bb4d19f62ede9899ef085f5941671bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be09eac2c28c7f0b60502c39ebbc06db1bb4d19f62ede9899ef085f5941671bd", kill_on_drop: false }`
[INFO] [stdout] be09eac2c28c7f0b60502c39ebbc06db1bb4d19f62ede9899ef085f5941671bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c61310ed0ffbd19289a417224713bc1b91a28528de14f1979299f973a0a7cc46
[INFO] running `Command { std: "docker" "start" "-a" "c61310ed0ffbd19289a417224713bc1b91a28528de14f1979299f973a0a7cc46", kill_on_drop: false }`
[INFO] [stderr]    Compiling packed_simd v0.3.3
[INFO] [stderr]    Compiling aoc_2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking permutohedron v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking num v0.3.0
[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/packed_simd-0.3.3/src/lib.rs:202:1
[INFO] [stdout]     |
[INFO] [stdout] 202 | / #![feature(
[INFO] [stdout] 203 | |     repr_simd,
[INFO] [stdout] 204 | |     const_fn,
[INFO] [stdout] 205 | |     platform_intrinsics,
[INFO] [stdout] ...   |
[INFO] [stdout] 215 | |     custom_inner_attributes
[INFO] [stdout] 216 | | )]
[INFO] [stdout]     | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling automod v0.2.2
[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 `packed_simd`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "c61310ed0ffbd19289a417224713bc1b91a28528de14f1979299f973a0a7cc46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c61310ed0ffbd19289a417224713bc1b91a28528de14f1979299f973a0a7cc46", kill_on_drop: false }`
[INFO] [stdout] c61310ed0ffbd19289a417224713bc1b91a28528de14f1979299f973a0a7cc46