[INFO] cloning repository https://github.com/paulkernfeld/bfgs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paulkernfeld/bfgs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulkernfeld%2Fbfgs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulkernfeld%2Fbfgs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1245df306706d52cafe5449de1ea0c91cfdbe34d
[INFO] documenting paulkernfeld/bfgs against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulkernfeld%2Fbfgs" "/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/paulkernfeld/bfgs on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paulkernfeld/bfgs
[INFO] finished tweaking git repo https://github.com/paulkernfeld/bfgs
[INFO] tweaked toml for git repo https://github.com/paulkernfeld/bfgs written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/paulkernfeld/bfgs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e31d6d46e0431ff774980d2b6ef04cc9016a22be52d11d8014e729ca10dfb29c
[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" "e31d6d46e0431ff774980d2b6ef04cc9016a22be52d11d8014e729ca10dfb29c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e31d6d46e0431ff774980d2b6ef04cc9016a22be52d11d8014e729ca10dfb29c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e31d6d46e0431ff774980d2b6ef04cc9016a22be52d11d8014e729ca10dfb29c", kill_on_drop: false }`
[INFO] [stdout] e31d6d46e0431ff774980d2b6ef04cc9016a22be52d11d8014e729ca10dfb29c
[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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d55c48a47393032b3d5a44d9068b8c1694fea0af2141fe5dfdf92a31b6d0bb8
[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" "8d55c48a47393032b3d5a44d9068b8c1694fea0af2141fe5dfdf92a31b6d0bb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling matrixmultiply v0.1.14
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling ndarray v0.11.2
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]  Documenting bfgs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `bfgs`.
[INFO] [stdout] error[E0463]: can't find crate for `alloc_system`
[INFO] [stdout]   --> src/lib.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | extern crate alloc_system;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name bfgs 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 ndarray=/opt/rustwide/target/debug/deps/libndarray-f50a2a4d60b2afa5.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "8d55c48a47393032b3d5a44d9068b8c1694fea0af2141fe5dfdf92a31b6d0bb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d55c48a47393032b3d5a44d9068b8c1694fea0af2141fe5dfdf92a31b6d0bb8", kill_on_drop: false }`
[INFO] [stdout] 8d55c48a47393032b3d5a44d9068b8c1694fea0af2141fe5dfdf92a31b6d0bb8