[INFO] cloning repository https://github.com/RheoTommy/rust_at_coder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RheoTommy/rust_at_coder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRheoTommy%2Frust_at_coder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRheoTommy%2Frust_at_coder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b696f66ac760ee49c621e814ad0a3d25674a38c
[INFO] documenting RheoTommy/rust_at_coder 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%2FRheoTommy%2Frust_at_coder" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/RheoTommy/rust_at_coder 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/RheoTommy/rust_at_coder
[INFO] finished tweaking git repo https://github.com/RheoTommy/rust_at_coder
[INFO] tweaked toml for git repo https://github.com/RheoTommy/rust_at_coder written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/RheoTommy/rust_at_coder 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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 0eaf2963bab334ba54900e219860b92190b4dcb5107b8d910b06c4ea259fa725
[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" "0eaf2963bab334ba54900e219860b92190b4dcb5107b8d910b06c4ea259fa725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0eaf2963bab334ba54900e219860b92190b4dcb5107b8d910b06c4ea259fa725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eaf2963bab334ba54900e219860b92190b4dcb5107b8d910b06c4ea259fa725", kill_on_drop: false }`
[INFO] [stdout] 0eaf2963bab334ba54900e219860b92190b4dcb5107b8d910b06c4ea259fa725
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 147ef6ff23a28e4f9c8e0614842c3346eced1b0f8cf16baf4b26f68fc32424be
[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" "147ef6ff23a28e4f9c8e0614842c3346eced1b0f8cf16baf4b26f68fc32424be", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.21
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking permutohedron v0.2.4
[INFO] [stderr]     Checking whiteread v0.5.0
[INFO] [stderr]    Compiling cargo-snippet v0.6.3
[INFO] [stderr]     Checking bitset-fixed v0.1.0
[INFO] [stderr]     Checking superslice v1.0.0
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling im-rc v14.3.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking num-integer v0.1.42
[INFO] [stderr]     Checking num-complex v0.2.4
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking itertools-num v0.1.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]     Checking rand_hc v0.2.0
[INFO] [stderr]    Compiling proconio-derive v0.1.6
[INFO] [stderr]     Checking petgraph v0.5.0
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking num-iter v0.1.40
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking ndarray v0.13.1
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking proconio v0.3.6
[INFO] [stderr]     Checking sized-chunks v0.5.3
[INFO] [stderr]     Checking nalgebra v0.20.0
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]     Checking at_coder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting at_coder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `at_coder`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name f src/bin/f.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern alga=/opt/rustwide/target/debug/deps/libalga-43d3101dd5d659b5.rmeta --extern ascii=/opt/rustwide/target/debug/deps/libascii-f82a898eb522fc34.rmeta --extern at_coder=/opt/rustwide/target/debug/deps/libat_coder-0b75ed720ef2a3a9.rmeta --extern bitset_fixed=/opt/rustwide/target/debug/deps/libbitset_fixed-5f3be5f6acf4461c.rmeta --extern cargo_snippet=/opt/rustwide/target/debug/deps/libcargo_snippet-cb84c6c4ec6d1b9e.so --extern either=/opt/rustwide/target/debug/deps/libeither-9bd75207ce9b518c.rmeta --extern fixedbitset=/opt/rustwide/target/debug/deps/libfixedbitset-636347d1d521fe14.rmeta --extern getrandom=/opt/rustwide/target/debug/deps/libgetrandom-081c9325f382ec75.rmeta --extern im_rc=/opt/rustwide/target/debug/deps/libim_rc-c830ceac4c4ab549.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-cf23e07877d29559.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-30a3734f28de156f.rmeta --extern itertools_num=/opt/rustwide/target/debug/deps/libitertools_num-c6eec1fb7ac4417a.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-57a7edc7f441d44c.rmeta --extern libm=/opt/rustwide/target/debug/deps/liblibm-b46b8b522bbdd82f.rmeta --extern maplit=/opt/rustwide/target/debug/deps/libmaplit-dd637e51935b99fa.rmeta --extern nalgebra=/opt/rustwide/target/debug/deps/libnalgebra-48fe3310d03cfedd.rmeta --extern ndarray=/opt/rustwide/target/debug/deps/libndarray-da84f04ec0522eed.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-1180c2a83525d77f.rmeta --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-f9cc628d7c270092.rmeta --extern num_complex=/opt/rustwide/target/debug/deps/libnum_complex-40b05745e3ee04b3.rmeta --extern num_derive=/opt/rustwide/target/debug/deps/libnum_derive-81205c05344e7655.so --extern num_integer=/opt/rustwide/target/debug/deps/libnum_integer-06a8bf53aa641944.rmeta --extern num_iter=/opt/rustwide/target/debug/deps/libnum_iter-469d23924961cdd9.rmeta --extern num_rational=/opt/rustwide/target/debug/deps/libnum_rational-9ecd848806e02e08.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-f0431936a6bf5b89.rmeta --extern ordered_float=/opt/rustwide/target/debug/deps/libordered_float-b65223d75cdadf70.rmeta --extern permutohedron=/opt/rustwide/target/debug/deps/libpermutohedron-476c7da6e7614d21.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-eb6e6aeed27faf14.rmeta --extern proconio=/opt/rustwide/target/debug/deps/libproconio-1361ed71f2ab6ea2.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-b1c9c13f8573cb98.rmeta --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-b2cd38853a77a463.rmeta --extern rand_core=/opt/rustwide/target/debug/deps/librand_core-77ffa6e3fa3f8c7d.rmeta --extern rand_distr=/opt/rustwide/target/debug/deps/librand_distr-0747972987a84402.rmeta --extern rand_hc=/opt/rustwide/target/debug/deps/librand_hc-528907ab5b3cc708.rmeta --extern rand_pcg=/opt/rustwide/target/debug/deps/librand_pcg-3220d00da146a2bb.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-144324b3e2dea50c.rmeta --extern rustc_hash=/opt/rustwide/target/debug/deps/librustc_hash-9639ffec26029748.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-a713cd427097383d.rmeta --extern superslice=/opt/rustwide/target/debug/deps/libsuperslice-06499d2d5e3b75da.rmeta --extern text_io=/opt/rustwide/target/debug/deps/libtext_io-ef9c17081cbd3b83.rmeta --extern whiteread=/opt/rustwide/target/debug/deps/libwhiteread-96e1a864f574e9ff.rmeta --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "147ef6ff23a28e4f9c8e0614842c3346eced1b0f8cf16baf4b26f68fc32424be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "147ef6ff23a28e4f9c8e0614842c3346eced1b0f8cf16baf4b26f68fc32424be", kill_on_drop: false }`
[INFO] [stdout] 147ef6ff23a28e4f9c8e0614842c3346eced1b0f8cf16baf4b26f68fc32424be