[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 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%2FRheoTommy%2Frust_at_coder" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/RheoTommy/rust_at_coder 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/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-13/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" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded petgraph v0.5.0
[INFO] [stderr]   Downloaded rand_xoshiro v0.4.0
[INFO] [stderr]   Downloaded ascii v1.0.0
[INFO] [stderr]   Downloaded permutohedron v0.2.4
[INFO] [stderr]   Downloaded superslice v1.0.0
[INFO] [stderr]   Downloaded bitmaps v2.1.0
[INFO] [stderr]   Downloaded sized-chunks v0.5.3
[INFO] [stderr]   Downloaded im-rc v14.3.0
[INFO] [stderr]   Downloaded syn v1.0.21
[INFO] [stderr]   Downloaded proconio-derive v0.1.6
[INFO] [stderr]   Downloaded bitset-fixed v0.1.0
[INFO] [stderr]   Downloaded whiteread v0.5.0
[INFO] [stderr]   Downloaded proconio v0.3.6
[INFO] [stderr]   Downloaded cargo-snippet v0.6.3
[INFO] [stderr]   Downloaded text_io v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] e3d1e31072f7a4426ee637c4e391b2ae0783b4e1d12fe246f6015ab79e5aa638
[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" "e3d1e31072f7a4426ee637c4e391b2ae0783b4e1d12fe246f6015ab79e5aa638", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3d1e31072f7a4426ee637c4e391b2ae0783b4e1d12fe246f6015ab79e5aa638", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3d1e31072f7a4426ee637c4e391b2ae0783b4e1d12fe246f6015ab79e5aa638", kill_on_drop: false }`
[INFO] [stdout] e3d1e31072f7a4426ee637c4e391b2ae0783b4e1d12fe246f6015ab79e5aa638
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5c6bd2b0329ccd5b60221172adc9ce3eaa2b197701d09e5610c9f9aca636e0c9
[INFO] running `Command { std: "docker" "start" "-a" "5c6bd2b0329ccd5b60221172adc9ce3eaa2b197701d09e5610c9f9aca636e0c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.21
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking permutohedron v0.2.4
[INFO] [stderr]    Compiling cargo-snippet v0.6.3
[INFO] [stderr]     Checking superslice v1.0.0
[INFO] [stderr]     Checking whiteread v0.5.0
[INFO] [stderr]     Checking bitset-fixed v0.1.0
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling im-rc v14.3.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]    Compiling proconio-derive v0.1.6
[INFO] [stderr]     Checking petgraph v0.5.0
[INFO] [stderr]     Checking rand_core v0.5.1
[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]     Checking rand v0.7.3
[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 ordered-float v1.0.2
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking num-iter v0.1.40
[INFO] [stderr]     Checking sized-chunks v0.5.3
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking ndarray v0.13.1
[INFO] [stderr]     Checking proconio v0.3.6
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking nalgebra v0.20.0
[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 lib --crate-name at_coder 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 alga=/opt/rustwide/target/debug/deps/libalga-5595b79fcf02ead5.rmeta --extern ascii=/opt/rustwide/target/debug/deps/libascii-ef32d6666b55b099.rmeta --extern bitset_fixed=/opt/rustwide/target/debug/deps/libbitset_fixed-6aae98163060a91a.rmeta --extern cargo_snippet=/opt/rustwide/target/debug/deps/libcargo_snippet-a66b2f2db2bd9f23.so --extern either=/opt/rustwide/target/debug/deps/libeither-c77042c908435a24.rmeta --extern fixedbitset=/opt/rustwide/target/debug/deps/libfixedbitset-4e1e1cff85be3b97.rmeta --extern getrandom=/opt/rustwide/target/debug/deps/libgetrandom-143b84008cfc8c5a.rmeta --extern im_rc=/opt/rustwide/target/debug/deps/libim_rc-a848c373dac3a43a.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-f7b1d1fb29023446.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-83b0824e0e267623.rmeta --extern itertools_num=/opt/rustwide/target/debug/deps/libitertools_num-671e5902d0cbc5d0.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern libm=/opt/rustwide/target/debug/deps/liblibm-1353067867354ce4.rmeta --extern maplit=/opt/rustwide/target/debug/deps/libmaplit-d389981351953744.rmeta --extern nalgebra=/opt/rustwide/target/debug/deps/libnalgebra-daa04f5524581300.rmeta --extern ndarray=/opt/rustwide/target/debug/deps/libndarray-b40b6c9544de96e1.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-2034964ed8d65f12.rmeta --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-6b23085e3ccd5b44.rmeta --extern num_complex=/opt/rustwide/target/debug/deps/libnum_complex-2397cd7b72cf9947.rmeta --extern num_derive=/opt/rustwide/target/debug/deps/libnum_derive-621eb0b6ad92c3c2.so --extern num_integer=/opt/rustwide/target/debug/deps/libnum_integer-4d433e4ac786212d.rmeta --extern num_iter=/opt/rustwide/target/debug/deps/libnum_iter-cce9146e23af7487.rmeta --extern num_rational=/opt/rustwide/target/debug/deps/libnum_rational-04cc48e7377642a0.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-76e9a6899ab550cc.rmeta --extern ordered_float=/opt/rustwide/target/debug/deps/libordered_float-8ed18fb5df6eb898.rmeta --extern permutohedron=/opt/rustwide/target/debug/deps/libpermutohedron-0ced619323eba3ff.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-81f90cd23b696ddf.rmeta --extern proconio=/opt/rustwide/target/debug/deps/libproconio-88f990219e393329.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-cdd7a7228a168a39.rmeta --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-f7219ad4a7ec95f3.rmeta --extern rand_core=/opt/rustwide/target/debug/deps/librand_core-7eb401cbe8eda5da.rmeta --extern rand_distr=/opt/rustwide/target/debug/deps/librand_distr-b244fc32010d0f61.rmeta --extern rand_hc=/opt/rustwide/target/debug/deps/librand_hc-27ce66e74effc4ed.rmeta --extern rand_pcg=/opt/rustwide/target/debug/deps/librand_pcg-119ecfc69f997fcb.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-376bb620e989ee0a.rmeta --extern rustc_hash=/opt/rustwide/target/debug/deps/librustc_hash-5440b0c1920eddab.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-cffcbd4b322ec378.rmeta --extern superslice=/opt/rustwide/target/debug/deps/libsuperslice-38ab6a75210280a8.rmeta --extern text_io=/opt/rustwide/target/debug/deps/libtext_io-c34a067b65136fe0.rmeta --extern whiteread=/opt/rustwide/target/debug/deps/libwhiteread-8929d7d148ec382c.rmeta --cap-lints=warn --crate-version 0.1.0` (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" "5c6bd2b0329ccd5b60221172adc9ce3eaa2b197701d09e5610c9f9aca636e0c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c6bd2b0329ccd5b60221172adc9ce3eaa2b197701d09e5610c9f9aca636e0c9", kill_on_drop: false }`
[INFO] [stdout] 5c6bd2b0329ccd5b60221172adc9ce3eaa2b197701d09e5610c9f9aca636e0c9