[INFO] cloning repository https://github.com/Romira915/combinatorial_optimization_solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Romira915/combinatorial_optimization_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRomira915%2Fcombinatorial_optimization_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRomira915%2Fcombinatorial_optimization_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b5db92b80766faeac70ab8855a24b8290d9b514
[INFO] documenting Romira915/combinatorial_optimization_solver against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRomira915%2Fcombinatorial_optimization_solver" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
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[INFO] validating manifest of git repo https://github.com/Romira915/combinatorial_optimization_solver on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Romira915/combinatorial_optimization_solver
[INFO] finished tweaking git repo https://github.com/Romira915/combinatorial_optimization_solver
[INFO] tweaked toml for git repo https://github.com/Romira915/combinatorial_optimization_solver written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Romira915/combinatorial_optimization_solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3296355d7072cadb5ed2a5d1049d2b0ade563e1a9f6198f02d4822604cfa88fd
[INFO] running `Command { std: "docker" "start" "-a" "3296355d7072cadb5ed2a5d1049d2b0ade563e1a9f6198f02d4822604cfa88fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3296355d7072cadb5ed2a5d1049d2b0ade563e1a9f6198f02d4822604cfa88fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3296355d7072cadb5ed2a5d1049d2b0ade563e1a9f6198f02d4822604cfa88fd", kill_on_drop: false }`
[INFO] [stdout] 3296355d7072cadb5ed2a5d1049d2b0ade563e1a9f6198f02d4822604cfa88fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4dffc1b95efdc877c9d8b2d65a57d2180ff3e8938863ccb21f6abb87ed13e682
[INFO] running `Command { std: "docker" "start" "-a" "4dffc1b95efdc877c9d8b2d65a57d2180ff3e8938863ccb21f6abb87ed13e682", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling version_check v0.9.3
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[INFO] [stderr]     Checking ppv-lite86 v0.2.10
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[INFO] [stderr]    Compiling serde v1.0.127
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[INFO] [stderr]     Checking lazy_static v1.4.0
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[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
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[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking rand v0.7.3
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[INFO] [stderr]     Checking rand v0.8.4
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[INFO] [stderr]    Compiling mime_guess v2.0.3
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[INFO] [stderr]     Checking rand_distr v0.4.1
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[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling command_attr v0.3.7
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking webpki-roots v0.21.1
[INFO] [stderr]     Checking webpki-roots v0.20.0
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr] error: could not compile `serde_derive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_derive /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.127/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=e3d2278c53f2c105 -C extra-filename=-e3d2278c53f2c105 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-99e494321b9801a4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-14520ee950573b38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-2c03f3403e6ad4b6.rlib --extern proc_macro --cap-lints allow --cfg underscore_consts` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4dffc1b95efdc877c9d8b2d65a57d2180ff3e8938863ccb21f6abb87ed13e682", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dffc1b95efdc877c9d8b2d65a57d2180ff3e8938863ccb21f6abb87ed13e682", kill_on_drop: false }`
[INFO] [stdout] 4dffc1b95efdc877c9d8b2d65a57d2180ff3e8938863ccb21f6abb87ed13e682