[INFO] cloning repository https://github.com/CPSSD/heracles
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CPSSD/heracles" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCPSSD%2Fheracles", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCPSSD%2Fheracles'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 73d83c777cdc8c25abae434611e30299dd14e9ab
[INFO] documenting CPSSD/heracles against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCPSSD%2Fheracles" "/workspace/builds/worker-63/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-63/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CPSSD/heracles on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CPSSD/heracles
[INFO] finished tweaking git repo https://github.com/CPSSD/heracles
[INFO] tweaked toml for git repo https://github.com/CPSSD/heracles written to /workspace/builds/worker-63/source/Cargo.toml
[INFO] crate git repo https://github.com/CPSSD/heracles already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fc090248490051d89a2ee3a2bceb0d96942ed01d2b272f9241ee95379866b5b
[INFO] running `Command { std: "docker" "start" "-a" "6fc090248490051d89a2ee3a2bceb0d96942ed01d2b272f9241ee95379866b5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fc090248490051d89a2ee3a2bceb0d96942ed01d2b272f9241ee95379866b5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fc090248490051d89a2ee3a2bceb0d96942ed01d2b272f9241ee95379866b5b", kill_on_drop: false }`
[INFO] [stdout] 6fc090248490051d89a2ee3a2bceb0d96942ed01d2b272f9241ee95379866b5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3c0b8202b93322e1958279ea4455c1a6f95bacb9980a20823389a0ab7b5a75a
[INFO] running `Command { std: "docker" "start" "-a" "f3c0b8202b93322e1958279ea4455c1a6f95bacb9980a20823389a0ab7b5a75a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking futures v0.1.19
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling linked-hash-map v0.5.1
[INFO] [stderr]    Compiling ucd-util v0.1.1
[INFO] [stderr]    Compiling itoa v0.4.1
[INFO] [stderr]    Compiling serde v1.0.36
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]    Compiling cookie-factory v0.2.2
[INFO] [stderr]    Compiling quick-error v1.2.1
[INFO] [stderr]    Compiling pest v0.3.3
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling cc v1.0.9
[INFO] [stderr]    Compiling remove_dir_all v0.5.0
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking scoped-tls v0.1.1
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking rustc-demangle v0.1.7
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking hex v0.2.0
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking yaml-rust v0.4.0
[INFO] [stderr] error: could not compile `serde`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.36/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=8bd3b3b5d95ddd47 -C extra-filename=-8bd3b3b5d95ddd47 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (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" "f3c0b8202b93322e1958279ea4455c1a6f95bacb9980a20823389a0ab7b5a75a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3c0b8202b93322e1958279ea4455c1a6f95bacb9980a20823389a0ab7b5a75a", kill_on_drop: false }`
[INFO] [stdout] f3c0b8202b93322e1958279ea4455c1a6f95bacb9980a20823389a0ab7b5a75a
