[INFO] cloning repository https://github.com/Lighty0410/exonum-heloworld
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lighty0410/exonum-heloworld" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLighty0410%2Fexonum-heloworld", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLighty0410%2Fexonum-heloworld'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d281ce1ebff15b2cd796257823accbcf64af3b55
[INFO] documenting Lighty0410/exonum-heloworld 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%2FLighty0410%2Fexonum-heloworld" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lighty0410/exonum-heloworld 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/Lighty0410/exonum-heloworld
[INFO] finished tweaking git repo https://github.com/Lighty0410/exonum-heloworld
[INFO] tweaked toml for git repo https://github.com/Lighty0410/exonum-heloworld written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Lighty0410/exonum-heloworld 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-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" "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] 6956ae3fb192416052124f561a4185c80bd058686abb63016524e44a4e1df32a
[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" "6956ae3fb192416052124f561a4185c80bd058686abb63016524e44a4e1df32a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6956ae3fb192416052124f561a4185c80bd058686abb63016524e44a4e1df32a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6956ae3fb192416052124f561a4185c80bd058686abb63016524e44a4e1df32a", kill_on_drop: false }`
[INFO] [stdout] 6956ae3fb192416052124f561a4185c80bd058686abb63016524e44a4e1df32a
[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" "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] f158f2b2971ea4d5c13b38148fcbdbd385350a2556575cd5c62d16dcae1537ad
[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" "f158f2b2971ea4d5c13b38148fcbdbd385350a2556575cd5c62d16dcae1537ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling protobuf v2.14.0
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking subtle v2.2.2
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling filetime v0.2.10
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling protoc v2.14.0
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking rpassword v4.0.5
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling bzip2-sys v0.1.8+1.0.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking secret-tree v0.2.0
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]    Compiling zip v0.5.5
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]    Compiling exonum_libsodium-sys v0.0.23
[INFO] [stderr]    Compiling bindgen v0.53.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling pin-project-internal v0.4.16
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling derive_more v0.99.5
[INFO] [stderr]    Compiling actix-macros v0.1.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling enum-as-inner v0.3.2
[INFO] [stderr]    Compiling async-trait v0.1.30
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.16
[INFO] [stderr]    Compiling actix-web-codegen v0.2.1
[INFO] [stderr] error: could not compile `darling_core`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name darling_core /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/darling_core-0.10.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="strsim"' --cfg 'feature="suggestions"' -C metadata=b8526fe4a8088954 -C extra-filename=-b8526fe4a8088954 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern fnv=/opt/rustwide/target/debug/deps/libfnv-8f907b988a4d6e14.rmeta --extern ident_case=/opt/rustwide/target/debug/deps/libident_case-634d7ab32771e49f.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-652cf63a980cc49c.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-c98bc69fce2dde8f.rmeta --extern strsim=/opt/rustwide/target/debug/deps/libstrsim-fce151227d345c46.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-2e2af386cfce9816.rmeta --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" "f158f2b2971ea4d5c13b38148fcbdbd385350a2556575cd5c62d16dcae1537ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f158f2b2971ea4d5c13b38148fcbdbd385350a2556575cd5c62d16dcae1537ad", kill_on_drop: false }`
[INFO] [stdout] f158f2b2971ea4d5c13b38148fcbdbd385350a2556575cd5c62d16dcae1537ad