[INFO] cloning repository https://github.com/vmasdani/monty
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vmasdani/monty" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvmasdani%2Fmonty", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvmasdani%2Fmonty'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2bfb2bd3b6e4dc7986c5afd163e86eda2707733e
[INFO] documenting vmasdani/monty against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvmasdani%2Fmonty" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vmasdani/monty on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vmasdani/monty
[INFO] finished tweaking git repo https://github.com/vmasdani/monty
[INFO] tweaked toml for git repo https://github.com/vmasdani/monty written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/vmasdani/monty already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", 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] ffd90372615ebd8e86c19938e6ebbf216fc82f65cd19f6176b49cd5103bda467
[INFO] running `Command { std: "docker" "start" "-a" "ffd90372615ebd8e86c19938e6ebbf216fc82f65cd19f6176b49cd5103bda467", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffd90372615ebd8e86c19938e6ebbf216fc82f65cd19f6176b49cd5103bda467", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffd90372615ebd8e86c19938e6ebbf216fc82f65cd19f6176b49cd5103bda467", kill_on_drop: false }`
[INFO] [stdout] ffd90372615ebd8e86c19938e6ebbf216fc82f65cd19f6176b49cd5103bda467
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c86026400096c9c349efe3829df642e9257fd09420adb0402a229f0b25d8909
[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" "5c86026400096c9c349efe3829df642e9257fd09420adb0402a229f0b25d8909", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling smallvec v1.5.1
[INFO] [stderr]    Compiling native-tls v0.2.6
[INFO] [stderr]    Compiling openssl-src v111.13.0+1.1.1i
[INFO] [stderr]    Compiling libsqlite3-sys v0.18.0
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking net2 v0.2.36
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking parking_lot_core v0.8.1
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking brotli-sys v0.3.2
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.5
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking r2d2 v0.8.9
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling actix-macros v0.1.3
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]    Compiling v_escape_derive v0.8.4
[INFO] [stderr]    Compiling actix-web-codegen v0.4.0
[INFO] [stderr]     Checking tokio v0.2.23
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking futures-util v0.3.8
[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-1.0.118/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=66f150b4b956732a -C extra-filename=-66f150b4b956732a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-540b6631119ce641.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-2d316e7355c2bd28.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-17cabe213c54c251.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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5c86026400096c9c349efe3829df642e9257fd09420adb0402a229f0b25d8909", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c86026400096c9c349efe3829df642e9257fd09420adb0402a229f0b25d8909", kill_on_drop: false }`
[INFO] [stdout] 5c86026400096c9c349efe3829df642e9257fd09420adb0402a229f0b25d8909
