[INFO] cloning repository https://github.com/web2solutions/servicer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/web2solutions/servicer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweb2solutions%2Fservicer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweb2solutions%2Fservicer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f80f857239f567b80de9942d0e8da6987e7fe89b
[INFO] documenting web2solutions/servicer against 1.55.0 for beta-1.56-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweb2solutions%2Fservicer" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/web2solutions/servicer on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/web2solutions/servicer
[INFO] finished tweaking git repo https://github.com/web2solutions/servicer
[INFO] tweaked toml for git repo https://github.com/web2solutions/servicer written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/web2solutions/servicer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-stream v0.1.5
[INFO] [stderr]   Downloaded pin-project-internal v1.0.6
[INFO] [stderr]   Downloaded httparse v1.3.6
[INFO] [stderr]   Downloaded redis v0.20.0
[INFO] [stderr]   Downloaded pin-project v1.0.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bca56aa221c0afda94149480ffb98466df18bf2810801277851b3d5ffd121652
[INFO] running `Command { std: "docker" "start" "-a" "bca56aa221c0afda94149480ffb98466df18bf2810801277851b3d5ffd121652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bca56aa221c0afda94149480ffb98466df18bf2810801277851b3d5ffd121652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bca56aa221c0afda94149480ffb98466df18bf2810801277851b3d5ffd121652", kill_on_drop: false }`
[INFO] [stdout] bca56aa221c0afda94149480ffb98466df18bf2810801277851b3d5ffd121652
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d69a3c4c1fbff436835380159d130cefa9930bd24784d1dd61d859c0cc48da4
[INFO] running `Command { std: "docker" "start" "-a" "7d69a3c4c1fbff436835380159d130cefa9930bd24784d1dd61d859c0cc48da4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling httparse v1.3.6
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking input_buffer v0.4.0
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking http-body v0.4.1
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking idna v0.2.2
[INFO] [stderr]     Checking sha-1 v0.9.4
[INFO] [stderr]     Checking url v2.2.1
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking combine v4.5.2
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling pin-project-internal v1.0.6
[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-1.0.125/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=abf30cce2f1adc0d -C extra-filename=-abf30cce2f1adc0d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-b2e96a1d7de1897d.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-adf9642750302e9c.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-140b4d2dfa497165.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" "7d69a3c4c1fbff436835380159d130cefa9930bd24784d1dd61d859c0cc48da4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d69a3c4c1fbff436835380159d130cefa9930bd24784d1dd61d859c0cc48da4", kill_on_drop: false }`
[INFO] [stdout] 7d69a3c4c1fbff436835380159d130cefa9930bd24784d1dd61d859c0cc48da4