[INFO] fetching crate gcp_client 0.1.4...
[INFO] documenting gcp_client-0.1.4 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate gcp_client 0.1.4 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate gcp_client 0.1.4 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gcp_client 0.1.4
[INFO] finished tweaking crates.io crate gcp_client 0.1.4
[INFO] tweaked toml for crates.io crate gcp_client 0.1.4 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4732825e47c7a1e360cd8f5f6b2dd0e28230a718c69d3a867d9c4053214dd908
[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" "4732825e47c7a1e360cd8f5f6b2dd0e28230a718c69d3a867d9c4053214dd908", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4732825e47c7a1e360cd8f5f6b2dd0e28230a718c69d3a867d9c4053214dd908", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4732825e47c7a1e360cd8f5f6b2dd0e28230a718c69d3a867d9c4053214dd908", kill_on_drop: false }`
[INFO] [stdout] 4732825e47c7a1e360cd8f5f6b2dd0e28230a718c69d3a867d9c4053214dd908
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8f88baec6b8573554efbe3ef11bdd093fbbb159a2526149beac1ddeaa96a305
[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" "f8f88baec6b8573554efbe3ef11bdd093fbbb159a2526149beac1ddeaa96a305", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking tower-layer v0.3.0
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.40
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking prost v0.6.1
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tower-make v0.3.0
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tower-ready-cache v0.3.1
[INFO] [stderr]     Checking tower-timeout v0.3.0
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking prost-types v0.6.1
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]     Checking tower-balance v0.3.0
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]     Checking tonic v0.2.1
[INFO] [stderr]  Documenting gcp_client v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `gcp_client`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name gcp_client src/mod.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern prost=/opt/rustwide/target/debug/deps/libprost-67cd374678dedf47.rmeta --extern prost_types=/opt/rustwide/target/debug/deps/libprost_types-aa44c03970d9db87.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-0b7f9eeb98717e9f.rmeta --extern tonic=/opt/rustwide/target/debug/deps/libtonic-84f1c9d4bcabe7c0.rmeta --cap-lints=warn --crate-version 0.1.4` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "f8f88baec6b8573554efbe3ef11bdd093fbbb159a2526149beac1ddeaa96a305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8f88baec6b8573554efbe3ef11bdd093fbbb159a2526149beac1ddeaa96a305", kill_on_drop: false }`
[INFO] [stdout] f8f88baec6b8573554efbe3ef11bdd093fbbb159a2526149beac1ddeaa96a305