[INFO] fetching crate naja_async_runtime 0.3.4...
[INFO] documenting naja_async_runtime-0.3.4 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate naja_async_runtime 0.3.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate naja_async_runtime 0.3.4 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] removed /workspace/builds/worker-6/source/.cargo/config
[INFO] started tweaking crates.io crate naja_async_runtime 0.3.4
[INFO] finished tweaking crates.io crate naja_async_runtime 0.3.4
[INFO] tweaked toml for crates.io crate naja_async_runtime 0.3.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate naja_async_runtime 0.3.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.51
[INFO] [stderr]   Downloaded js-sys v0.3.28
[INFO] [stderr]   Downloaded once_cell v0.2.4
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.51
[INFO] [stderr]   Downloaded web-sys v0.3.28
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.1
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.1
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.51
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.51
[INFO] [stderr]   Downloaded wasm-bindgen-webidl v0.2.51
[INFO] [stderr]   Downloaded juliex v0.3.0-alpha.8
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.51
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 57aeb9fdedefd4e151078fb48dc19f89f0aa35107acdac4e76bafaa2abfbab9f
[INFO] running `Command { std: "docker" "start" "-a" "57aeb9fdedefd4e151078fb48dc19f89f0aa35107acdac4e76bafaa2abfbab9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57aeb9fdedefd4e151078fb48dc19f89f0aa35107acdac4e76bafaa2abfbab9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57aeb9fdedefd4e151078fb48dc19f89f0aa35107acdac4e76bafaa2abfbab9f", kill_on_drop: false }`
[INFO] [stdout] 57aeb9fdedefd4e151078fb48dc19f89f0aa35107acdac4e76bafaa2abfbab9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0f6b3ecbe5f0585498a5513883153e5a53b8bba925ed94ef03f999f0458ee7bf
[INFO] running `Command { std: "docker" "start" "-a" "0f6b3ecbe5f0585498a5513883153e5a53b8bba925ed94ef03f999f0458ee7bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking once_cell v0.2.4
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking crossbeam v0.7.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking backtrace v0.3.38
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking juliex v0.3.0-alpha.8
[INFO] [stderr]  Documenting naja_async_runtime v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.39s
[INFO] running `Command { std: "docker" "inspect" "0f6b3ecbe5f0585498a5513883153e5a53b8bba925ed94ef03f999f0458ee7bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f6b3ecbe5f0585498a5513883153e5a53b8bba925ed94ef03f999f0458ee7bf", kill_on_drop: false }`
[INFO] [stdout] 0f6b3ecbe5f0585498a5513883153e5a53b8bba925ed94ef03f999f0458ee7bf