[INFO] fetching crate jsonrpc-core 14.2.0...
[INFO] documenting jsonrpc-core-14.2.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate jsonrpc-core 14.2.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate jsonrpc-core 14.2.0 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 jsonrpc-core 14.2.0
[INFO] finished tweaking crates.io crate jsonrpc-core 14.2.0
[INFO] tweaked toml for crates.io crate jsonrpc-core 14.2.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate jsonrpc-core 14.2.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 170fa61e8603e59847b057e581f6013e31df7ae4142e1002d8c3e069b3e469c2
[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" "170fa61e8603e59847b057e581f6013e31df7ae4142e1002d8c3e069b3e469c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "170fa61e8603e59847b057e581f6013e31df7ae4142e1002d8c3e069b3e469c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "170fa61e8603e59847b057e581f6013e31df7ae4142e1002d8c3e069b3e469c2", kill_on_drop: false }`
[INFO] [stdout] 170fa61e8603e59847b057e581f6013e31df7ae4142e1002d8c3e069b3e469c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 4f9c8a054ef11f99e3a51729df4327b8f599a699dcab55b6a7f915b8be3d51df
[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" "4f9c8a054ef11f99e3a51729df4327b8f599a699dcab55b6a7f915b8be3d51df", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]  Documenting jsonrpc-core v14.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.84s
[INFO] running `Command { std: "docker" "inspect" "4f9c8a054ef11f99e3a51729df4327b8f599a699dcab55b6a7f915b8be3d51df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f9c8a054ef11f99e3a51729df4327b8f599a699dcab55b6a7f915b8be3d51df", kill_on_drop: false }`
[INFO] [stdout] 4f9c8a054ef11f99e3a51729df4327b8f599a699dcab55b6a7f915b8be3d51df