[INFO] fetching crate async-json-rpc 0.2.2...
[INFO] documenting async-json-rpc-0.2.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate async-json-rpc 0.2.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate async-json-rpc 0.2.2 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 async-json-rpc 0.2.2
[INFO] finished tweaking crates.io crate async-json-rpc 0.2.2
[INFO] tweaked toml for crates.io crate async-json-rpc 0.2.2 written to /workspace/builds/worker-8/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] fc20586eadca49cf522ecb4e3f88be3958df742668729728b10e26ad76c4cf70
[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" "fc20586eadca49cf522ecb4e3f88be3958df742668729728b10e26ad76c4cf70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc20586eadca49cf522ecb4e3f88be3958df742668729728b10e26ad76c4cf70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc20586eadca49cf522ecb4e3f88be3958df742668729728b10e26ad76c4cf70", kill_on_drop: false }`
[INFO] [stdout] fc20586eadca49cf522ecb4e3f88be3958df742668729728b10e26ad76c4cf70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 96dda667681849f7a3cd1180125f83dc59f47381cfde1ccb1cd321c5cdbee2e0
[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" "96dda667681849f7a3cd1180125f83dc59f47381cfde1ccb1cd321c5cdbee2e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.2
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking tracing-core v0.1.15
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]  Documenting async-json-rpc v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.98s
[INFO] running `Command { std: "docker" "inspect" "96dda667681849f7a3cd1180125f83dc59f47381cfde1ccb1cd321c5cdbee2e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96dda667681849f7a3cd1180125f83dc59f47381cfde1ccb1cd321c5cdbee2e0", kill_on_drop: false }`
[INFO] [stdout] 96dda667681849f7a3cd1180125f83dc59f47381cfde1ccb1cd321c5cdbee2e0