[INFO] fetching crate libp2p-yamux 0.21.0...
[INFO] documenting libp2p-yamux-0.21.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate libp2p-yamux 0.21.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate libp2p-yamux 0.21.0 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 libp2p-yamux 0.21.0
[INFO] finished tweaking crates.io crate libp2p-yamux 0.21.0
[INFO] tweaked toml for crates.io crate libp2p-yamux 0.21.0 written to /workspace/builds/worker-12/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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] c05a709c896771f09873a3272e7480320b1eb0e6d116e0eb591f08ad3e423382
[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" "c05a709c896771f09873a3272e7480320b1eb0e6d116e0eb591f08ad3e423382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c05a709c896771f09873a3272e7480320b1eb0e6d116e0eb591f08ad3e423382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c05a709c896771f09873a3272e7480320b1eb0e6d116e0eb591f08ad3e423382", kill_on_drop: false }`
[INFO] [stdout] c05a709c896771f09873a3272e7480320b1eb0e6d116e0eb591f08ad3e423382
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 449e9a2a67f242ed32d49ee9a63ab1dcbe6a210e3af86a792ae9026fd875d66d
[INFO] running `Command { std: "docker" "start" "-a" "449e9a2a67f242ed32d49ee9a63ab1dcbe6a210e3af86a792ae9026fd875d66d", kill_on_drop: false }`
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking unsigned-varint v0.4.0
[INFO] [stderr]     Checking unsigned-varint v0.5.0
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking ed25519-dalek v1.0.0
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking blake2b_simd v0.5.10
[INFO] [stderr]     Checking blake2s_simd v0.5.10
[INFO] [stderr]     Checking multihash v0.11.4
[INFO] [stderr]     Checking parity-multiaddr v0.9.2
[INFO] [stderr]    Compiling libp2p-core v0.21.0
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking multistream-select v0.8.2
[INFO] [stderr]     Checking rw-stream-sink v0.2.1
[INFO] [stderr]     Checking yamux v0.4.9
[INFO] [stderr]  Documenting libp2p-yamux v0.21.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.35s
[INFO] running `Command { std: "docker" "inspect" "449e9a2a67f242ed32d49ee9a63ab1dcbe6a210e3af86a792ae9026fd875d66d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "449e9a2a67f242ed32d49ee9a63ab1dcbe6a210e3af86a792ae9026fd875d66d", kill_on_drop: false }`
[INFO] [stdout] 449e9a2a67f242ed32d49ee9a63ab1dcbe6a210e3af86a792ae9026fd875d66d