[INFO] fetching crate replacing-buf-stream 0.1.0...
[INFO] documenting replacing-buf-stream-0.1.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate replacing-buf-stream 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate replacing-buf-stream 0.1.0 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 replacing-buf-stream 0.1.0
[INFO] finished tweaking crates.io crate replacing-buf-stream 0.1.0
[INFO] tweaked toml for crates.io crate replacing-buf-stream 0.1.0 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 5e873350ce6ceda46d26f97f5732e93513d7667eeff7a1bf15f33f21b6c27c5c
[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" "5e873350ce6ceda46d26f97f5732e93513d7667eeff7a1bf15f33f21b6c27c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e873350ce6ceda46d26f97f5732e93513d7667eeff7a1bf15f33f21b6c27c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e873350ce6ceda46d26f97f5732e93513d7667eeff7a1bf15f33f21b6c27c5c", kill_on_drop: false }`
[INFO] [stdout] 5e873350ce6ceda46d26f97f5732e93513d7667eeff7a1bf15f33f21b6c27c5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 52300ea3c689225e01329504aa21ab980484137a2db48f6446e62531551e4095
[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" "52300ea3c689225e01329504aa21ab980484137a2db48f6446e62531551e4095", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.2
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]     Checking tower-service v0.1.0
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]     Checking serde_plain v0.3.0
[INFO] [stderr]     Checking checked v0.5.0
[INFO] [stderr]     Checking atoi v0.2.3
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking headers-core v0.1.1
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]     Checking headers v0.2.3
[INFO] [stderr]    Compiling mime_guess v1.8.8
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling proc-macro-hack v0.4.2
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking handlebars v1.0.5
[INFO] [stderr]    Compiling tower-web-macros v0.3.5
[INFO] [stderr]     Checking tower-web v0.3.7
[INFO] [stderr]  Documenting replacing-buf-stream v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.81s
[INFO] running `Command { std: "docker" "inspect" "52300ea3c689225e01329504aa21ab980484137a2db48f6446e62531551e4095", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52300ea3c689225e01329504aa21ab980484137a2db48f6446e62531551e4095", kill_on_drop: false }`
[INFO] [stdout] 52300ea3c689225e01329504aa21ab980484137a2db48f6446e62531551e4095