[INFO] fetching crate rascii 0.1.2...
[INFO] documenting rascii-0.1.2 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate rascii 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rascii 0.1.2 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rascii 0.1.2
[INFO] finished tweaking crates.io crate rascii 0.1.2
[INFO] tweaked toml for crates.io crate rascii 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96f120d863b102868680a4c1b7e9285055de8a0b2f274d63e2928b2eaa3f5a08
[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" "96f120d863b102868680a4c1b7e9285055de8a0b2f274d63e2928b2eaa3f5a08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96f120d863b102868680a4c1b7e9285055de8a0b2f274d63e2928b2eaa3f5a08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96f120d863b102868680a4c1b7e9285055de8a0b2f274d63e2928b2eaa3f5a08", kill_on_drop: false }`
[INFO] [stdout] 96f120d863b102868680a4c1b7e9285055de8a0b2f274d63e2928b2eaa3f5a08
[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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 188d0c7b2d1c682188565b8274db9a943b57e3d5500d14dedd0271cf8c537545
[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" "188d0c7b2d1c682188565b8274db9a943b57e3d5500d14dedd0271cf8c537545", kill_on_drop: false }`
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking image v0.21.3
[INFO] [stderr]  Documenting rascii v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.00s
[INFO] running `Command { std: "docker" "inspect" "188d0c7b2d1c682188565b8274db9a943b57e3d5500d14dedd0271cf8c537545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "188d0c7b2d1c682188565b8274db9a943b57e3d5500d14dedd0271cf8c537545", kill_on_drop: false }`
[INFO] [stdout] 188d0c7b2d1c682188565b8274db9a943b57e3d5500d14dedd0271cf8c537545
