[INFO] fetching crate stage 0.2.0...
[INFO] documenting stage-0.2.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate stage 0.2.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate stage 0.2.0 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 stage 0.2.0
[INFO] finished tweaking crates.io crate stage 0.2.0
[INFO] tweaked toml for crates.io crate stage 0.2.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate stage 0.2.0 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mirai v0.0.4
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.3
[INFO] [stderr]   Downloaded dashmap v3.7.0
[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] aac081d031d646a850b556ab2df334fee678eab3d36834b39ea64a32df133823
[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" "aac081d031d646a850b556ab2df334fee678eab3d36834b39ea64a32df133823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aac081d031d646a850b556ab2df334fee678eab3d36834b39ea64a32df133823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aac081d031d646a850b556ab2df334fee678eab3d36834b39ea64a32df133823", kill_on_drop: false }`
[INFO] [stdout] aac081d031d646a850b556ab2df334fee678eab3d36834b39ea64a32df133823
[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] [stdout] 7be85b4ee90bfb02eba9b41e2d72401ddf39546ff8e5c3f6694d751f39ac2d20
[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" "7be85b4ee90bfb02eba9b41e2d72401ddf39546ff8e5c3f6694d751f39ac2d20", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]     Checking mio v0.7.0
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking tracing v0.1.13
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.3.2
[INFO] [stderr]     Checking dashmap v3.7.0
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking mirai v0.0.4
[INFO] [stderr]  Documenting stage v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.90s
[INFO] running `Command { std: "docker" "inspect" "7be85b4ee90bfb02eba9b41e2d72401ddf39546ff8e5c3f6694d751f39ac2d20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7be85b4ee90bfb02eba9b41e2d72401ddf39546ff8e5c3f6694d751f39ac2d20", kill_on_drop: false }`
[INFO] [stdout] 7be85b4ee90bfb02eba9b41e2d72401ddf39546ff8e5c3f6694d751f39ac2d20