[INFO] fetching crate tracing-subscriber 0.2.11...
[INFO] documenting tracing-subscriber-0.2.11 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate tracing-subscriber 0.2.11 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate tracing-subscriber 0.2.11 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracing-subscriber 0.2.11
[INFO] finished tweaking crates.io crate tracing-subscriber 0.2.11
[INFO] tweaked toml for crates.io crate tracing-subscriber 0.2.11 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", 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] e2bd35e556346201da42941957fe3d4ffc3c52d85927bd3b68a0b172de887f4b
[INFO] running `Command { std: "docker" "start" "-a" "e2bd35e556346201da42941957fe3d4ffc3c52d85927bd3b68a0b172de887f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2bd35e556346201da42941957fe3d4ffc3c52d85927bd3b68a0b172de887f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2bd35e556346201da42941957fe3d4ffc3c52d85927bd3b68a0b172de887f4b", kill_on_drop: false }`
[INFO] [stdout] e2bd35e556346201da42941957fe3d4ffc3c52d85927bd3b68a0b172de887f4b
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca3cb5c2a4d131083e5122bb3858bd8a53d07e46d6eb36ea0419cd3b08e70c96
[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" "ca3cb5c2a4d131083e5122bb3858bd8a53d07e46d6eb36ea0419cd3b08e70c96", kill_on_drop: false }`
[INFO] [stderr]     Checking sharded-slab v0.0.9
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking tracing-serde v0.1.1
[INFO] [stderr]  Documenting tracing-subscriber v0.2.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/fmt/format/json.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |   /// ```ignore,json
[INFO] [stdout]    |  _____^
[INFO] [stdout] 31 | | /// {
[INFO] [stdout] 32 | | ///     "timestamp":"Feb 20 11:28:15.096",
[INFO] [stdout] 33 | | ///     "level":"INFO",
[INFO] [stdout] ...  |
[INFO] [stdout] 38 | | /// }
[INFO] [stdout] 39 | | /// ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: error from rustc: unterminated double quote string
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.60s
[INFO] running `Command { std: "docker" "inspect" "ca3cb5c2a4d131083e5122bb3858bd8a53d07e46d6eb36ea0419cd3b08e70c96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca3cb5c2a4d131083e5122bb3858bd8a53d07e46d6eb36ea0419cd3b08e70c96", kill_on_drop: false }`
[INFO] [stdout] ca3cb5c2a4d131083e5122bb3858bd8a53d07e46d6eb36ea0419cd3b08e70c96