[INFO] fetching crate heapsize_plugin 0.1.6...
[INFO] documenting heapsize_plugin-0.1.6 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate heapsize_plugin 0.1.6 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate heapsize_plugin 0.1.6 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 heapsize_plugin 0.1.6
[INFO] removed path dependency heapsize from crates.io crate heapsize_plugin 0.1.6
[INFO] finished tweaking crates.io crate heapsize_plugin 0.1.6
[INFO] tweaked toml for crates.io crate heapsize_plugin 0.1.6 written to /workspace/builds/worker-1/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 2b3040d299cc571d48c7679a971f1fa75fc6f3aa5a6d91de6d0b58b4476c3065
[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" "2b3040d299cc571d48c7679a971f1fa75fc6f3aa5a6d91de6d0b58b4476c3065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b3040d299cc571d48c7679a971f1fa75fc6f3aa5a6d91de6d0b58b4476c3065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b3040d299cc571d48c7679a971f1fa75fc6f3aa5a6d91de6d0b58b4476c3065", kill_on_drop: false }`
[INFO] [stdout] 2b3040d299cc571d48c7679a971f1fa75fc6f3aa5a6d91de6d0b58b4476c3065
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 54be790e6bd0ad516fb45249db160fe698c105a936502afe0d04a8e6a7d89561
[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" "54be790e6bd0ad516fb45249db160fe698c105a936502afe0d04a8e6a7d89561", kill_on_drop: false }`
[INFO] [stderr]  Documenting heapsize_plugin v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:10:30
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(plugin_registrar, quote, plugin, box_syntax, rustc_private)]
[INFO] [stdout]    |                              ^^^^^ feature has been removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0463, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `heapsize_plugin`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type dylib --crate-name heapsize_plugin src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.6` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "54be790e6bd0ad516fb45249db160fe698c105a936502afe0d04a8e6a7d89561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54be790e6bd0ad516fb45249db160fe698c105a936502afe0d04a8e6a7d89561", kill_on_drop: false }`
[INFO] [stdout] 54be790e6bd0ad516fb45249db160fe698c105a936502afe0d04a8e6a7d89561
