[INFO] fetching crate pumpkinscript 0.2.0...
[INFO] documenting pumpkinscript-0.2.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate pumpkinscript 0.2.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate pumpkinscript 0.2.0 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 pumpkinscript 0.2.0
[INFO] finished tweaking crates.io crate pumpkinscript 0.2.0
[INFO] tweaked toml for crates.io crate pumpkinscript 0.2.0 written to /workspace/builds/worker-11/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] 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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 8bfde22857b0b1112ad42f061f1334ab190b7e97e2c6fd18f1122b5862942f79
[INFO] running `Command { std: "docker" "start" "-a" "8bfde22857b0b1112ad42f061f1334ab190b7e97e2c6fd18f1122b5862942f79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bfde22857b0b1112ad42f061f1334ab190b7e97e2c6fd18f1122b5862942f79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bfde22857b0b1112ad42f061f1334ab190b7e97e2c6fd18f1122b5862942f79", kill_on_drop: false }`
[INFO] [stdout] 8bfde22857b0b1112ad42f061f1334ab190b7e97e2c6fd18f1122b5862942f79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 99e0417a4a2aa2f705a08c47b1655e86ddc6d56325464ca4c68b3e1520050a41
[INFO] running `Command { std: "docker" "start" "-a" "99e0417a4a2aa2f705a08c47b1655e86ddc6d56325464ca4c68b3e1520050a41", kill_on_drop: false }`
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]  Documenting pumpkinscript v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:61:1
[INFO] [stdout]    |
[INFO] [stdout] 61 | #![feature(try_from)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `pumpkinscript`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name pumpkinscript 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 --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-cdbbc07100f440a1.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-12d981402adc9c98.rmeta --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-f960a7d8b3b1c191.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-d119838513653058.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "99e0417a4a2aa2f705a08c47b1655e86ddc6d56325464ca4c68b3e1520050a41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99e0417a4a2aa2f705a08c47b1655e86ddc6d56325464ca4c68b3e1520050a41", kill_on_drop: false }`
[INFO] [stdout] 99e0417a4a2aa2f705a08c47b1655e86ddc6d56325464ca4c68b3e1520050a41