[INFO] fetching crate algo 0.1.9...
[INFO] documenting algo-0.1.9 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate algo 0.1.9 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate algo 0.1.9 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 algo 0.1.9
[INFO] finished tweaking crates.io crate algo 0.1.9
[INFO] tweaked toml for crates.io crate algo 0.1.9 written to /workspace/builds/worker-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] 8acabe81138516e57de7cdaeb5bc4795934c35dded7a746c408352406e22a02c
[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" "8acabe81138516e57de7cdaeb5bc4795934c35dded7a746c408352406e22a02c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8acabe81138516e57de7cdaeb5bc4795934c35dded7a746c408352406e22a02c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8acabe81138516e57de7cdaeb5bc4795934c35dded7a746c408352406e22a02c", kill_on_drop: false }`
[INFO] [stdout] 8acabe81138516e57de7cdaeb5bc4795934c35dded7a746c408352406e22a02c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 05ccc03fe42e34683cc50a3a49b0c3234ec4ee3201ce6ca7986750aec387c9f7
[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" "05ccc03fe42e34683cc50a3a49b0c3234ec4ee3201ce6ca7986750aec387c9f7", kill_on_drop: false }`
[INFO] [stderr]  Documenting algo v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]   --> src/search/max_subarray.rs:41:56
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let (left_idx, left_max) = cross_part_max(arr, (low...mid).rev());
[INFO] [stdout]    |                                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let (left_idx, left_max) = cross_part_max(arr, (low..mid).rev());
[INFO] [stdout]    |                                                        ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let (left_idx, left_max) = cross_part_max(arr, (low..=mid).rev());
[INFO] [stdout]    |                                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]   --> src/search/max_subarray.rs:42:63
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let (right_idx, right_max) = cross_part_max(arr, (mid + 1)...high);
[INFO] [stdout]    |                                                               ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let (right_idx, right_max) = cross_part_max(arr, (mid + 1)..high);
[INFO] [stdout]    |                                                               ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let (right_idx, right_max) = cross_part_max(arr, (mid + 1)..=high);
[INFO] [stdout]    |                                                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `std::num::Zero`, `std::num::One`
[INFO] [stdout]  --> src/math/gcd.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::num::{Zero, One};
[INFO] [stdout]   |                ^^^^  ^^^ no `One` in `num`
[INFO] [stdout]   |                |
[INFO] [stdout]   |                no `Zero` in `num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::num::Zero`
[INFO] [stdout]  --> src/math/lcm.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::num::Zero;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^ no `Zero` in `num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(zero_one, inclusive_range_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `algo`.
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name algo 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` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "05ccc03fe42e34683cc50a3a49b0c3234ec4ee3201ce6ca7986750aec387c9f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05ccc03fe42e34683cc50a3a49b0c3234ec4ee3201ce6ca7986750aec387c9f7", kill_on_drop: false }`
[INFO] [stdout] 05ccc03fe42e34683cc50a3a49b0c3234ec4ee3201ce6ca7986750aec387c9f7