[INFO] fetching crate leetcode_for_rust 0.1.37...
[INFO] documenting leetcode_for_rust-0.1.37 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate leetcode_for_rust 0.1.37 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate leetcode_for_rust 0.1.37 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 leetcode_for_rust 0.1.37
[INFO] finished tweaking crates.io crate leetcode_for_rust 0.1.37
[INFO] tweaked toml for crates.io crate leetcode_for_rust 0.1.37 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e6bcd14809493ae4a081b8759c12cb6e7e12e572bc65ce07afb993a64692103c
[INFO] running `Command { std: "docker" "start" "-a" "e6bcd14809493ae4a081b8759c12cb6e7e12e572bc65ce07afb993a64692103c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6bcd14809493ae4a081b8759c12cb6e7e12e572bc65ce07afb993a64692103c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6bcd14809493ae4a081b8759c12cb6e7e12e572bc65ce07afb993a64692103c", kill_on_drop: false }`
[INFO] [stdout] e6bcd14809493ae4a081b8759c12cb6e7e12e572bc65ce07afb993a64692103c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8bce4f8f87318bc06d81b988110b4e6f9d99f9046b51927f9b20c5e27371b45e
[INFO] running `Command { std: "docker" "start" "-a" "8bce4f8f87318bc06d81b988110b4e6f9d99f9046b51927f9b20c5e27371b45e", kill_on_drop: false }`
[INFO] [stderr]  Documenting leetcode_for_rust v0.1.37 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/cd0224_basic_calculator/mod.rs:88:16
[INFO] [stdout]    |
[INFO] [stdout] 88 |             '0'...'9' => {
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/cd0094_binary_tree_inorder_traversal/mod.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 8  | | //! Input: [1,null,2,3]
[INFO] [stdout] 9  | | //!    1
[INFO] [stdout] 10 | | //!     \
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | | //! Output: [1,3,2]
[INFO] [stdout] 16 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 7  | //! ```text
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/cd0098_validate_binary_search_tree/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 14 | | //! Input:
[INFO] [stdout] 15 | | //!     2
[INFO] [stdout] 16 | | //!    / \
[INFO] [stdout] 17 | | //!   1   3
[INFO] [stdout] 18 | | //! Output: true
[INFO] [stdout] 19 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 13 | //! ```text
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/cd0098_validate_binary_search_tree/mod.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 24 | | //!     5
[INFO] [stdout] 25 | | //!    / \
[INFO] [stdout] 26 | | //!   1   4
[INFO] [stdout] ...  |
[INFO] [stdout] 31 | | //!              is 5 but its right child's value is 4.
[INFO] [stdout] 32 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 23 | //! ```text
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/cd0102_binary_tree_level_order_traversal/mod.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 9  | | //!     3
[INFO] [stdout] 10 | | //!    / \
[INFO] [stdout] 11 | | //!   9  20
[INFO] [stdout] 12 | | //!     /  \
[INFO] [stdout] 13 | | //!    15   7
[INFO] [stdout] 14 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 8  | //! ```text
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/cd0104_maximum_depth_of_binary_tree/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 13 | | //!     3
[INFO] [stdout] 14 | | //!    / \
[INFO] [stdout] 15 | | //!   9  20
[INFO] [stdout] 16 | | //!     /  \
[INFO] [stdout] 17 | | //!    15   7
[INFO] [stdout] 18 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 12 | //! ```text
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/cd0111_minimum_depth_of_binary_tree/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 13 | | //!     3
[INFO] [stdout] 14 | | //!    / \
[INFO] [stdout] 15 | | //!   9  20
[INFO] [stdout] 16 | | //!     /  \
[INFO] [stdout] 17 | | //!    15   7
[INFO] [stdout] 18 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 12 | //! ```text
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/cd0144_binary_tree_preorder_traversal/mod.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 8  | | //! Input: [1,null,2,3]
[INFO] [stdout] 9  | | //!    1
[INFO] [stdout] 10 | | //!     \
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | | //! Output: [1,2,3]
[INFO] [stdout] 16 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 7  | //! ```text
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/cd0145_binary_tree_postorder_traversal/mod.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 8  | | //! Input: [1,null,2,3]
[INFO] [stdout] 9  | | //!    1
[INFO] [stdout] 10 | | //!     \
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | | //! Output: [3,2,1]
[INFO] [stdout] 16 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: error from rustc: unknown start of token: \
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 7  | //! ```text
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.81s
[INFO] running `Command { std: "docker" "inspect" "8bce4f8f87318bc06d81b988110b4e6f9d99f9046b51927f9b20c5e27371b45e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bce4f8f87318bc06d81b988110b4e6f9d99f9046b51927f9b20c5e27371b45e", kill_on_drop: false }`
[INFO] [stdout] 8bce4f8f87318bc06d81b988110b4e6f9d99f9046b51927f9b20c5e27371b45e