[INFO] fetching crate an-rope 0.3.1...
[INFO] documenting an-rope-0.3.1 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate an-rope 0.3.1 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate an-rope 0.3.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate an-rope 0.3.1
[INFO] finished tweaking crates.io crate an-rope 0.3.1
[INFO] tweaked toml for crates.io crate an-rope 0.3.1 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c6f589c99c4df4275f4815773f2c5a68892d39cff244bf63fdccec1369891c7
[INFO] running `Command { std: "docker" "start" "-a" "6c6f589c99c4df4275f4815773f2c5a68892d39cff244bf63fdccec1369891c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c6f589c99c4df4275f4815773f2c5a68892d39cff244bf63fdccec1369891c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c6f589c99c4df4275f4815773f2c5a68892d39cff244bf63fdccec1369891c7", kill_on_drop: false }`
[INFO] [stdout] 6c6f589c99c4df4275f4815773f2c5a68892d39cff244bf63fdccec1369891c7
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 487f0a62f9d73ec48a6424bf22a1678dcd63fb14d09bd5121b7df7ebd333b5b9
[INFO] running `Command { std: "docker" "start" "-a" "487f0a62f9d73ec48a6424bf22a1678dcd63fb14d09bd5121b7df7ebd333b5b9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking macro-attr v0.2.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]  Documenting an-rope v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Zero`
[INFO] [stdout]   --> src/metric.rs:84:58
[INFO] [stdout]    |
[INFO] [stdout] 84 | ///        represent the "identity" operation using the [`Zero`] trait rather
[INFO] [stdout]    |                                                          ^^^^^^ no item named `Zero` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `t`
[INFO] [stdout]   --> src/metric.rs:85:75
[INFO] [stdout]    |
[INFO] [stdout] 85 | ///        than [`Default`], as the documentation for `Zero` notes that "[t]his
[INFO] [stdout]    |                                                                           ^ no item named `t` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `Zero`
[INFO] [stdout]   --> src/metric.rs:90:6
[INFO] [stdout]    |
[INFO] [stdout] 90 | /// [`Zero`]: https://doc.rust-lang.org/std/num/trait.Zero.html
[INFO] [stdout]    |      ^^^^^^ no item named `Zero` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `graphemes`
[INFO] [stdout]    --> src/lib.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |            $(#[$attr])*
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/internals/mod.rs:582:5
[INFO] [stdout]     |
[INFO] [stdout] 582 | /     unicode_seg_iters! {
[INFO] [stdout] 583 | |         #[doc=
[INFO] [stdout] 584 | |             "Returns an iterator over the [grapheme clusters][graphemes] of \
[INFO] [stdout] 585 | |              `self`.\n\
[INFO] [stdout] ...   |
[INFO] [stdout] 596 | |         impl graphemes for Node { extend }
[INFO] [stdout] 597 | |     }
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: the link appears in this line:
[INFO] [stdout]             
[INFO] [stdout]             Returns an iterator over the [grapheme clusters][graphemes] of `self`.
[INFO] [stdout]                                                              ^^^^^^^^^
[INFO] [stdout]     = note: no item named `graphemes` in scope
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout]     = note: this warning originates in the macro `unstable_iters` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `graphemes`
[INFO] [stdout]    --> src/lib.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |            $(#[$attr])*
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/internals/mod.rs:582:5
[INFO] [stdout]     |
[INFO] [stdout] 582 | /     unicode_seg_iters! {
[INFO] [stdout] 583 | |         #[doc=
[INFO] [stdout] 584 | |             "Returns an iterator over the [grapheme clusters][graphemes] of \
[INFO] [stdout] 585 | |              `self`.\n\
[INFO] [stdout] ...   |
[INFO] [stdout] 596 | |         impl graphemes for Node { extend }
[INFO] [stdout] 597 | |     }
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: the link appears in this line:
[INFO] [stdout]             
[INFO] [stdout]             [graphemes]: http://www.unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries
[INFO] [stdout]              ^^^^^^^^^
[INFO] [stdout]     = note: no item named `graphemes` in scope
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout]     = note: this warning originates in the macro `unstable_iters` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `graphemes`
[INFO] [stdout]    --> src/lib.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |            $(#[$attr])*
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 814 | /     unicode_seg_iters! {
[INFO] [stdout] 815 | |         #[doc=
[INFO] [stdout] 816 | |             "Returns an iterator over the [grapheme clusters][graphemes] of \
[INFO] [stdout] 817 | |              `self`.\n\
[INFO] [stdout] ...   |
[INFO] [stdout] 853 | |         // impl split_word_bound_indices<(usize, &'a str)> for Rope {}
[INFO] [stdout] 854 | |     }
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: the link appears in this line:
[INFO] [stdout]             
[INFO] [stdout]             Returns an iterator over the [grapheme clusters][graphemes] of `self`.
[INFO] [stdout]                                                              ^^^^^^^^^
[INFO] [stdout]     = note: no item named `graphemes` in scope
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout]     = note: this warning originates in the macro `unstable_iters` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `graphemes`
[INFO] [stdout]    --> src/lib.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |            $(#[$attr])*
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 814 | /     unicode_seg_iters! {
[INFO] [stdout] 815 | |         #[doc=
[INFO] [stdout] 816 | |             "Returns an iterator over the [grapheme clusters][graphemes] of \
[INFO] [stdout] 817 | |              `self`.\n\
[INFO] [stdout] ...   |
[INFO] [stdout] 853 | |         // impl split_word_bound_indices<(usize, &'a str)> for Rope {}
[INFO] [stdout] 854 | |     }
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: the link appears in this line:
[INFO] [stdout]             
[INFO] [stdout]             [graphemes]: http://www.unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries
[INFO] [stdout]              ^^^^^^^^^
[INFO] [stdout]     = note: no item named `graphemes` in scope
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout]     = note: this warning originates in the macro `unstable_iters` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]   --> src/lib.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | //! + http://scienceblogs.com/goodmath/2009/01/26/ropes-twining-together-strings/
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<http://scienceblogs.com/goodmath/2009/01/26/ropes-twining-together-strings/>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]    = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]   --> src/lib.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | //! + https://www.ibm.com/developerworks/library/j-ropes/
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://www.ibm.com/developerworks/library/j-ropes/>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]   --> src/lib.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | //! + http://citeseer.ist.psu.edu/viewdoc/download?doi=10.1.1.14.9450&rep=rep1&type=pdf
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<http://citeseer.ist.psu.edu/viewdoc/download?doi=10.1.1.14.9450&rep=rep1&type=pdf>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]   --> src/lib.rs:15:20
[INFO] [stdout]    |
[INFO] [stdout] 15 | //! [`an-editor`]: https://github.com/an-cabal/an-editor
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://github.com/an-cabal/an-editor>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]   --> src/metric.rs:89:18
[INFO] [stdout]    |
[INFO] [stdout] 89 | /// [`Default`]: https://doc.rust-lang.org/std/default/trait.Default.html)
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://doc.rust-lang.org/std/default/trait.Default.html>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]   --> src/metric.rs:90:15
[INFO] [stdout]    |
[INFO] [stdout] 90 | /// [`Zero`]: https://doc.rust-lang.org/std/num/trait.Zero.html
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://doc.rust-lang.org/std/num/trait.Zero.html>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]   --> src/metric.rs:91:15
[INFO] [stdout]    |
[INFO] [stdout] 91 | /// [Monoid]: http://mathworld.wolfram.com/Monoid.html
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<http://mathworld.wolfram.com/Monoid.html>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]    --> src/lib.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |            $(#[$attr])*
[INFO] [stdout]     |              ^^^^^^^^ help: use an automatic link instead: `<http://www.unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/internals/mod.rs:582:5
[INFO] [stdout]     |
[INFO] [stdout] 582 | /     unicode_seg_iters! {
[INFO] [stdout] 583 | |         #[doc=
[INFO] [stdout] 584 | |             "Returns an iterator over the [grapheme clusters][graphemes] of \
[INFO] [stdout] 585 | |              `self`.\n\
[INFO] [stdout] ...   |
[INFO] [stdout] 596 | |         impl graphemes for Node { extend }
[INFO] [stdout] 597 | |     }
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout]     = note: this warning originates in the macro `unstable_iters` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]    --> src/lib.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |            $(#[$attr])*
[INFO] [stdout]     |              ^^^^^^^^ help: use an automatic link instead: `<http://www.unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries>`
[INFO] [stdout] ...
[INFO] [stdout] 814 | /     unicode_seg_iters! {
[INFO] [stdout] 815 | |         #[doc=
[INFO] [stdout] 816 | |             "Returns an iterator over the [grapheme clusters][graphemes] of \
[INFO] [stdout] 817 | |              `self`.\n\
[INFO] [stdout] ...   |
[INFO] [stdout] 853 | |         // impl split_word_bound_indices<(usize, &'a str)> for Rope {}
[INFO] [stdout] 854 | |     }
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout]     = note: this warning originates in the macro `unstable_iters` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.23s
[INFO] running `Command { std: "docker" "inspect" "487f0a62f9d73ec48a6424bf22a1678dcd63fb14d09bd5121b7df7ebd333b5b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "487f0a62f9d73ec48a6424bf22a1678dcd63fb14d09bd5121b7df7ebd333b5b9", kill_on_drop: false }`
[INFO] [stdout] 487f0a62f9d73ec48a6424bf22a1678dcd63fb14d09bd5121b7df7ebd333b5b9
