# rustc version rustc 1.98.0-nightly (1f087276b 2026-06-13)
# docs.rs version docsrs 0.0.0 (886bc7a22b1adc4b387ce1343447fe3af98d9ce5 2026-06-14 )
# build log [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "DOCS_RS=1" "-w" "/opt/rustwide/workdir" "--user" "1001:1001" "be5f75abd1efb98172d00f174b49f8992d817c3228fc46c59bf34f56b67371e8" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--emit=invocation-specific\", \"--resource-suffix\", \"-20260613-1.98.0-nightly-1f087276b\", \"--static-root-path\", \"/-/rustdoc.static/\", \"--cap-lints\", \"warn\", \"--extern-html-root-takes-precedence\"]" "--offline" "-Zunstable-options" "--config=doc.extern-map.registries.crates-io=\"https://docs.rs/{pkg_name}/{version}/x86_64-unknown-linux-gnu\"" "-Zrustdoc-scrape-examples" "-j6" "--target" "x86_64-unknown-linux-gnu", kill_on_drop: false }` [INFO] [stderr] warning: target filter specified, but no targets matched; this is a no-op [INFO] [stderr] Documenting data-streams v2.0.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unresolved link to `N` [INFO] [stderr] --> src/source.rs:182:56 [INFO] [stderr] | [INFO] [stderr] 182 | /// Returns [`Error::End`] with the array length if [`N`] bytes cannot be read. [INFO] [stderr] | ^ no item named `N` in scope [INFO] [stderr] | [INFO] [stderr] = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]` [INFO] [stderr] = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `io::Write::write_all` [INFO] [stderr] --> src/sink.rs:24:28 [INFO] [stderr] | [INFO] [stderr] 24 | /// [`Write::write_all`]: io::Write::write_all [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ no item named `io` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:20:30 [INFO] [stderr] | [INFO] [stderr] 20 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:47:30 [INFO] [stderr] | [INFO] [stderr] 47 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:74:30 [INFO] [stderr] | [INFO] [stderr] 74 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:132:30 [INFO] [stderr] | [INFO] [stderr] 132 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:157:30 [INFO] [stderr] | [INFO] [stderr] 157 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:182:30 [INFO] [stderr] | [INFO] [stderr] 182 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:207:30 [INFO] [stderr] | [INFO] [stderr] 207 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:232:30 [INFO] [stderr] | [INFO] [stderr] 232 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:257:30 [INFO] [stderr] | [INFO] [stderr] 257 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:282:30 [INFO] [stderr] | [INFO] [stderr] 282 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:307:30 [INFO] [stderr] | [INFO] [stderr] 307 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:332:30 [INFO] [stderr] | [INFO] [stderr] 332 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:357:30 [INFO] [stderr] | [INFO] [stderr] 357 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:382:30 [INFO] [stderr] | [INFO] [stderr] 382 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:407:30 [INFO] [stderr] | [INFO] [stderr] 407 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:432:30 [INFO] [stderr] | [INFO] [stderr] 432 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:457:30 [INFO] [stderr] | [INFO] [stderr] 457 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:482:30 [INFO] [stderr] | [INFO] [stderr] 482 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:510:30 [INFO] [stderr] | [INFO] [stderr] 510 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:538:30 [INFO] [stderr] | [INFO] [stderr] 538 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:566:30 [INFO] [stderr] | [INFO] [stderr] 566 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:595:30 [INFO] [stderr] | [INFO] [stderr] 595 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:623:30 [INFO] [stderr] | [INFO] [stderr] 623 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:651:30 [INFO] [stderr] | [INFO] [stderr] 651 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:679:30 [INFO] [stderr] | [INFO] [stderr] 679 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:710:30 [INFO] [stderr] | [INFO] [stderr] 710 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:737:30 [INFO] [stderr] | [INFO] [stderr] 737 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:764:30 [INFO] [stderr] | [INFO] [stderr] 764 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: unresolved link to `Error::Overflow` [INFO] [stderr] --> src/sink.rs:798:30 [INFO] [stderr] | [INFO] [stderr] 798 | /// May return [`Overflow`](Error::Overflow) if the sink would exceed some hard [INFO] [stderr] | ^^^^^^^^^^^^^^^ no item named `Error` in scope [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source.rs:1113:2 [INFO] [stderr] | [INFO] [stderr] 1113 | default fn available(&self) -> usize { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source.rs:1117:2 [INFO] [stderr] | [INFO] [stderr] 1117 | default fn request(&mut self, count: usize) -> Result<bool> { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source.rs:1121:2 [INFO] [stderr] | [INFO] [stderr] 1121 | default fn skip(&mut self, count: usize) -> Result<usize> { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source.rs:1125:2 [INFO] [stderr] | [INFO] [stderr] 1125 | default fn read_bytes<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a [u8]> { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source.rs:1135:2 [INFO] [stderr] | [INFO] [stderr] 1135 | default fn read_exact_bytes<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a [u8]> { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source.rs:1154:2 [INFO] [stderr] | [INFO] [stderr] 1154 | default fn read_aligned_bytes<'a>(&mut self, buf: &'a mut [u8], alignment: usize) -> Result<&'a [u8]> { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source.rs:1175:2 [INFO] [stderr] | [INFO] [stderr] 1175 | default fn read_utf8<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a str> { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source.rs:1199:2 [INFO] [stderr] | [INFO] [stderr] 1199 | default fn read_utf8_codepoint(&mut self, buf: &mut [u8; 4]) -> Result<char> { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source.rs:1212:2 [INFO] [stderr] | [INFO] [stderr] 1212 | default fn read_ascii<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a [ascii::Char]> { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source.rs:1219:2 [INFO] [stderr] | [INFO] [stderr] 1219 | default fn read_to_end<'a>(&mut self, buf: &'a mut alloc::vec::Vec<u8>) -> Result<&'a [u8]> { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source.rs:1224:2 [INFO] [stderr] | [INFO] [stderr] 1224 | default fn read_utf8_to_end<'a>(&mut self, buf: &'a mut alloc::string::String) -> Result<&'a str> { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/source/impls.rs:50:3 [INFO] [stderr] | [INFO] [stderr] 50 | default fn size_hint(&self) -> Option<u64> { None } [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/sink.rs:857:2 [INFO] [stderr] | [INFO] [stderr] 857 | default fn write_owned_bytes(&mut self, buf: Vec<u8>) -> Result { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: specialization is experimental [INFO] [stderr] --> src/sink.rs:862:2 [INFO] [stderr] | [INFO] [stderr] 862 | default fn write_owned_utf8(&mut self, buf: String) -> Result { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information [INFO] [stderr] = help: add `#![feature(specialization)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-06-13; consider upgrading it if it is out of date [INFO] [stderr] = warning: unstable syntax can change at any point in the future, causing a hard error! [INFO] [stderr] = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045> [INFO] [stderr] [INFO] [stderr] warning: `data-streams` (lib doc) generated 45 warnings [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s [INFO] [stderr] Generated /opt/rustwide/target/x86_64-unknown-linux-gnu/doc/data_streams/index.html [INFO] running `Command { std: "docker" "inspect" "be5f75abd1efb98172d00f174b49f8992d817c3228fc46c59bf34f56b67371e8", kill_on_drop: false }`