[INFO] cloning repository https://github.com/NightEule5/data-streams
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NightEule5/data-streams" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNightEule5%2Fdata-streams", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNightEule5%2Fdata-streams'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 806587d60e3832be29b6b8e7fbef72ca60dbf438
[INFO] checking NightEule5/data-streams against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNightEule5%2Fdata-streams" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/NightEule5/data-streams
[INFO] finished tweaking git repo https://github.com/NightEule5/data-streams
[INFO] tweaked toml for git repo https://github.com/NightEule5/data-streams written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/NightEule5/data-streams on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/NightEule5/data-streams already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ea74ea85a80d07fa3f9bba8a14edf278e27a9de644e4e2d99af115088c58e90
[INFO] running `Command { std: "docker" "start" "-a" "9ea74ea85a80d07fa3f9bba8a14edf278e27a9de644e4e2d99af115088c58e90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ea74ea85a80d07fa3f9bba8a14edf278e27a9de644e4e2d99af115088c58e90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ea74ea85a80d07fa3f9bba8a14edf278e27a9de644e4e2d99af115088c58e90", kill_on_drop: false }`
[INFO] [stdout] 9ea74ea85a80d07fa3f9bba8a14edf278e27a9de644e4e2d99af115088c58e90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 842ce3ca5a6ab98c9ba8288ef7fd5c31c3eaab9f2a9199e5803cb2f8593ad2a4
[INFO] running `Command { std: "docker" "start" "-a" "842ce3ca5a6ab98c9ba8288ef7fd5c31c3eaab9f2a9199e5803cb2f8593ad2a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.72
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]     Checking bitflags v2.9.1
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking bit-vec v0.8.0
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]     Checking bytemuck v1.23.1
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking simdutf8 v0.1.5
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking rustix v0.38.34
[INFO] [stderr]     Checking bit-set v0.8.0
[INFO] [stderr]     Checking rand_xorshift v0.4.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking data-streams v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1113:2
[INFO] [stdout]      |
[INFO] [stdout] 1113 |     default fn available(&self) -> usize {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1117:2
[INFO] [stdout]      |
[INFO] [stdout] 1117 |     default fn request(&mut self, count: usize) -> Result<bool> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1121:2
[INFO] [stdout]      |
[INFO] [stdout] 1121 |     default fn skip(&mut self, count: usize) -> Result<usize> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1125:2
[INFO] [stdout]      |
[INFO] [stdout] 1125 |     default fn read_bytes<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a [u8]> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1135:2
[INFO] [stdout]      |
[INFO] [stdout] 1135 |     default fn read_exact_bytes<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a [u8]> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1154:2
[INFO] [stdout]      |
[INFO] [stdout] 1154 |     default fn read_aligned_bytes<'a>(&mut self, buf: &'a mut [u8], alignment: usize) -> Result<&'a [u8]> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1175:2
[INFO] [stdout]      |
[INFO] [stdout] 1175 |     default fn read_utf8<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a str> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1199:2
[INFO] [stdout]      |
[INFO] [stdout] 1199 |     default fn read_utf8_codepoint(&mut self, buf: &mut [u8; 4]) -> Result<char> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1212:2
[INFO] [stdout]      |
[INFO] [stdout] 1212 |     default fn read_ascii<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a [ascii::Char]> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1219:2
[INFO] [stdout]      |
[INFO] [stdout] 1219 |     default fn read_to_end<'a>(&mut self, buf: &'a mut alloc::vec::Vec<u8>) -> Result<&'a [u8]> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1224:2
[INFO] [stdout]      |
[INFO] [stdout] 1224 |     default fn read_utf8_to_end<'a>(&mut self, buf: &'a mut alloc::string::String) -> Result<&'a str> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]   --> src/source/impls.rs:50:3
[INFO] [stdout]    |
[INFO] [stdout] 50 |         default fn size_hint(&self) -> Option<u64> { None }
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]    = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]    = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]    --> src/sink.rs:857:2
[INFO] [stdout]     |
[INFO] [stdout] 857 |     default fn write_owned_bytes(&mut self, buf: Vec<u8>) -> Result {
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]     = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]     = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]    --> src/sink.rs:862:2
[INFO] [stdout]     |
[INFO] [stdout] 862 |     default fn write_owned_utf8(&mut self, buf: String) -> Result {
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]     = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]     = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]    Compiling zerocopy-derive v0.6.6
[INFO] [stderr]     Checking zerocopy v0.6.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.18
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking proptest v1.7.0
[INFO] [stdout] warning: the feature `assert_matches` has been stable since 1.96.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:84:27
[INFO] [stdout]    |
[INFO] [stdout] 84 | #![cfg_attr(test, feature(assert_matches))]
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1113:2
[INFO] [stdout]      |
[INFO] [stdout] 1113 |     default fn available(&self) -> usize {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.50s
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1117:2
[INFO] [stdout]      |
[INFO] [stdout] 1117 |     default fn request(&mut self, count: usize) -> Result<bool> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1121:2
[INFO] [stdout]      |
[INFO] [stdout] 1121 |     default fn skip(&mut self, count: usize) -> Result<usize> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1125:2
[INFO] [stdout]      |
[INFO] [stdout] 1125 |     default fn read_bytes<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a [u8]> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1135:2
[INFO] [stdout]      |
[INFO] [stdout] 1135 |     default fn read_exact_bytes<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a [u8]> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1154:2
[INFO] [stdout]      |
[INFO] [stdout] 1154 |     default fn read_aligned_bytes<'a>(&mut self, buf: &'a mut [u8], alignment: usize) -> Result<&'a [u8]> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1175:2
[INFO] [stdout]      |
[INFO] [stdout] 1175 |     default fn read_utf8<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a str> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1199:2
[INFO] [stdout]      |
[INFO] [stdout] 1199 |     default fn read_utf8_codepoint(&mut self, buf: &mut [u8; 4]) -> Result<char> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1212:2
[INFO] [stdout]      |
[INFO] [stdout] 1212 |     default fn read_ascii<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a [ascii::Char]> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1219:2
[INFO] [stdout]      |
[INFO] [stdout] 1219 |     default fn read_to_end<'a>(&mut self, buf: &'a mut alloc::vec::Vec<u8>) -> Result<&'a [u8]> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/source.rs:1224:2
[INFO] [stdout]      |
[INFO] [stdout] 1224 |     default fn read_utf8_to_end<'a>(&mut self, buf: &'a mut alloc::string::String) -> Result<&'a str> {
[INFO] [stdout]      |     ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]      = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]      = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]      = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]   --> src/source/impls.rs:50:3
[INFO] [stdout]    |
[INFO] [stdout] 50 |         default fn size_hint(&self) -> Option<u64> { None }
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]    = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]    = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]    --> src/sink.rs:857:2
[INFO] [stdout]     |
[INFO] [stdout] 857 |     default fn write_owned_bytes(&mut self, buf: Vec<u8>) -> Result {
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]     = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]     = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]    --> src/sink.rs:862:2
[INFO] [stdout]     |
[INFO] [stdout] 862 |     default fn write_owned_utf8(&mut self, buf: String) -> Result {
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-05-02; consider upgrading it if it is out of date
[INFO] [stdout]     = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]     = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "842ce3ca5a6ab98c9ba8288ef7fd5c31c3eaab9f2a9199e5803cb2f8593ad2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "842ce3ca5a6ab98c9ba8288ef7fd5c31c3eaab9f2a9199e5803cb2f8593ad2a4", kill_on_drop: false }`
[INFO] [stdout] 842ce3ca5a6ab98c9ba8288ef7fd5c31c3eaab9f2a9199e5803cb2f8593ad2a4
