[INFO] fetching crate xstd 0.2.0...
[INFO] testing xstd-0.2.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate xstd 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate xstd 0.2.0
[INFO] finished tweaking crates.io crate xstd 0.2.0
[INFO] tweaked toml for crates.io crate xstd 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate xstd 0.2.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76c98d5092df14c14598f9fca7dc7f6d0cb27393b57d73b2d64fc1a79b2a2382
[INFO] running `Command { std: "docker" "start" "-a" "76c98d5092df14c14598f9fca7dc7f6d0cb27393b57d73b2d64fc1a79b2a2382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76c98d5092df14c14598f9fca7dc7f6d0cb27393b57d73b2d64fc1a79b2a2382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76c98d5092df14c14598f9fca7dc7f6d0cb27393b57d73b2d64fc1a79b2a2382", kill_on_drop: false }`
[INFO] [stdout] 76c98d5092df14c14598f9fca7dc7f6d0cb27393b57d73b2d64fc1a79b2a2382
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15a7ef0c0793bc5c9f3cb056ae4f6e63badf4ec1ec3314dc4c239740b037e005
[INFO] running `Command { std: "docker" "start" "-a" "15a7ef0c0793bc5c9f3cb056ae4f6e63badf4ec1ec3314dc4c239740b037e005", kill_on_drop: false }`
[INFO] [stderr]    Compiling xstd v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/vec.rs:21:14
[INFO] [stdout]    |
[INFO] [stdout] 21 |             .intersperse(&"\n")
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/vec.rs:45:14
[INFO] [stdout]    |
[INFO] [stdout] 45 |             .intersperse(&" ")
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a trait
[INFO] [stdout]  --> src/iter/intersperse_iter.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait IntersperseIterAdapter: Iterator {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #! [deny(missing_docs)]
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]  --> src/iter/intersperse_iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | /     fn intersperse(self, elem: Self::Item) -> IntersperseIter<Self>
[INFO] [stdout] 3 | |     where
[INFO] [stdout] 4 | |         Self: Sized,
[INFO] [stdout] 5 | |         Self::Item: Clone,
[INFO] [stdout]   | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a trait
[INFO] [stdout]  --> src/iter/memento_iter.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait MementoIterAdapter: Iterator {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]  --> src/iter/memento_iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | /     fn memento(self) -> MementoIter<Self>
[INFO] [stdout] 3 | |     where
[INFO] [stdout] 4 | |         Self: Sized,
[INFO] [stdout] 5 | |         Self::Item: Clone,
[INFO] [stdout]   | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]   --> src/vec.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn unlines(&self) -> String;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]   --> src/vec.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn unwords(&self) -> String;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]   --> src/dynamic.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn is_instance_of<T: ?Sized + Any>(&self) -> bool {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "15a7ef0c0793bc5c9f3cb056ae4f6e63badf4ec1ec3314dc4c239740b037e005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15a7ef0c0793bc5c9f3cb056ae4f6e63badf4ec1ec3314dc4c239740b037e005", kill_on_drop: false }`
[INFO] [stdout] 15a7ef0c0793bc5c9f3cb056ae4f6e63badf4ec1ec3314dc4c239740b037e005
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 898716dfe0a175a9989829bd3f47d1f46d3dfed8f814435dfb4f5318a65fbad0
[INFO] running `Command { std: "docker" "start" "-a" "898716dfe0a175a9989829bd3f47d1f46d3dfed8f814435dfb4f5318a65fbad0", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/vec.rs:21:14
[INFO] [stdout]    |
[INFO] [stdout] 21 |             .intersperse(&"\n")
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/vec.rs:45:14
[INFO] [stdout]    |
[INFO] [stdout] 45 |             .intersperse(&" ")
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a trait
[INFO] [stdout]  --> src/iter/intersperse_iter.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait IntersperseIterAdapter: Iterator {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #! [deny(missing_docs)]
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]  --> src/iter/intersperse_iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | /     fn intersperse(self, elem: Self::Item) -> IntersperseIter<Self>
[INFO] [stdout] 3 | |     where
[INFO] [stdout] 4 | |         Self: Sized,
[INFO] [stdout] 5 | |         Self::Item: Clone,
[INFO] [stdout]   | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a trait
[INFO] [stdout]  --> src/iter/memento_iter.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait MementoIterAdapter: Iterator {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]  --> src/iter/memento_iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | /     fn memento(self) -> MementoIter<Self>
[INFO] [stdout] 3 | |     where
[INFO] [stdout] 4 | |         Self: Sized,
[INFO] [stdout] 5 | |         Self::Item: Clone,
[INFO] [stdout]   | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]   --> src/vec.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn unlines(&self) -> String;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]   --> src/vec.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn unwords(&self) -> String;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]   --> src/dynamic.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn is_instance_of<T: ?Sized + Any>(&self) -> bool {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling xstd v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/iter/intersperse_iter.rs:75:50
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut iter = std::iter::empty::<i32>().intersperse(100);
[INFO] [stdout]    |                                                  ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/iter/intersperse_iter.rs:81:43
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let mut iter = std::iter::once(2).intersperse(100);
[INFO] [stdout]    |                                           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/iter/intersperse_iter.rs:88:28
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let iter = (1..=3).intersperse(100);
[INFO] [stdout]    |                            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/vec.rs:21:14
[INFO] [stdout]    |
[INFO] [stdout] 21 |             .intersperse(&"\n")
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/vec.rs:45:14
[INFO] [stdout]    |
[INFO] [stdout] 45 |             .intersperse(&" ")
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a trait
[INFO] [stdout]  --> src/iter/intersperse_iter.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait IntersperseIterAdapter: Iterator {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #! [deny(missing_docs)]
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]  --> src/iter/intersperse_iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | /     fn intersperse(self, elem: Self::Item) -> IntersperseIter<Self>
[INFO] [stdout] 3 | |     where
[INFO] [stdout] 4 | |         Self: Sized,
[INFO] [stdout] 5 | |         Self::Item: Clone,
[INFO] [stdout]   | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a trait
[INFO] [stdout]  --> src/iter/memento_iter.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait MementoIterAdapter: Iterator {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]  --> src/iter/memento_iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | /     fn memento(self) -> MementoIter<Self>
[INFO] [stdout] 3 | |     where
[INFO] [stdout] 4 | |         Self: Sized,
[INFO] [stdout] 5 | |         Self::Item: Clone,
[INFO] [stdout]   | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]   --> src/vec.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn unlines(&self) -> String;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]   --> src/vec.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn unwords(&self) -> String;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]   --> src/dynamic.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn is_instance_of<T: ?Sized + Any>(&self) -> bool {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.03s
[INFO] running `Command { std: "docker" "inspect" "898716dfe0a175a9989829bd3f47d1f46d3dfed8f814435dfb4f5318a65fbad0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "898716dfe0a175a9989829bd3f47d1f46d3dfed8f814435dfb4f5318a65fbad0", kill_on_drop: false }`
[INFO] [stdout] 898716dfe0a175a9989829bd3f47d1f46d3dfed8f814435dfb4f5318a65fbad0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 57734811d4f83f40e29658c2382013c5ee5a8701f744fab89e68d6cd167a7ca6
[INFO] running `Command { std: "docker" "start" "-a" "57734811d4f83f40e29658c2382013c5ee5a8701f744fab89e68d6cd167a7ca6", kill_on_drop: false }`
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/vec.rs:21:14
[INFO] [stderr]    |
[INFO] [stderr] 21 |             .intersperse(&"\n")
[INFO] [stderr]    |              ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stderr]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/vec.rs:45:14
[INFO] [stderr]    |
[INFO] [stderr] 45 |             .intersperse(&" ")
[INFO] [stderr]    |              ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for a trait
[INFO] [stderr]  --> src/iter/intersperse_iter.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub trait IntersperseIterAdapter: Iterator {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]  --> src/lib.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | #! [deny(missing_docs)]
[INFO] [stderr]   |          ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for a method
[INFO] [stderr]  --> src/iter/intersperse_iter.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | /     fn intersperse(self, elem: Self::Item) -> IntersperseIter<Self>
[INFO] [stderr] 3 | |     where
[INFO] [stderr] 4 | |         Self: Sized,
[INFO] [stderr] 5 | |         Self::Item: Clone,
[INFO] [stderr]   | |__________________________^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for a trait
[INFO] [stderr]  --> src/iter/memento_iter.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub trait MementoIterAdapter: Iterator {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for a method
[INFO] [stderr]  --> src/iter/memento_iter.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | /     fn memento(self) -> MementoIter<Self>
[INFO] [stderr] 3 | |     where
[INFO] [stderr] 4 | |         Self: Sized,
[INFO] [stderr] 5 | |         Self::Item: Clone,
[INFO] [stderr]   | |__________________________^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for a method
[INFO] [stderr]   --> src/vec.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn unlines(&self) -> String;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for a method
[INFO] [stderr]   --> src/vec.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn unwords(&self) -> String;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for a method
[INFO] [stderr]   --> src/dynamic.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn is_instance_of<T: ?Sized + Any>(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `xstd` (lib) generated 9 warnings
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/iter/intersperse_iter.rs:75:50
[INFO] [stderr]    |
[INFO] [stderr] 75 |         let mut iter = std::iter::empty::<i32>().intersperse(100);
[INFO] [stderr]    |                                                  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stderr]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/iter/intersperse_iter.rs:81:43
[INFO] [stderr]    |
[INFO] [stderr] 81 |         let mut iter = std::iter::once(2).intersperse(100);
[INFO] [stderr]    |                                           ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/iter/intersperse_iter.rs:88:28
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let iter = (1..=3).intersperse(100);
[INFO] [stderr]    |                            ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/vec.rs:21:14
[INFO] [stderr]    |
[INFO] [stderr] 21 |             .intersperse(&"\n")
[INFO] [stderr]    |              ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `intersperse_iter::IntersperseIterAdapter::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: `xstd` (lib test) generated 12 warnings (8 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/xstd-95298aeeb5bcee32)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test iter::intersperse_iter::tests::intersperse_between_elements ... ok
[INFO] [stdout] test iter::intersperse_iter::tests::keep_empty_iter_empty ... ok
[INFO] [stdout] test iter::memento_iter::tests::a ... ok
[INFO] [stdout] test iter::intersperse_iter::tests::keep_singleton_iter_singleton ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests xstd
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/dynamic.rs - dynamic::IsInstanceOf (line 7) ... ok
[INFO] [stdout] test src/lib.rs - prelude (line 23) ... ok
[INFO] [stdout] test src/iter/memento_iter.rs - iter::memento_iter::MementoIter (line 17) ... ok
[INFO] [stdout] test src/macros.rs - macros::ifte (line 4) ... ok
[INFO] [stdout] test src/vec.rs - vec::Unlines (line 7) ... ok
[INFO] [stdout] test src/vec.rs - vec::Unwords (line 32) ... ok
[INFO] [stdout] test src/iter/intersperse_iter.rs - iter::intersperse_iter::IntersperseIter (line 16) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "57734811d4f83f40e29658c2382013c5ee5a8701f744fab89e68d6cd167a7ca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57734811d4f83f40e29658c2382013c5ee5a8701f744fab89e68d6cd167a7ca6", kill_on_drop: false }`
[INFO] [stdout] 57734811d4f83f40e29658c2382013c5ee5a8701f744fab89e68d6cd167a7ca6