[INFO] fetching crate starry-api 0.1.0...
[INFO] testing starry-api-0.1.0 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate starry-api 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate starry-api 0.1.0
[INFO] finished tweaking crates.io crate starry-api 0.1.0
[INFO] tweaked toml for crates.io crate starry-api 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate starry-api 0.1.0 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate starry-api 0.1.0 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ba0c8517ee499fd6aa88d59356688ef6ee0ef391ffa6a26e611f29cf5b1fdd9
[INFO] running `Command { std: "docker" "start" "-a" "3ba0c8517ee499fd6aa88d59356688ef6ee0ef391ffa6a26e611f29cf5b1fdd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ba0c8517ee499fd6aa88d59356688ef6ee0ef391ffa6a26e611f29cf5b1fdd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ba0c8517ee499fd6aa88d59356688ef6ee0ef391ffa6a26e611f29cf5b1fdd9", kill_on_drop: false }`
[INFO] [stdout] 3ba0c8517ee499fd6aa88d59356688ef6ee0ef391ffa6a26e611f29cf5b1fdd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb06fd97bfd7e44d55d3dea895bb1d269f851b8bd4bb2c8bff0999c739d08c63
[INFO] running `Command { std: "docker" "start" "-a" "eb06fd97bfd7e44d55d3dea895bb1d269f851b8bd4bb2c8bff0999c739d08c63", kill_on_drop: false }`
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[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/buffered/bufreader/mod.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use core::{fmt, io::BorrowedCursor};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/buffered/bufreader/buffer.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::{cmp, io::BorrowedBuf, mem::MaybeUninit};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/iobuf/ext.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 |     io::{BorrowedBuf, BorrowedCursor},
[INFO] [stdout]   |          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/iobuf/ext.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 |     io::{BorrowedBuf, BorrowedCursor},
[INFO] [stdout]   |                       ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/iobuf/impls.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::io::BorrowedCursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/read/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::io::BorrowedCursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/read/mod.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     use core::io::BorrowedBuf;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]    = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/read/impls.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::{cmp, io::BorrowedCursor};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/utils/chain.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::io::BorrowedCursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/utils/copy.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::{io::BorrowedBuf, mem::MaybeUninit};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/utils/cursor.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::{cmp, io::BorrowedCursor};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/utils/empty.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::{fmt, io::BorrowedCursor};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/utils/repeat.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::{fmt, io::BorrowedCursor};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/utils/take.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{BorrowedBuf, BorrowedCursor},
[INFO] [stdout]   |          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/utils/take.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{BorrowedBuf, BorrowedCursor},
[INFO] [stdout]   |                       ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `core_io`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/axio-0.3.0-pre.1/src/write/impls.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::{cmp, fmt, io::BorrowedCursor, mem};
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #154046 <https://github.com/rust-lang/rust/issues/154046> for more information
[INFO] [stdout]   = help: add `#![feature(core_io)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling axhal v0.2.2-preview.5
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `axio` (lib) due to 16 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "eb06fd97bfd7e44d55d3dea895bb1d269f851b8bd4bb2c8bff0999c739d08c63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb06fd97bfd7e44d55d3dea895bb1d269f851b8bd4bb2c8bff0999c739d08c63", kill_on_drop: false }`
[INFO] [stdout] eb06fd97bfd7e44d55d3dea895bb1d269f851b8bd4bb2c8bff0999c739d08c63
