[INFO] cloning repository https://github.com/compiler-errors/async-iterator-ext [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/compiler-errors/async-iterator-ext" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcompiler-errors%2Fasync-iterator-ext", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcompiler-errors%2Fasync-iterator-ext'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f8275fe6d23955e3754c60acb38dae42c5573036 [INFO] testing compiler-errors/async-iterator-ext against beta-2026-03-05 for beta-1.95-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcompiler-errors%2Fasync-iterator-ext" "/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/compiler-errors/async-iterator-ext [INFO] finished tweaking git repo https://github.com/compiler-errors/async-iterator-ext [INFO] tweaked toml for git repo https://github.com/compiler-errors/async-iterator-ext written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/compiler-errors/async-iterator-ext on toolchain beta-2026-03-05 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/compiler-errors/async-iterator-ext 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" "+beta-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: the cargo feature `edition2024` has been stabilized in the 1.85 release and is no longer necessary to be listed in the manifest [INFO] [stderr] See https://doc.rust-lang.org/beta/cargo/reference/manifest.html#the-edition-field for more information about using this feature. [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing compiler-errors/async-iterator-ext against beta-2026-03-05 for beta-1.95-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcompiler-errors%2Fasync-iterator-ext" "/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/compiler-errors/async-iterator-ext [INFO] finished tweaking git repo https://github.com/compiler-errors/async-iterator-ext [INFO] tweaked toml for git repo https://github.com/compiler-errors/async-iterator-ext written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/compiler-errors/async-iterator-ext on toolchain beta-2026-03-05 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/compiler-errors/async-iterator-ext 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" "+beta-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: the cargo feature `edition2024` has been stabilized in the 1.85 release and is no longer necessary to be listed in the manifest [INFO] [stderr] See https://doc.rust-lang.org/beta/cargo/reference/manifest.html#the-edition-field for more information about using this feature. [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [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" "+beta-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4d4bd6fb9031af1159b7c1bb212b2100d412410efa05bdc527ea4375f43ba869 [INFO] running `Command { std: "docker" "start" "-a" "4d4bd6fb9031af1159b7c1bb212b2100d412410efa05bdc527ea4375f43ba869", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4d4bd6fb9031af1159b7c1bb212b2100d412410efa05bdc527ea4375f43ba869", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d4bd6fb9031af1159b7c1bb212b2100d412410efa05bdc527ea4375f43ba869", kill_on_drop: false }` [INFO] [stdout] 4d4bd6fb9031af1159b7c1bb212b2100d412410efa05bdc527ea4375f43ba869 [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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8a9f991d1389cd94cc8b6386564b7db31a1aebfe964684c86d0637e0fc38ffc0 [INFO] running `Command { std: "docker" "start" "-a" "8a9f991d1389cd94cc8b6386564b7db31a1aebfe964684c86d0637e0fc38ffc0", kill_on_drop: false }` [INFO] [stderr] warning: the cargo feature `edition2024` has been stabilized in the 1.85 release and is no longer necessary to be listed in the manifest [INFO] [stderr] See https://doc.rust-lang.org/beta/cargo/reference/manifest.html#the-edition-field for more information about using this feature. [INFO] [stderr] Compiling async-iterator-ext v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(async_iterator, async_closure, gen_blocks, async_for_loop)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: the feature `async_closure` has been stable since `1.85.0` and no longer requires an attribute to enable [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `async` trait bounds are unstable [INFO] [stdout] --> src/lib.rs:54:12 [INFO] [stdout] | [INFO] [stdout] 54 | F: async FnMut(&Self::Item) -> bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62290 for more information [INFO] [stdout] = help: use the desugared name of the async trait, such as `AsyncFn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `async` trait bounds are unstable [INFO] [stdout] --> src/lib.rs:68:12 [INFO] [stdout] | [INFO] [stdout] 68 | F: async FnMut(Self::Item) -> Option, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62290 for more information [INFO] [stdout] = help: use the desugared name of the async trait, such as `AsyncFn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `async` trait bounds are unstable [INFO] [stdout] --> src/lib.rs:82:12 [INFO] [stdout] | [INFO] [stdout] 82 | F: async FnMut(Self::Item) -> T, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62290 for more information [INFO] [stdout] = help: use the desugared name of the async trait, such as `AsyncFn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `async` trait bounds are unstable [INFO] [stdout] --> src/lib.rs:157:12 [INFO] [stdout] | [INFO] [stdout] 157 | F: async FnMut(T, Self::Item) -> T, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62290 for more information [INFO] [stdout] = help: use the desugared name of the async trait, such as `AsyncFn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `async` trait bounds are unstable [INFO] [stdout] --> src/lib.rs:168:12 [INFO] [stdout] | [INFO] [stdout] 168 | F: async FnMut(Self::Item) -> bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62290 for more information [INFO] [stdout] = help: use the desugared name of the async trait, such as `AsyncFn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `async` trait bounds are unstable [INFO] [stdout] --> src/lib.rs:181:12 [INFO] [stdout] | [INFO] [stdout] 181 | F: async FnMut(Self::Item) -> bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62290 for more information [INFO] [stdout] = help: use the desugared name of the async trait, such as `AsyncFn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `async` trait bounds are unstable [INFO] [stdout] --> src/lib.rs:232:12 [INFO] [stdout] | [INFO] [stdout] 232 | F: async FnMut(&mut S, Self::Item) -> Option, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62290 for more information [INFO] [stdout] = help: use the desugared name of the async trait, such as `AsyncFn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `async` trait bounds are unstable [INFO] [stdout] --> src/lib.rs:248:12 [INFO] [stdout] | [INFO] [stdout] 248 | F: async FnMut(&Self::Item) -> bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62290 for more information [INFO] [stdout] = help: use the desugared name of the async trait, such as `AsyncFn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `async` trait bounds are unstable [INFO] [stdout] --> src/lib.rs:268:12 [INFO] [stdout] | [INFO] [stdout] 268 | F: async FnMut(&Self::Item) -> bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62290 for more information [INFO] [stdout] = help: use the desugared name of the async trait, such as `AsyncFn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `async` trait bounds are unstable [INFO] [stdout] --> src/lib.rs:291:12 [INFO] [stdout] | [INFO] [stdout] 291 | F: async FnMut(Self::Item), [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62290 for more information [INFO] [stdout] = help: use the desugared name of the async trait, such as `AsyncFn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `async` trait bounds are unstable [INFO] [stdout] --> src/lib.rs:440:12 [INFO] [stdout] | [INFO] [stdout] 440 | F: async FnMut(&Self::Item), [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62290 for more information [INFO] [stdout] = help: use the desugared name of the async trait, such as `AsyncFn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `async_closure` has been stable since 1.85.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:1:28 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(async_iterator, async_closure, gen_blocks, async_for_loop)] [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0554, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `async-iterator-ext` (lib) due to 12 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "8a9f991d1389cd94cc8b6386564b7db31a1aebfe964684c86d0637e0fc38ffc0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8a9f991d1389cd94cc8b6386564b7db31a1aebfe964684c86d0637e0fc38ffc0", kill_on_drop: false }` [INFO] [stdout] 8a9f991d1389cd94cc8b6386564b7db31a1aebfe964684c86d0637e0fc38ffc0