[INFO] fetching crate v_utils 2.6.12...
[INFO] testing v_utils-2.6.12 against 1.90.0 for beta-1.91-3
[INFO] extracting crate v_utils 2.6.12 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate v_utils 2.6.12
[INFO] finished tweaking crates.io crate v_utils 2.6.12
[INFO] tweaked toml for crates.io crate v_utils 2.6.12 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate v_utils 2.6.12 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate v_utils 2.6.12 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded toml_writer v1.0.3
[INFO] [stderr]   Downloaded indenter v0.3.4
[INFO] [stderr]   Downloaded trybuild v1.0.111
[INFO] [stderr]   Downloaded toml v0.9.7
[INFO] [stderr]   Downloaded async-sse v5.1.0
[INFO] [stderr]   Downloaded convert_case v0.7.1
[INFO] [stderr]   Downloaded serde v1.0.227
[INFO] [stderr]   Downloaded infer v0.2.3
[INFO] [stderr]   Downloaded serde_qs v0.8.5
[INFO] [stderr]   Downloaded config v0.15.17
[INFO] [stderr]   Downloaded const_format v0.2.34
[INFO] [stderr]   Downloaded hyper-util v0.1.17
[INFO] [stderr]   Downloaded cc v1.2.37
[INFO] [stderr]   Downloaded rustls-webpki v0.103.6
[INFO] [stderr]   Downloaded console-subscriber v0.4.1
[INFO] [stderr]   Downloaded rand_distr v0.5.1
[INFO] [stderr]   Downloaded quinn v0.11.9
[INFO] [stderr]   Downloaded insta v1.43.2
[INFO] [stderr]   Downloaded dissimilar v1.0.10
[INFO] [stderr]   Downloaded erased-serde v0.4.8
[INFO] [stderr]   Downloaded quinn-proto v0.11.13
[INFO] [stderr]   Downloaded yaml-rust2 v0.10.4
[INFO] [stderr]   Downloaded hdrhistogram v7.5.4
[INFO] [stderr]   Downloaded console-api v0.8.1
[INFO] [stderr]   Downloaded const_format_proc_macros v0.2.34
[INFO] [stderr]   Downloaded quinn-udp v0.5.14
[INFO] [stderr]   Downloaded find-msvc-tools v0.1.1
[INFO] [stderr]   Downloaded tokio-rustls v0.26.3
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.53
[INFO] [stderr]   Downloaded strum_macros v0.27.2
[INFO] [stderr]   Downloaded strum v0.27.2
[INFO] [stderr]   Downloaded serde_core v1.0.227
[INFO] [stderr]   Downloaded serde_derive v1.0.227
[INFO] [stderr]   Downloaded derive-new v0.7.0
[INFO] [stderr]   Downloaded macro-attr v0.2.0
[INFO] [stderr]   Downloaded serde_spanned v1.0.2
[INFO] [stderr]   Downloaded rust-ini v0.21.3
[INFO] [stderr]   Downloaded typeid v1.0.3
[INFO] [stderr]   Downloaded serde-untagged v0.1.9
[INFO] [stderr]   Downloaded function_name-proc-macro v0.3.0
[INFO] [stderr]   Downloaded function_name v0.3.0
[INFO] [stderr]   Downloaded web-sys v0.3.80
[INFO] [stderr]   Downloaded target-triple v0.1.4
[INFO] [stderr]   Downloaded v_utils_macros v2.2.12
[INFO] [stderr]   Downloaded xdg v3.0.0
[INFO] [stderr]   Downloaded http-types v2.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fa06b06fb88a62f8ca1c1733c9417ca0bec7747d0bba5696a3d958af54bd29b
[INFO] running `Command { std: "docker" "start" "-a" "9fa06b06fb88a62f8ca1c1733c9417ca0bec7747d0bba5696a3d958af54bd29b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fa06b06fb88a62f8ca1c1733c9417ca0bec7747d0bba5696a3d958af54bd29b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fa06b06fb88a62f8ca1c1733c9417ca0bec7747d0bba5696a3d958af54bd29b", kill_on_drop: false }`
[INFO] [stdout] 9fa06b06fb88a62f8ca1c1733c9417ca0bec7747d0bba5696a3d958af54bd29b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3c4953f31ce6655673492dfbf74fc8b46f756bbad097e80186c9d58c90c9497
[INFO] running `Command { std: "docker" "start" "-a" "e3c4953f31ce6655673492dfbf74fc8b46f756bbad097e80186c9d58c90c9497", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling serde_core v1.0.227
[INFO] [stderr]    Compiling serde v1.0.227
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling nu-ansi-term v0.50.1
[INFO] [stderr]    Compiling indenter v0.3.4
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling function_name-proc-macro v0.3.0
[INFO] [stderr]    Compiling xdg v3.0.0
[INFO] [stderr]    Compiling macro-attr v0.2.0
[INFO] [stderr]    Compiling convert_case v0.7.1
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling function_name v0.3.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]    Compiling dirs-sys v0.5.0
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling dirs v6.0.0
[INFO] [stderr]    Compiling const_format v0.2.34
[INFO] [stderr]    Compiling matchers v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.227
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling derive-new v0.7.0
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling strum v0.27.2
[INFO] [stderr]    Compiling derive_more v2.0.1
[INFO] [stderr]    Compiling tracing-serde v0.2.0
[INFO] [stderr]    Compiling jiff v0.2.15
[INFO] [stderr]    Compiling v_utils_macros v2.2.12
[INFO] [stderr]    Compiling tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling tracing-error v0.2.1
[INFO] [stderr]    Compiling v_utils v2.6.12 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(stmt_expr_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `v_utils` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e3c4953f31ce6655673492dfbf74fc8b46f756bbad097e80186c9d58c90c9497", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3c4953f31ce6655673492dfbf74fc8b46f756bbad097e80186c9d58c90c9497", kill_on_drop: false }`
[INFO] [stdout] e3c4953f31ce6655673492dfbf74fc8b46f756bbad097e80186c9d58c90c9497
