[INFO] fetching crate futuresdr 0.0.38...
[INFO] documenting futuresdr-0.0.38 against beta-2025-09-21 for beta-rustdoc-1.91-2
[INFO] extracting crate futuresdr 0.0.38 into /workspace/builds/worker-1-tc2/source
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate futuresdr 0.0.38
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate futuresdr 0.0.38
[INFO] tweaked toml for crates.io crate futuresdr 0.0.38 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate futuresdr 0.0.38 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] crate crates.io crate futuresdr 0.0.38 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] da5f17f1c49fda1971567fc0ccfaf35dc6d69472192b7ee6e8a5ff75d410c4d5
[INFO] running `Command { std: "docker" "start" "-a" "da5f17f1c49fda1971567fc0ccfaf35dc6d69472192b7ee6e8a5ff75d410c4d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da5f17f1c49fda1971567fc0ccfaf35dc6d69472192b7ee6e8a5ff75d410c4d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da5f17f1c49fda1971567fc0ccfaf35dc6d69472192b7ee6e8a5ff75d410c4d5", kill_on_drop: false }`
[INFO] [stdout] da5f17f1c49fda1971567fc0ccfaf35dc6d69472192b7ee6e8a5ff75d410c4d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] daeef99030417465716a5af83fc5a8296edcdf33f6081ef32ab40ad914e2e127
[INFO] running `Command { std: "docker" "start" "-a" "daeef99030417465716a5af83fc5a8296edcdf33f6081ef32ab40ad914e2e127", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking futures-lite v2.6.0
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]     Checking hashbrown v0.15.2
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking linux-raw-sys v0.4.15
[INFO] [stderr]     Checking async-channel v2.3.1
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking winnow v0.7.7
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]    Compiling futuredsp v0.0.7
[INFO] [stderr]    Compiling rustfft v6.3.0
[INFO] [stderr]     Checking strength_reduce v0.2.4
[INFO] [stderr]     Checking trim-in-place v0.1.7
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking primal-check v0.3.4
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling futuresdr v0.0.38 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking http-range-header v0.4.2
[INFO] [stderr]     Checking rand v0.9.1
[INFO] [stderr]     Checking transpose v0.2.3
[INFO] [stderr]    Compiling const-random-macro v0.1.16
[INFO] [stderr]     Checking core_affinity v0.8.3
[INFO] [stderr]     Checking dirs v6.0.0
[INFO] [stderr]     Checking spin v0.10.0
[INFO] [stderr]     Checking hashlink v0.10.0
[INFO] [stderr]     Checking const-random v0.1.18
[INFO] [stderr]     Checking dlv-list v0.5.2
[INFO] [stderr]     Checking yaml-rust2 v0.10.1
[INFO] [stderr]     Checking ordered-multimap v0.7.3
[INFO] [stderr]     Checking blocking v1.6.1
[INFO] [stderr]     Checking async-executor v1.13.2
[INFO] [stderr]     Checking async-fs v2.1.2
[INFO] [stderr]     Checking rust-ini v0.21.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling async-trait v0.1.88
[INFO] [stderr]    Compiling futuresdr-macros v0.0.7
[INFO] [stderr]     Checking tokio v1.44.2
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking thiserror v2.0.12
[INFO] [stderr]    Compiling pest v2.8.0
[INFO] [stderr]     Checking tungstenite v0.26.2
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking axum-core v0.5.2
[INFO] [stderr]     Checking tracing-subscriber v0.3.19
[INFO] [stderr]    Compiling pest_meta v2.8.0
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]    Compiling pest_generator v2.8.0
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking async-tungstenite v0.29.1
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking vmcircbuffer v0.0.10
[INFO] [stderr]    Compiling pest_derive v2.8.0
[INFO] [stderr]     Checking hyper v1.6.0
[INFO] [stderr]     Checking tokio-util v0.7.15
[INFO] [stderr]     Checking tower v0.5.2
[INFO] [stderr]     Checking hyper-util v0.1.11
[INFO] [stderr]     Checking bitflags v2.9.0
[INFO] [stderr]     Checking toml_datetime v0.6.9
[INFO] [stderr]     Checking serde_spanned v0.6.8
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking json5 v0.4.1
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde_path_to_error v0.1.17
[INFO] [stderr]     Checking toml_edit v0.22.25
[INFO] [stderr]     Checking ron v0.8.1
[INFO] [stderr]     Checking tower-http v0.6.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futuredsp-0.0.7/src/lib.rs:5:35
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![cfg_attr(not(RUSTC_IS_STABLE), feature(core_intrinsics))]
[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 `futuredsp` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "daeef99030417465716a5af83fc5a8296edcdf33f6081ef32ab40ad914e2e127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daeef99030417465716a5af83fc5a8296edcdf33f6081ef32ab40ad914e2e127", kill_on_drop: false }`
[INFO] [stdout] daeef99030417465716a5af83fc5a8296edcdf33f6081ef32ab40ad914e2e127