[INFO] fetching crate futuresdr 0.0.35...
[INFO] documenting futuresdr-0.0.35 against beta-2023-07-23 for beta-1.72-rustdoc-1
[INFO] extracting crate futuresdr 0.0.35 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate futuresdr 0.0.35 on toolchain beta-2023-07-23
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-07-23" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futuresdr 0.0.35
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate futuresdr 0.0.35
[INFO] tweaked toml for crates.io crate futuresdr 0.0.35 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate futuresdr 0.0.35 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-2023-07-23" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-07-23" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58ad6df565a26b823b99c90b3b8fdc98fe2fa370540f7518d7b6b69bfe7ae680
[INFO] running `Command { std: "docker" "start" "-a" "58ad6df565a26b823b99c90b3b8fdc98fe2fa370540f7518d7b6b69bfe7ae680", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58ad6df565a26b823b99c90b3b8fdc98fe2fa370540f7518d7b6b69bfe7ae680", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58ad6df565a26b823b99c90b3b8fdc98fe2fa370540f7518d7b6b69bfe7ae680", kill_on_drop: false }`
[INFO] [stdout] 58ad6df565a26b823b99c90b3b8fdc98fe2fa370540f7518d7b6b69bfe7ae680
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-07-23" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5dd91284239f1d3365f51aea266fcf7eaa5ba9bde30dbe761132e8bdcc2c74f4
[INFO] running `Command { std: "docker" "start" "-a" "5dd91284239f1d3365f51aea266fcf7eaa5ba9bde30dbe761132e8bdcc2c74f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.64
[INFO] [stderr]    Compiling unicode-ident v1.0.10
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling thiserror v1.0.43
[INFO] [stderr]     Checking itoa v1.0.8
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rustversion v1.0.13
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking futures-channel v0.3.28
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling async-trait v0.1.71
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking mime v0.3.17
[INFO] [stderr]    Compiling serde_json v1.0.102
[INFO] [stderr]     Checking tower-layer v0.3.2
[INFO] [stderr]     Checking ryu v1.0.14
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking io-lifetimes v1.0.11
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking dlv-list v0.3.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking try-lock v0.2.4
[INFO] [stderr]     Checking sha1 v0.10.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]     Checking rustix v0.37.23
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking polling v2.8.0
[INFO] [stderr]    Compiling rustfft v6.1.0
[INFO] [stderr]    Compiling async-net v1.7.0
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]     Checking strength_reduce v0.2.4
[INFO] [stderr]    Compiling futuredsp v0.0.6
[INFO] [stderr]    Compiling syn v2.0.25
[INFO] [stderr]     Checking ordered-multimap v0.4.3
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]    Compiling futuresdr v0.0.35 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lock_api v0.4.10
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking http-range-header v0.3.0
[INFO] [stderr]     Checking sync_wrapper v0.1.2
[INFO] [stderr]     Checking matchit v0.7.0
[INFO] [stderr]     Checking dyn-clone v1.0.11
[INFO] [stderr]     Checking rust-ini v0.18.0
[INFO] [stderr]     Checking pathdiff v0.2.1
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]    Compiling axum-core v0.3.4
[INFO] [stderr]    Compiling axum v0.6.18
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking core_affinity v0.8.0
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking transpose v0.2.2
[INFO] [stderr]     Checking primal-check v0.3.3
[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-6f17d22bba15001f/futuredsp-0.0.6/src/lib.rs:2:43
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(not(RUSTC_IS_STABLE), feature(core_intrinsics))]
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5dd91284239f1d3365f51aea266fcf7eaa5ba9bde30dbe761132e8bdcc2c74f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dd91284239f1d3365f51aea266fcf7eaa5ba9bde30dbe761132e8bdcc2c74f4", kill_on_drop: false }`
[INFO] [stdout] 5dd91284239f1d3365f51aea266fcf7eaa5ba9bde30dbe761132e8bdcc2c74f4