[INFO] fetching crate futuresdr 0.0.27...
[INFO] documenting futuresdr-0.0.27 against beta-2023-01-01 for beta-1.67-rustdoc-3
[INFO] extracting crate futuresdr 0.0.27 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate futuresdr 0.0.27 on toolchain beta-2023-01-01
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-01-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futuresdr 0.0.27
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate futuresdr 0.0.27
[INFO] tweaked toml for crates.io crate futuresdr 0.0.27 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate futuresdr 0.0.27 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-2023-01-01" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:9042d5c95763f71f7b0904716b98ccadf9fc47b0f382ee962aaaed2ac70c9b8d" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 878fd373107753013ef43721213a5da874766459821c119994d10e9a1db42a28
[INFO] running `Command { std: "docker" "start" "-a" "878fd373107753013ef43721213a5da874766459821c119994d10e9a1db42a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "878fd373107753013ef43721213a5da874766459821c119994d10e9a1db42a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "878fd373107753013ef43721213a5da874766459821c119994d10e9a1db42a28", kill_on_drop: false }`
[INFO] [stdout] 878fd373107753013ef43721213a5da874766459821c119994d10e9a1db42a28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:9042d5c95763f71f7b0904716b98ccadf9fc47b0f382ee962aaaed2ac70c9b8d" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-01-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9496d8bba01acade57a83c3fe1980b242ab61d64a971ff72d0d28277103d4688
[INFO] running `Command { std: "docker" "start" "-a" "9496d8bba01acade57a83c3fe1980b242ab61d64a971ff72d0d28277103d4688", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking futures-io v0.3.24
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling thiserror v1.0.35
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]    Compiling generic-array v0.14.6
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[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling tokio v1.21.1
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[INFO] [stderr]     Checking mio v0.8.4
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[INFO] [stderr]    Compiling ahash v0.7.6
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[INFO] [stderr]    Compiling serde_json v1.0.85
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[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]    Compiling lock_api v0.4.8
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[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling futuredsp v0.0.6
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]    Compiling async-net v1.7.0
[INFO] [stderr]     Checking tokio-util v0.7.4
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]     Checking http-range-header v0.3.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking strength_reduce v0.2.3
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking transpose v0.2.1
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking rust-ini v0.18.0
[INFO] [stderr]     Checking primal-check v0.3.2
[INFO] [stderr]     Checking async-lock v2.5.0
[INFO] [stderr]    Compiling futuresdr v0.0.27 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking pathdiff v0.2.1
[INFO] [stderr]     Checking sync_wrapper v0.1.1
[INFO] [stderr]     Checking dyn-clone v1.0.9
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking matchit v0.5.0
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking core_affinity v0.5.10
[INFO] [stderr]     Checking rustfft v6.0.1
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/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` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9496d8bba01acade57a83c3fe1980b242ab61d64a971ff72d0d28277103d4688", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9496d8bba01acade57a83c3fe1980b242ab61d64a971ff72d0d28277103d4688", kill_on_drop: false }`
[INFO] [stdout] 9496d8bba01acade57a83c3fe1980b242ab61d64a971ff72d0d28277103d4688