[INFO] fetching crate futuredsp 0.0.4...
[INFO] testing futuredsp-0.0.4 against beta-2022-08-09 for beta-1.64-2
[INFO] extracting crate futuredsp 0.0.4 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate futuredsp 0.0.4 on toolchain beta-2022-08-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-08-09" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futuredsp 0.0.4
[INFO] finished tweaking crates.io crate futuredsp 0.0.4
[INFO] tweaked toml for crates.io crate futuredsp 0.0.4 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-08-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-08-09" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-08-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80433b1ed75c3114003dbec4c3b498d875a5f772c475c30913122cb0164e6dec
[INFO] running `Command { std: "docker" "start" "-a" "80433b1ed75c3114003dbec4c3b498d875a5f772c475c30913122cb0164e6dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80433b1ed75c3114003dbec4c3b498d875a5f772c475c30913122cb0164e6dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80433b1ed75c3114003dbec4c3b498d875a5f772c475c30913122cb0164e6dec", kill_on_drop: false }`
[INFO] [stdout] 80433b1ed75c3114003dbec4c3b498d875a5f772c475c30913122cb0164e6dec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-08-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 439b72e4985e637d7dc16a33feccbbf04a4dc0f1b59eb419beebd1232f15b500
[INFO] running `Command { std: "docker" "start" "-a" "439b72e4985e637d7dc16a33feccbbf04a4dc0f1b59eb419beebd1232f15b500", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.13
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling futuredsp v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num-complex v0.4.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> 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] running `Command { std: "docker" "inspect" "439b72e4985e637d7dc16a33feccbbf04a4dc0f1b59eb419beebd1232f15b500", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "439b72e4985e637d7dc16a33feccbbf04a4dc0f1b59eb419beebd1232f15b500", kill_on_drop: false }`
[INFO] [stdout] 439b72e4985e637d7dc16a33feccbbf04a4dc0f1b59eb419beebd1232f15b500