[INFO] fetching crate ector 0.4.0...
[INFO] testing ector-0.4.0 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate ector 0.4.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate ector 0.4.0 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ector 0.4.0
[INFO] finished tweaking crates.io crate ector 0.4.0
[INFO] tweaked toml for crates.io crate ector 0.4.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate ector 0.4.0 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-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded embassy-time v0.1.1
[INFO] [stderr]   Downloaded heapless v0.7.13
[INFO] [stderr]   Downloaded embedded-hal-async v0.2.0-alpha.1
[INFO] [stderr]   Downloaded embassy-sync v0.2.0
[INFO] [stderr]   Downloaded critical-section v1.1.1
[INFO] [stderr]   Downloaded embedded-io v0.4.0
[INFO] [stderr]   Downloaded embassy-executor v0.2.0
[INFO] [stderr]   Downloaded defmt-macros v0.3.2
[INFO] [stderr]   Downloaded critical-section v0.2.7
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.8
[INFO] [stderr]   Downloaded riscv v0.7.0
[INFO] [stderr]   Downloaded embedded-hal v1.0.0-alpha.10
[INFO] [stderr]   Downloaded cortex-m v0.7.5
[INFO] [stderr]   Downloaded bare-metal v1.0.0
[INFO] [stderr]   Downloaded bit_field v0.10.1
[INFO] [stderr]   Downloaded riscv-target v0.1.2
[INFO] [stderr]   Downloaded atomic-polyfill v1.0.1
[INFO] [stderr]   Downloaded static_cell v1.0.0
[INFO] [stderr]   Downloaded defmt v0.3.2
[INFO] [stderr]   Downloaded ector-macros v0.4.0
[INFO] [stderr]   Downloaded embassy-macros v0.2.0
[INFO] [stderr]   Downloaded spin v0.9.3
[INFO] [stderr]   Downloaded semver v1.0.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 925c15e9d8cac680c6bfa797384bf8ec424bd0b4a6788dcbba2e6fae5c912bfd
[INFO] running `Command { std: "docker" "start" "-a" "925c15e9d8cac680c6bfa797384bf8ec424bd0b4a6788dcbba2e6fae5c912bfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "925c15e9d8cac680c6bfa797384bf8ec424bd0b4a6788dcbba2e6fae5c912bfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "925c15e9d8cac680c6bfa797384bf8ec424bd0b4a6788dcbba2e6fae5c912bfd", kill_on_drop: false }`
[INFO] [stdout] 925c15e9d8cac680c6bfa797384bf8ec424bd0b4a6788dcbba2e6fae5c912bfd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbe0ea03511dc8b0a7f708d671df0d6c98f4834284077bd01830a1cde57411f6
[INFO] running `Command { std: "docker" "start" "-a" "bbe0ea03511dc8b0a7f708d671df0d6c98f4834284077bd01830a1cde57411f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling semver v1.0.10
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling atomic-polyfill v1.0.1
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling critical-section v1.1.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling embassy-executor v0.2.0
[INFO] [stderr]    Compiling embassy-sync v0.2.0
[INFO] [stderr]    Compiling embedded-io v0.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling futures-io v0.3.21
[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/embedded-io-0.4.0/src/lib.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(feature = "async", feature(async_fn_in_trait, impl_trait_projections))]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling hash32 v0.2.1
[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 `embedded-io` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "bbe0ea03511dc8b0a7f708d671df0d6c98f4834284077bd01830a1cde57411f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbe0ea03511dc8b0a7f708d671df0d6c98f4834284077bd01830a1cde57411f6", kill_on_drop: false }`
[INFO] [stdout] bbe0ea03511dc8b0a7f708d671df0d6c98f4834284077bd01830a1cde57411f6
