[INFO] fetching crate embedded-nal-coap 0.1.0-alpha.1...
[INFO] testing embedded-nal-coap-0.1.0-alpha.1 against 1.76.0 for beta-1.77-1
[INFO] extracting crate embedded-nal-coap 0.1.0-alpha.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate embedded-nal-coap 0.1.0-alpha.1 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate embedded-nal-coap 0.1.0-alpha.1
[INFO] finished tweaking crates.io crate embedded-nal-coap 0.1.0-alpha.1
[INFO] tweaked toml for crates.io crate embedded-nal-coap 0.1.0-alpha.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded embassy-futures v0.1.1
[INFO] [stderr]   Downloaded embedded-nal v0.7.0
[INFO] [stderr]   Downloaded embedded-io v0.4.0
[INFO] [stderr]   Downloaded embedded-io v0.6.1
[INFO] [stderr]   Downloaded coap-handler v0.1.6
[INFO] [stderr]   Downloaded embedded-nal-async v0.6.0
[INFO] [stderr]   Downloaded coap-request v0.1.0
[INFO] [stderr]   Downloaded embassy-sync v0.3.0
[INFO] [stderr]   Downloaded embedded-io-async v0.6.1
[INFO] [stderr]   Downloaded windowed-infinity v0.1.4
[INFO] [stderr]   Downloaded coap-message-utils v0.2.2
[INFO] [stderr]   Downloaded coap-numbers v0.2.3
[INFO] [stderr]   Downloaded coap-message v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d16d3751dc8ebe5db7963bd7f40510a88cbeb79f9709c09958c0a0dc00d771dd
[INFO] running `Command { std: "docker" "start" "-a" "d16d3751dc8ebe5db7963bd7f40510a88cbeb79f9709c09958c0a0dc00d771dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d16d3751dc8ebe5db7963bd7f40510a88cbeb79f9709c09958c0a0dc00d771dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d16d3751dc8ebe5db7963bd7f40510a88cbeb79f9709c09958c0a0dc00d771dd", kill_on_drop: false }`
[INFO] [stdout] d16d3751dc8ebe5db7963bd7f40510a88cbeb79f9709c09958c0a0dc00d771dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73b0ebcea4a8531dbac6456eb788facb8cab1ef93d03998381d44069071492a7
[INFO] running `Command { std: "docker" "start" "-a" "73b0ebcea4a8531dbac6456eb788facb8cab1ef93d03998381d44069071492a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling semver v1.0.21
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling coap-message v0.2.3
[INFO] [stderr]    Compiling embedded-io-async v0.6.1
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]    Compiling crc-catalog v2.4.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling crc v3.0.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling embedded-io v0.4.0
[INFO] [stderr]    Compiling no-std-net v0.6.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling futures-task v0.3.30
[INFO] [stderr]    Compiling embassy-sync v0.3.0
[INFO] [stderr]    Compiling embedded-io v0.6.1
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling critical-section v1.1.2
[INFO] [stderr]    Compiling coap-numbers v0.2.3
[INFO] [stderr]    Compiling coap-request v0.1.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling embassy-futures v0.1.1
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]    Compiling generic-array v0.13.3
[INFO] [stderr]    Compiling embedded-nal v0.7.0
[INFO] [stderr]    Compiling embedded-nal-async v0.6.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/embedded-nal-async-0.6.0/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(async_fn_in_trait, impl_trait_projections)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `impl_trait_projections` has been stable since `1.74.0` and no longer requires an attribute to enable
[INFO] [stdout]   = help: the feature `impl_trait_projections` has been stable since `1.74.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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-nal-async` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "73b0ebcea4a8531dbac6456eb788facb8cab1ef93d03998381d44069071492a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73b0ebcea4a8531dbac6456eb788facb8cab1ef93d03998381d44069071492a7", kill_on_drop: false }`
[INFO] [stdout] 73b0ebcea4a8531dbac6456eb788facb8cab1ef93d03998381d44069071492a7
