[INFO] fetching crate edgedb-composable-query-derive 0.0.4...
[INFO] testing edgedb-composable-query-derive-0.0.4 against 1.76.0 for beta-1.77-1
[INFO] extracting crate edgedb-composable-query-derive 0.0.4 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate edgedb-composable-query-derive 0.0.4 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 edgedb-composable-query-derive 0.0.4
[INFO] finished tweaking crates.io crate edgedb-composable-query-derive 0.0.4
[INFO] tweaked toml for crates.io crate edgedb-composable-query-derive 0.0.4 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 basic-toml v0.1.8
[INFO] [stderr]   Downloaded trybuild v1.0.89
[INFO] [stderr]   Downloaded insta v1.34.0
[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] 215bf7627125dd80f97445882cffdebd165cb27b210faae7fb949dad040de759
[INFO] running `Command { std: "docker" "start" "-a" "215bf7627125dd80f97445882cffdebd165cb27b210faae7fb949dad040de759", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "215bf7627125dd80f97445882cffdebd165cb27b210faae7fb949dad040de759", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "215bf7627125dd80f97445882cffdebd165cb27b210faae7fb949dad040de759", kill_on_drop: false }`
[INFO] [stdout] 215bf7627125dd80f97445882cffdebd165cb27b210faae7fb949dad040de759
[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] a429e70af50f5e818166dcb80d5487df79b427b03b51f10a0622d0117fef3711
[INFO] running `Command { std: "docker" "start" "-a" "a429e70af50f5e818166dcb80d5487df79b427b03b51f10a0622d0117fef3711", kill_on_drop: false }`
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]    Compiling strum v0.25.0
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling darling_core v0.20.5
[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/darling_core-0.20.5/src/lib.rs:2:46
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(feature = "diagnostics", feature(proc_macro_diagnostic))]
[INFO] [stdout]   |                                              ^^^^^^^^^^^^^^^^^^^^^
[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 `darling_core` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a429e70af50f5e818166dcb80d5487df79b427b03b51f10a0622d0117fef3711", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a429e70af50f5e818166dcb80d5487df79b427b03b51f10a0622d0117fef3711", kill_on_drop: false }`
[INFO] [stdout] a429e70af50f5e818166dcb80d5487df79b427b03b51f10a0622d0117fef3711
