[INFO] fetching crate plutus_data_derive 0.0.81...
[INFO] testing plutus_data_derive-0.0.81 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate plutus_data_derive 0.0.81 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate plutus_data_derive 0.0.81
[INFO] finished tweaking crates.io crate plutus_data_derive 0.0.81
[INFO] tweaked toml for crates.io crate plutus_data_derive 0.0.81 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate plutus_data_derive 0.0.81 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to highest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v3.0.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 79f8e6f4d56b435404a4c330e8ff17757a3992cf7ce108b918aa655cdf9d9675
[INFO] running `Command { std: "docker" "start" "79f8e6f4d56b435404a4c330e8ff17757a3992cf7ce108b918aa655cdf9d9675", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79f8e6f4d56b435404a4c330e8ff17757a3992cf7ce108b918aa655cdf9d9675", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "79f8e6f4d56b435404a4c330e8ff17757a3992cf7ce108b918aa655cdf9d9675" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79f8e6f4d56b435404a4c330e8ff17757a3992cf7ce108b918aa655cdf9d9675", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "79f8e6f4d56b435404a4c330e8ff17757a3992cf7ce108b918aa655cdf9d9675" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling plutus_data_derive v0.0.81 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `plutus_data_derive` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "79f8e6f4d56b435404a4c330e8ff17757a3992cf7ce108b918aa655cdf9d9675", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79f8e6f4d56b435404a4c330e8ff17757a3992cf7ce108b918aa655cdf9d9675", kill_on_drop: false }`
[INFO] [stdout] 79f8e6f4d56b435404a4c330e8ff17757a3992cf7ce108b918aa655cdf9d9675
