[INFO] fetching crate tea-codec-macros 0.3.0-dev.7...
[INFO] testing tea-codec-macros-0.3.0-dev.7 against 1.76.0 for beta-1.77-1
[INFO] extracting crate tea-codec-macros 0.3.0-dev.7 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate tea-codec-macros 0.3.0-dev.7 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 tea-codec-macros 0.3.0-dev.7
[INFO] finished tweaking crates.io crate tea-codec-macros 0.3.0-dev.7
[INFO] tweaked toml for crates.io crate tea-codec-macros 0.3.0-dev.7 written to /workspace/builds/worker-6-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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 509198c5a66f1b5184a8b7a99df3e9514edcd51334d058607e84bbd64decc591
[INFO] running `Command { std: "docker" "start" "-a" "509198c5a66f1b5184a8b7a99df3e9514edcd51334d058607e84bbd64decc591", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "509198c5a66f1b5184a8b7a99df3e9514edcd51334d058607e84bbd64decc591", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "509198c5a66f1b5184a8b7a99df3e9514edcd51334d058607e84bbd64decc591", kill_on_drop: false }`
[INFO] [stdout] 509198c5a66f1b5184a8b7a99df3e9514edcd51334d058607e84bbd64decc591
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7cf93d83e13dae12ac2a8b4f9424106746d25a835c359cdade8aff6540fade03
[INFO] running `Command { std: "docker" "start" "-a" "7cf93d83e13dae12ac2a8b4f9424106746d25a835c359cdade8aff6540fade03", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]    Compiling convert_case v0.5.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling tea-codec-macros v0.3.0-dev.7 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tea-codec-macros` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "7cf93d83e13dae12ac2a8b4f9424106746d25a835c359cdade8aff6540fade03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cf93d83e13dae12ac2a8b4f9424106746d25a835c359cdade8aff6540fade03", kill_on_drop: false }`
[INFO] [stdout] 7cf93d83e13dae12ac2a8b4f9424106746d25a835c359cdade8aff6540fade03
