[INFO] fetching crate sewup-derive 0.1.14...
[INFO] testing sewup-derive-0.1.14 against 1.75.0 for beta-1.76-1
[INFO] extracting crate sewup-derive 0.1.14 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate sewup-derive 0.1.14 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sewup-derive 0.1.14
[INFO] finished tweaking crates.io crate sewup-derive 0.1.14
[INFO] tweaked toml for crates.io crate sewup-derive 0.1.14 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" "+1.75.0" "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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9eeba91caaf524d77c9cdee2dc0023c27586a3f681ddd8fc25c2f07d8a77ef49
[INFO] running `Command { std: "docker" "start" "-a" "9eeba91caaf524d77c9cdee2dc0023c27586a3f681ddd8fc25c2f07d8a77ef49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9eeba91caaf524d77c9cdee2dc0023c27586a3f681ddd8fc25c2f07d8a77ef49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eeba91caaf524d77c9cdee2dc0023c27586a3f681ddd8fc25c2f07d8a77ef49", kill_on_drop: false }`
[INFO] [stdout] 9eeba91caaf524d77c9cdee2dc0023c27586a3f681ddd8fc25c2f07d8a77ef49
[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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa9413f71433c642a41101318d19b7dc93695ed2f6ddadf2de66e5bcb6297bfb
[INFO] running `Command { std: "docker" "start" "-a" "fa9413f71433c642a41101318d19b7dc93695ed2f6ddadf2de66e5bcb6297bfb", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling convert_case v0.5.0
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling fancy-regex v0.7.1
[INFO] [stderr]    Compiling sewup-derive v0.1.14 (/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(box_into_inner)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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 `sewup-derive` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "fa9413f71433c642a41101318d19b7dc93695ed2f6ddadf2de66e5bcb6297bfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa9413f71433c642a41101318d19b7dc93695ed2f6ddadf2de66e5bcb6297bfb", kill_on_drop: false }`
[INFO] [stdout] fa9413f71433c642a41101318d19b7dc93695ed2f6ddadf2de66e5bcb6297bfb
