[INFO] fetching crate derive_more_preview 0.1.0...
[INFO] testing derive_more_preview-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate derive_more_preview 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate derive_more_preview 0.1.0
[INFO] removed 1 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate derive_more_preview 0.1.0
[INFO] tweaked toml for crates.io crate derive_more_preview 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate derive_more_preview 0.1.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate derive_more_preview 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5f5799690f083d7aba52c9ebddca9fbdcb631c22bd25fc195f788646f6d484c
[INFO] running `Command { std: "docker" "start" "-a" "a5f5799690f083d7aba52c9ebddca9fbdcb631c22bd25fc195f788646f6d484c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5f5799690f083d7aba52c9ebddca9fbdcb631c22bd25fc195f788646f6d484c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5f5799690f083d7aba52c9ebddca9fbdcb631c22bd25fc195f788646f6d484c", kill_on_drop: false }`
[INFO] [stdout] a5f5799690f083d7aba52c9ebddca9fbdcb631c22bd25fc195f788646f6d484c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 405ec49fa24c53643d027192472026c1ad1b09742d55de9cc00a8978292b1749
[INFO] running `Command { std: "docker" "start" "-a" "405ec49fa24c53643d027192472026c1ad1b09742d55de9cc00a8978292b1749", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.64
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling unicode-ident v1.0.10
[INFO] [stderr]    Compiling syn v2.0.25
[INFO] [stderr]    Compiling derive_more_preview-impl v0.1.0
[INFO] [stderr]    Compiling derive_more_preview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: at least one derive feature must be enabled (or the "full" one enabling all the derives)
[INFO] [stdout]    --> src/lib.rs:120:1
[INFO] [stdout]     |
[INFO] [stdout] 120 | / compile_error!(
[INFO] [stdout] 121 | |     "at least one derive feature must be enabled (or the \"full\" one enabling all the derives)"
[INFO] [stdout] 122 | | );
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `derive_more_impl::*`
[INFO] [stdout]   --> src/lib.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub use derive_more_impl::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `derive_more_preview` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "405ec49fa24c53643d027192472026c1ad1b09742d55de9cc00a8978292b1749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "405ec49fa24c53643d027192472026c1ad1b09742d55de9cc00a8978292b1749", kill_on_drop: false }`
[INFO] [stdout] 405ec49fa24c53643d027192472026c1ad1b09742d55de9cc00a8978292b1749