Dec 05 11:20:37.988 INFO checking kg-diag-derive-0.1.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 11:20:37.988 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 11:20:38.524 INFO [stdout] a85bab2f57aeed02d6a9ba3af5affb17450b0414a555bbaad8f8c6173dc7d78e
Dec 05 11:20:38.532 INFO running `"docker" "start" "-a" "a85bab2f57aeed02d6a9ba3af5affb17450b0414a555bbaad8f8c6173dc7d78e"`
Dec 05 11:20:40.026 INFO [stderr] usermod: no changes
Dec 05 11:20:40.143 INFO [stderr]    Compiling kg-utils v0.2.3
Dec 05 11:20:40.143 INFO [stderr]     Checking syn v0.15.22
Dec 05 11:20:40.143 INFO [stderr]    Compiling synstructure v0.10.1
Dec 05 11:20:41.275 INFO [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra' (see issue #55724)
Dec 05 11:20:41.275 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/kg-utils-0.2.3/src/collections/sparse_set.rs:231:11
Dec 05 11:20:41.275 INFO [stderr]     |
Dec 05 11:20:41.275 INFO [stderr] 231 |     match Layout::array::<T>(size) {
Dec 05 11:20:41.275 INFO [stderr]     |           ^^^^^^^^^^^^^^^^^^
Dec 05 11:20:41.275 INFO [stderr]     |
Dec 05 11:20:41.275 INFO [stderr]     = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
Dec 05 11:20:41.275 INFO [stderr] 
Dec 05 11:20:41.423 INFO [stderr] error: aborting due to previous error
Dec 05 11:20:41.423 INFO [stderr] 
Dec 05 11:20:41.423 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 05 11:20:41.431 INFO [stderr] error: Could not compile `kg-utils`.
Dec 05 11:20:41.431 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 05 11:20:52.598 INFO [stderr] error: build failed
Dec 05 11:20:52.601 INFO [stderr] su: No module specific data is present
Dec 05 11:20:52.847 INFO running `"docker" "inspect" "a85bab2f57aeed02d6a9ba3af5affb17450b0414a555bbaad8f8c6173dc7d78e"`
Dec 05 11:20:52.934 INFO running `"docker" "rm" "-f" "a85bab2f57aeed02d6a9ba3af5affb17450b0414a555bbaad8f8c6173dc7d78e"`
Dec 05 11:20:53.032 INFO [stdout] a85bab2f57aeed02d6a9ba3af5affb17450b0414a555bbaad8f8c6173dc7d78e