Dec 15 06:51:27.146 INFO testing kg-display-derive-0.1.0 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 15 06:51:27.146 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 15 06:51:27.579 INFO [stdout] 92888d278c0f2f1213818a8f4baf5eb50ca062dcfba6e7eab820aa8423f72ed6
Dec 15 06:51:27.585 INFO running `"docker" "start" "-a" "92888d278c0f2f1213818a8f4baf5eb50ca062dcfba6e7eab820aa8423f72ed6"`
Dec 15 06:51:28.667 INFO [stderr] usermod: no changes
Dec 15 06:51:28.748 INFO [stderr]    Compiling kg-utils v0.2.3
Dec 15 06:51:28.749 INFO [stderr]    Compiling syn v0.15.22
Dec 15 06:51:28.759 INFO [stderr]    Compiling kg-display v0.1.1
Dec 15 06:51:30.158 INFO [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra' (see issue #55724)
Dec 15 06:51:30.158 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/kg-utils-0.2.3/src/collections/sparse_set.rs:231:11
Dec 15 06:51:30.158 INFO [stderr]     |
Dec 15 06:51:30.158 INFO [stderr] 231 |     match Layout::array::<T>(size) {
Dec 15 06:51:30.158 INFO [stderr]     |           ^^^^^^^^^^^^^^^^^^
Dec 15 06:51:30.158 INFO [stderr]     |
Dec 15 06:51:30.158 INFO [stderr]     = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
Dec 15 06:51:30.158 INFO [stderr] 
Dec 15 06:51:30.290 INFO [stderr] error: aborting due to previous error
Dec 15 06:51:30.290 INFO [stderr] 
Dec 15 06:51:30.295 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 15 06:51:30.298 INFO [stderr] error: Could not compile `kg-utils`.
Dec 15 06:51:30.298 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 15 06:51:44.671 INFO [stderr] error: build failed
Dec 15 06:51:44.671 INFO [stderr] su: No module specific data is present
Dec 15 06:51:45.297 INFO running `"docker" "inspect" "92888d278c0f2f1213818a8f4baf5eb50ca062dcfba6e7eab820aa8423f72ed6"`
Dec 15 06:51:45.527 INFO running `"docker" "rm" "-f" "92888d278c0f2f1213818a8f4baf5eb50ca062dcfba6e7eab820aa8423f72ed6"`
Dec 15 06:51:45.831 INFO [stdout] 92888d278c0f2f1213818a8f4baf5eb50ca062dcfba6e7eab820aa8423f72ed6