Dec 12 12:24:45.661 INFO checking kg-display-derive-0.1.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 12:24:45.661 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 12 12:24:46.122 INFO [stdout] 717d472bb4df77ccf9130d186e49c69a1b56c2e60cc0565973df53007f04c7d2
Dec 12 12:24:46.124 INFO running `"docker" "start" "-a" "717d472bb4df77ccf9130d186e49c69a1b56c2e60cc0565973df53007f04c7d2"`
Dec 12 12:24:47.626 INFO [stderr] usermod: no changes
Dec 12 12:24:47.752 INFO [stderr]    Compiling libc v0.2.45
Dec 12 12:24:47.752 INFO [stderr]    Compiling heapsize v0.4.2
Dec 12 12:24:47.752 INFO [stderr]     Checking kg-utils v0.2.3
Dec 12 12:24:47.756 INFO [stderr]     Checking syn v0.15.22
Dec 12 12:24:47.756 INFO [stderr]     Checking kg-display v0.1.1
Dec 12 12:24:49.333 INFO [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra' (see issue #55724)
Dec 12 12:24:49.333 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/kg-utils-0.2.3/src/collections/sparse_set.rs:231:11
Dec 12 12:24:49.333 INFO [stderr]     |
Dec 12 12:24:49.333 INFO [stderr] 231 |     match Layout::array::<T>(size) {
Dec 12 12:24:49.333 INFO [stderr]     |           ^^^^^^^^^^^^^^^^^^
Dec 12 12:24:49.333 INFO [stderr]     |
Dec 12 12:24:49.333 INFO [stderr]     = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
Dec 12 12:24:49.333 INFO [stderr] 
Dec 12 12:24:49.460 INFO [stderr] error: aborting due to previous error
Dec 12 12:24:49.460 INFO [stderr] 
Dec 12 12:24:49.460 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 12 12:24:49.467 INFO [stderr] error: Could not compile `kg-utils`.
Dec 12 12:24:49.467 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 12 12:24:57.596 INFO [stderr] error: build failed
Dec 12 12:24:57.600 INFO [stderr] su: No module specific data is present
Dec 12 12:24:58.852 INFO running `"docker" "inspect" "717d472bb4df77ccf9130d186e49c69a1b56c2e60cc0565973df53007f04c7d2"`
Dec 12 12:24:59.232 INFO running `"docker" "rm" "-f" "717d472bb4df77ccf9130d186e49c69a1b56c2e60cc0565973df53007f04c7d2"`
Dec 12 12:24:59.596 INFO [stdout] 717d472bb4df77ccf9130d186e49c69a1b56c2e60cc0565973df53007f04c7d2