Dec 07 09:15:15.746 INFO testing kg-symbol-0.1.8 against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 07 09:15:15.746 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 07 09:15:16.206 INFO [stdout] 479527cfbc208f3f53e79c880eb64d0f860c06c9617140611ba43a2ecd4d048a
Dec 07 09:15:16.208 INFO running `"docker" "start" "-a" "479527cfbc208f3f53e79c880eb64d0f860c06c9617140611ba43a2ecd4d048a"`
Dec 07 09:15:17.931 INFO [stderr] usermod: no changes
Dec 07 09:15:18.060 INFO [stderr]    Compiling parking_lot_core v0.3.1
Dec 07 09:15:20.193 INFO [stderr]    Compiling parking_lot v0.6.4
Dec 07 09:15:22.679 INFO [stderr]    Compiling kg-symbol v0.1.8 (/source)
Dec 07 09:15:24.100 INFO [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra' (see issue #55724)
Dec 07 09:15:24.100 INFO [stderr]   --> src/lib.rs:50:33
Dec 07 09:15:24.100 INFO [stderr]    |
Dec 07 09:15:24.100 INFO [stderr] 50 |         Layout::new::<Header>().extend(Layout::from_size_align_unchecked(len, 1)).unwrap()
Dec 07 09:15:24.100 INFO [stderr]    |                                 ^^^^^^
Dec 07 09:15:24.100 INFO [stderr]    |
Dec 07 09:15:24.100 INFO [stderr]    = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
Dec 07 09:15:24.100 INFO [stderr] 
Dec 07 09:15:24.124 INFO [stderr] error: aborting due to previous error
Dec 07 09:15:24.124 INFO [stderr] 
Dec 07 09:15:24.124 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 07 09:15:24.132 INFO [stderr] error: Could not compile `kg-symbol`.
Dec 07 09:15:24.132 INFO [stderr] 
Dec 07 09:15:24.132 INFO [stderr] To learn more, run the command again with --verbose.
Dec 07 09:15:24.140 INFO [stderr] su: No module specific data is present
Dec 07 09:15:24.968 INFO running `"docker" "inspect" "479527cfbc208f3f53e79c880eb64d0f860c06c9617140611ba43a2ecd4d048a"`
Dec 07 09:15:25.250 INFO running `"docker" "rm" "-f" "479527cfbc208f3f53e79c880eb64d0f860c06c9617140611ba43a2ecd4d048a"`
Dec 07 09:15:25.527 INFO [stdout] 479527cfbc208f3f53e79c880eb64d0f860c06c9617140611ba43a2ecd4d048a