Dec 15 06:51:08.016 INFO testing kg-symbol-0.1.8 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 15 06:51:08.016 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 06:51:08.462 INFO [stdout] b54ff488ff63e9ba8dc87035247d96b270a1f42f8b13d65ccf10c9d5c02bddb6
Dec 15 06:51:08.471 INFO running `"docker" "start" "-a" "b54ff488ff63e9ba8dc87035247d96b270a1f42f8b13d65ccf10c9d5c02bddb6"`
Dec 15 06:51:10.595 INFO [stderr] usermod: no changes
Dec 15 06:51:10.711 INFO [stderr]    Compiling parking_lot_core v0.3.1
Dec 15 06:51:12.879 INFO [stderr]    Compiling parking_lot v0.6.4
Dec 15 06:51:15.202 INFO [stderr]    Compiling kg-symbol v0.1.8 (/source)
Dec 15 06:51:16.859 INFO [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra' (see issue #55724)
Dec 15 06:51:16.859 INFO [stderr]   --> src/lib.rs:50:33
Dec 15 06:51:16.859 INFO [stderr]    |
Dec 15 06:51:16.859 INFO [stderr] 50 |         Layout::new::<Header>().extend(Layout::from_size_align_unchecked(len, 1)).unwrap()
Dec 15 06:51:16.859 INFO [stderr]    |                                 ^^^^^^
Dec 15 06:51:16.859 INFO [stderr]    |
Dec 15 06:51:16.859 INFO [stderr]    = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
Dec 15 06:51:16.859 INFO [stderr] 
Dec 15 06:51:16.887 INFO [stderr] error: aborting due to previous error
Dec 15 06:51:16.887 INFO [stderr] 
Dec 15 06:51:16.887 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 15 06:51:16.903 INFO [stderr] error: Could not compile `kg-symbol`.
Dec 15 06:51:16.903 INFO [stderr] 
Dec 15 06:51:16.903 INFO [stderr] To learn more, run the command again with --verbose.
Dec 15 06:51:16.903 INFO [stderr] su: No module specific data is present
Dec 15 06:51:17.747 INFO running `"docker" "inspect" "b54ff488ff63e9ba8dc87035247d96b270a1f42f8b13d65ccf10c9d5c02bddb6"`
Dec 15 06:51:18.147 INFO running `"docker" "rm" "-f" "b54ff488ff63e9ba8dc87035247d96b270a1f42f8b13d65ccf10c9d5c02bddb6"`
Dec 15 06:51:18.479 INFO [stdout] b54ff488ff63e9ba8dc87035247d96b270a1f42f8b13d65ccf10c9d5c02bddb6