Nov 18 07:59:27.906 INFO testing kg-symbol-0.1.7 against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 18 07:59:27.907 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 18 07:59:28.383 INFO [stdout] b9b7d7cc573413ab0d44ce954a2a75de9fc08eb6d9ebce0970a61add7638cd9f
Nov 18 07:59:28.392 INFO running `"docker" "start" "-a" "b9b7d7cc573413ab0d44ce954a2a75de9fc08eb6d9ebce0970a61add7638cd9f"`
Nov 18 07:59:29.494 INFO [stderr] usermod: no changes
Nov 18 07:59:29.676 INFO [stderr]    Compiling lock_api v0.1.4
Nov 18 07:59:29.676 INFO [stderr]    Compiling parking_lot_core v0.3.1
Nov 18 07:59:33.816 INFO [stderr]    Compiling parking_lot v0.6.4
Nov 18 07:59:36.183 INFO [stderr]    Compiling kg-symbol v0.1.7 (/source)
Nov 18 07:59:37.430 INFO [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra' (see issue #55724)
Nov 18 07:59:37.430 INFO [stderr]   --> src/lib.rs:46:33
Nov 18 07:59:37.431 INFO [stderr]    |
Nov 18 07:59:37.431 INFO [stderr] 46 |         Layout::new::<Header>().extend(Layout::from_size_align_unchecked(len, 1)).unwrap()
Nov 18 07:59:37.431 INFO [stderr]    |                                 ^^^^^^
Nov 18 07:59:37.431 INFO [stderr]    |
Nov 18 07:59:37.431 INFO [stderr]    = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
Nov 18 07:59:37.432 INFO [stderr] 
Nov 18 07:59:37.458 INFO [stderr] error: aborting due to previous error
Nov 18 07:59:37.458 INFO [stderr] 
Nov 18 07:59:37.458 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Nov 18 07:59:37.468 INFO [stderr] error: Could not compile `kg-symbol`.
Nov 18 07:59:37.468 INFO [stderr] 
Nov 18 07:59:37.469 INFO [stderr] To learn more, run the command again with --verbose.
Nov 18 07:59:37.471 INFO [stderr] su: No module specific data is present
Nov 18 07:59:38.547 INFO running `"docker" "inspect" "b9b7d7cc573413ab0d44ce954a2a75de9fc08eb6d9ebce0970a61add7638cd9f"`
Nov 18 07:59:38.875 INFO running `"docker" "rm" "-f" "b9b7d7cc573413ab0d44ce954a2a75de9fc08eb6d9ebce0970a61add7638cd9f"`
Nov 18 07:59:39.127 INFO [stdout] b9b7d7cc573413ab0d44ce954a2a75de9fc08eb6d9ebce0970a61add7638cd9f