Nov 18 07:59:28.235 INFO testing kg-symbol-0.1.7 against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 18 07:59:28.235 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-7/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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 07:59:28.595 INFO [stdout] ea1f8683718e8da6a9ae99ee66649a93e8e14b6fdcd1198a3ca5b57f91ff129a
Nov 18 07:59:28.599 INFO running `"docker" "start" "-a" "ea1f8683718e8da6a9ae99ee66649a93e8e14b6fdcd1198a3ca5b57f91ff129a"`
Nov 18 07:59:30.023 INFO [stderr] usermod: no changes
Nov 18 07:59:30.203 INFO [stderr]    Compiling lock_api v0.1.4
Nov 18 07:59:30.203 INFO [stderr]    Compiling parking_lot_core v0.3.1
Nov 18 07:59:34.004 INFO [stderr]    Compiling parking_lot v0.6.4
Nov 18 07:59:36.521 INFO [stderr]    Compiling kg-symbol v0.1.7 (/source)
Nov 18 07:59:37.795 INFO [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra' (see issue #55724)
Nov 18 07:59:37.795 INFO [stderr]   --> src/lib.rs:46:33
Nov 18 07:59:37.795 INFO [stderr]    |
Nov 18 07:59:37.795 INFO [stderr] 46 |         Layout::new::<Header>().extend(Layout::from_size_align_unchecked(len, 1)).unwrap()
Nov 18 07:59:37.795 INFO [stderr]    |                                 ^^^^^^
Nov 18 07:59:37.795 INFO [stderr]    |
Nov 18 07:59:37.795 INFO [stderr]    = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
Nov 18 07:59:37.795 INFO [stderr] 
Nov 18 07:59:37.827 INFO [stderr] error: aborting due to previous error
Nov 18 07:59:37.827 INFO [stderr] 
Nov 18 07:59:37.827 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Nov 18 07:59:37.827 INFO [stderr] error: Could not compile `kg-symbol`.
Nov 18 07:59:37.827 INFO [stderr] 
Nov 18 07:59:37.827 INFO [stderr] To learn more, run the command again with --verbose.
Nov 18 07:59:37.827 INFO [stderr] su: No module specific data is present
Nov 18 07:59:38.573 INFO running `"docker" "inspect" "ea1f8683718e8da6a9ae99ee66649a93e8e14b6fdcd1198a3ca5b57f91ff129a"`
Nov 18 07:59:38.841 INFO running `"docker" "rm" "-f" "ea1f8683718e8da6a9ae99ee66649a93e8e14b6fdcd1198a3ca5b57f91ff129a"`
Nov 18 07:59:39.155 INFO [stdout] ea1f8683718e8da6a9ae99ee66649a93e8e14b6fdcd1198a3ca5b57f91ff129a