Dec 02 06:20:03.338 INFO documenting kg-tree-0.1.1 against try#f86f76f89ea2b1ccbfb3741962ec2029d878a389 for pr-55318-1
Dec 02 06:20:03.339 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318-1/worker-6/try#f86f76f89ea2b1ccbfb3741962ec2029d878a389:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55318-1/try#f86f76f89ea2b1ccbfb3741962ec2029d878a389:/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 +f86f76f89ea2b1ccbfb3741962ec2029d878a389-alt doc --frozen --no-deps --document-private-items" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 06:20:03.700 INFO [stdout] ad4ac3fa4c47e05a0843d26a6682f9b70ca49a99c703946a30f80e329e9279fe
Dec 02 06:20:03.700 INFO running `"docker" "start" "-a" "ad4ac3fa4c47e05a0843d26a6682f9b70ca49a99c703946a30f80e329e9279fe"`
Dec 02 06:20:04.799 INFO [stderr] usermod: no changes
Dec 02 06:20:05.016 INFO [stderr]    Compiling heapsize v0.4.2
Dec 02 06:20:05.016 INFO [stderr]     Checking kg-utils v0.2.3
Dec 02 06:20:05.016 INFO [stderr]    Compiling synstructure v0.5.2
Dec 02 06:20:05.016 INFO [stderr]    Compiling syn v0.15.22
Dec 02 06:20:05.016 INFO [stderr]    Compiling kg-display v0.1.1
Dec 02 06:20:05.016 INFO [stderr]     Checking parking_lot_core v0.3.1
Dec 02 06:20:07.268 INFO [stderr]     Checking parking_lot v0.6.4
Dec 02 06:20:07.661 INFO [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra' (see issue #55724)
Dec 02 06:20:07.661 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/kg-utils-0.2.3/src/collections/sparse_set.rs:231:11
Dec 02 06:20:07.661 INFO [stderr]     |
Dec 02 06:20:07.661 INFO [stderr] 231 |     match Layout::array::<T>(size) {
Dec 02 06:20:07.661 INFO [stderr]     |           ^^^^^^^^^^^^^^^^^^
Dec 02 06:20:07.661 INFO [stderr]     |
Dec 02 06:20:07.661 INFO [stderr]     = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
Dec 02 06:20:07.661 INFO [stderr] 
Dec 02 06:20:08.176 INFO [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra' (see issue #55724)
Dec 02 06:20:08.176 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/kg-utils-0.2.3/src/collections/sparse_set.rs:231:11
Dec 02 06:20:08.176 INFO [stderr]     |
Dec 02 06:20:08.177 INFO [stderr] 231 |     match Layout::array::<T>(size) {
Dec 02 06:20:08.177 INFO [stderr]     |           ^^^^^^^^^^^^^^^^^^
Dec 02 06:20:08.177 INFO [stderr]     |
Dec 02 06:20:08.177 INFO [stderr]     = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
Dec 02 06:20:08.177 INFO [stderr] 
Dec 02 06:20:08.209 INFO [stderr] error: aborting due to previous error
Dec 02 06:20:08.209 INFO [stderr] 
Dec 02 06:20:08.210 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 02 06:20:08.252 INFO [stderr] error: Could not compile `kg-utils`.
Dec 02 06:20:08.252 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 06:20:08.348 INFO [stderr] error: aborting due to previous error
Dec 02 06:20:08.349 INFO [stderr] 
Dec 02 06:20:08.349 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 02 06:20:08.350 INFO [stderr] error: Could not compile `kg-utils`.
Dec 02 06:20:08.350 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 06:20:29.531 INFO [stderr] error: build failed
Dec 02 06:20:29.531 INFO [stderr] su: No module specific data is present
Dec 02 06:20:30.314 INFO running `"docker" "inspect" "ad4ac3fa4c47e05a0843d26a6682f9b70ca49a99c703946a30f80e329e9279fe"`
Dec 02 06:20:30.664 INFO running `"docker" "rm" "-f" "ad4ac3fa4c47e05a0843d26a6682f9b70ca49a99c703946a30f80e329e9279fe"`
Dec 02 06:20:30.957 INFO [stdout] ad4ac3fa4c47e05a0843d26a6682f9b70ca49a99c703946a30f80e329e9279fe