Nov 18 07:59:33.726 INFO testing kg-io-0.1.0 against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 18 07:59:33.728 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 07:59:34.215 INFO [stdout] 9c53db1b4a8f7a934fa8bf571532cc643ce80fd149c33c1afcac8fc391064097
Nov 18 07:59:34.218 INFO running `"docker" "start" "-a" "9c53db1b4a8f7a934fa8bf571532cc643ce80fd149c33c1afcac8fc391064097"`
Nov 18 07:59:36.127 INFO [stderr] usermod: no changes
Nov 18 07:59:36.252 INFO [stderr]    Compiling kg-utils v0.2.3
Nov 18 07:59:36.253 INFO [stderr]    Compiling syn v0.15.21
Nov 18 07:59:36.255 INFO [stderr]    Compiling kg-display v0.1.1
Nov 18 07:59:38.111 INFO [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra' (see issue #55724)
Nov 18 07:59:38.112 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/kg-utils-0.2.3/src/collections/sparse_set.rs:231:11
Nov 18 07:59:38.112 INFO [stderr]     |
Nov 18 07:59:38.112 INFO [stderr] 231 |     match Layout::array::<T>(size) {
Nov 18 07:59:38.113 INFO [stderr]     |           ^^^^^^^^^^^^^^^^^^
Nov 18 07:59:38.113 INFO [stderr]     |
Nov 18 07:59:38.113 INFO [stderr]     = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
Nov 18 07:59:38.114 INFO [stderr] 
Nov 18 07:59:38.419 INFO [stderr] error: aborting due to previous error
Nov 18 07:59:38.419 INFO [stderr] 
Nov 18 07:59:38.419 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Nov 18 07:59:38.423 INFO [stderr] error: Could not compile `kg-utils`.
Nov 18 07:59:38.423 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Nov 18 07:59:56.150 INFO [stderr] error: build failed
Nov 18 07:59:56.151 INFO [stderr] su: No module specific data is present
Nov 18 07:59:56.967 INFO running `"docker" "inspect" "9c53db1b4a8f7a934fa8bf571532cc643ce80fd149c33c1afcac8fc391064097"`
Nov 18 07:59:57.205 INFO running `"docker" "rm" "-f" "9c53db1b4a8f7a934fa8bf571532cc643ce80fd149c33c1afcac8fc391064097"`
Nov 18 07:59:57.447 INFO [stdout] 9c53db1b4a8f7a934fa8bf571532cc643ce80fd149c33c1afcac8fc391064097