Nov 17 16:19:32.951 INFO testing Centril/rust_strong_rc against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 17 16:19:32.951 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 17 16:19:33.349 INFO [stdout] d339dc15e7682af3312e06b9ff6d6d28ae1cc972a5363b7fa3fff121d97ce605
Nov 17 16:19:33.357 INFO running `"docker" "start" "-a" "d339dc15e7682af3312e06b9ff6d6d28ae1cc972a5363b7fa3fff121d97ce605"`
Nov 17 16:19:34.435 INFO [stderr] usermod: no changes
Nov 17 16:19:34.527 INFO [stderr]    Compiling strong_rc v0.1.4 (/source)
Nov 17 16:19:35.159 INFO [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra' (see issue #55724)
Nov 17 16:19:35.159 INFO [stderr]    --> src/lib.rs:284:46
Nov 17 16:19:35.159 INFO [stderr]     |
Nov 17 16:19:35.159 INFO [stderr] 284 |         let offset = (layout.size() + layout.padding_needed_for(align)) as isize;
Nov 17 16:19:35.159 INFO [stderr]     |                                              ^^^^^^^^^^^^^^^^^^
Nov 17 16:19:35.159 INFO [stderr]     |
Nov 17 16:19:35.159 INFO [stderr]     = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
Nov 17 16:19:35.159 INFO [stderr] 
Nov 17 16:19:35.199 INFO [stderr] error: aborting due to previous error
Nov 17 16:19:35.199 INFO [stderr] 
Nov 17 16:19:35.199 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Nov 17 16:19:35.201 INFO [stderr] error: Could not compile `strong_rc`.
Nov 17 16:19:35.201 INFO [stderr] 
Nov 17 16:19:35.201 INFO [stderr] To learn more, run the command again with --verbose.
Nov 17 16:19:35.202 INFO [stderr] su: No module specific data is present
Nov 17 16:19:35.988 INFO running `"docker" "inspect" "d339dc15e7682af3312e06b9ff6d6d28ae1cc972a5363b7fa3fff121d97ce605"`
Nov 17 16:19:36.267 INFO running `"docker" "rm" "-f" "d339dc15e7682af3312e06b9ff6d6d28ae1cc972a5363b7fa3fff121d97ce605"`
Nov 17 16:19:36.598 INFO [stdout] d339dc15e7682af3312e06b9ff6d6d28ae1cc972a5363b7fa3fff121d97ce605