Sep 21 11:29:33.240 INFO checking default_allocator-0.2.3 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 11:29:33.240 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 11:29:33.240 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-1/master#f7f4c500b46603386e940f116b469c7adc043a6d:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 11:29:33.374 INFO blam! 6f40eba663caa6be7cadb250f52db4f0a484d1861d13c8fe9df5bd575a67af8e
Sep 21 11:29:33.375 INFO running `"docker" "start" "-a" "6f40eba663caa6be7cadb250f52db4f0a484d1861d13c8fe9df5bd575a67af8e"`
Sep 21 11:29:34.337 INFO kablam! usermod: no changes
Sep 21 11:29:34.360 INFO kablam!    Compiling ptr v0.1.4
Sep 21 11:29:34.918 INFO kablam! error[E0635]: unknown feature `const_align_of`
Sep 21 11:29:34.918 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ptr-0.1.4/src/lib.rs:13:12
Sep 21 11:29:34.918 INFO kablam!    |
Sep 21 11:29:34.918 INFO kablam! 13 | #![feature(const_align_of)]
Sep 21 11:29:34.918 INFO kablam!    |            ^^^^^^^^^^^^^^
Sep 21 11:29:34.918 INFO kablam! 
Sep 21 11:29:34.921 INFO kablam! error: aborting due to previous error
Sep 21 11:29:34.921 INFO kablam! 
Sep 21 11:29:34.921 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 21 11:29:34.927 INFO kablam! error: Could not compile `ptr`.
Sep 21 11:29:34.927 INFO kablam! 
Sep 21 11:29:34.927 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 11:29:34.928 INFO kablam! su: No module specific data is present
Sep 21 11:29:35.855 INFO running `"docker" "rm" "-f" "6f40eba663caa6be7cadb250f52db4f0a484d1861d13c8fe9df5bd575a67af8e"`
Sep 21 11:29:35.918 INFO blam! 6f40eba663caa6be7cadb250f52db4f0a484d1861d13c8fe9df5bd575a67af8e