Sep 20 21:44:46.026 INFO checking notbdu/rustbelt against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 20 21:44:46.026 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 20 21:44:46.026 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-7/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 20 21:44:46.313 INFO blam! 17e1de17b2051ca34892c7802aee03d9ef75b68ebb0f5144e7ffc342e744a088
Sep 20 21:44:46.315 INFO running `"docker" "start" "-a" "17e1de17b2051ca34892c7802aee03d9ef75b68ebb0f5144e7ffc342e744a088"`
Sep 20 21:44:47.279 INFO kablam! usermod: no changes
Sep 20 21:44:47.345 INFO kablam!     Checking bitflags v0.4.0
Sep 20 21:44:47.354 INFO kablam!     Checking bit_field v0.7.0
Sep 20 21:44:47.358 INFO kablam!     Checking volatile v0.1.0
Sep 20 21:44:47.358 INFO kablam!     Checking rlibc v1.0.0
Sep 20 21:44:47.358 INFO kablam!     Checking spin v0.4.6
Sep 20 21:44:47.742 INFO kablam!     Checking multiboot2 v0.1.0
Sep 20 21:44:48.114 INFO kablam! error[E0635]: unknown feature `const_atomic_usize_new`
Sep 20 21:44:48.114 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.6/src/lib.rs:8:76
Sep 20 21:44:48.114 INFO kablam!   |
Sep 20 21:44:48.114 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Sep 20 21:44:48.114 INFO kablam!   |                                                                            ^^^^^^^^^^^^^^^^^^^^^^
Sep 20 21:44:48.126 INFO kablam! 
Sep 20 21:44:48.126 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 20 21:44:48.126 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.6/src/lib.rs:8:53
Sep 20 21:44:48.126 INFO kablam!   |
Sep 20 21:44:48.126 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Sep 20 21:44:48.126 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Sep 20 21:44:48.126 INFO kablam! 
Sep 20 21:44:48.162 INFO kablam! error: aborting due to 2 previous errors
Sep 20 21:44:48.162 INFO kablam! 
Sep 20 21:44:48.162 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 20 21:44:48.174 INFO kablam! error: Could not compile `spin`.
Sep 20 21:44:48.174 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 20 21:44:48.264 INFO kablam! error: build failed
Sep 20 21:44:48.266 INFO kablam! su: No module specific data is present
Sep 20 21:44:49.305 INFO running `"docker" "rm" "-f" "17e1de17b2051ca34892c7802aee03d9ef75b68ebb0f5144e7ffc342e744a088"`
Sep 20 21:44:49.497 INFO blam! 17e1de17b2051ca34892c7802aee03d9ef75b68ebb0f5144e7ffc342e744a088