Sep 10 03:08:15.142 INFO checking notbdu/rustbelt against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 03:08:15.143 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 03:08:15.143 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-7/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 03:08:15.354 INFO blam! 32b08fc707007498c59d3e3fece5c820878c22da6af3ca0fd4a8331d68d03fe2
Sep 10 03:08:15.356 INFO running `"docker" "start" "-a" "32b08fc707007498c59d3e3fece5c820878c22da6af3ca0fd4a8331d68d03fe2"`
Sep 10 03:08:16.466 INFO kablam! usermod: no changes
Sep 10 03:08:16.520 INFO kablam!     Checking bitflags v0.4.0
Sep 10 03:08:16.530 INFO kablam!     Checking bit_field v0.7.0
Sep 10 03:08:16.530 INFO kablam!     Checking rlibc v1.0.0
Sep 10 03:08:16.530 INFO kablam!     Checking volatile v0.1.0
Sep 10 03:08:16.530 INFO kablam!     Checking spin v0.4.6
Sep 10 03:08:16.795 INFO kablam!     Checking multiboot2 v0.1.0
Sep 10 03:08:17.021 INFO kablam! error[E0635]: unknown feature `const_atomic_usize_new`
Sep 10 03:08:17.021 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.6/src/lib.rs:8:76
Sep 10 03:08:17.021 INFO kablam!   |
Sep 10 03:08:17.021 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Sep 10 03:08:17.021 INFO kablam!   |                                                                            ^^^^^^^^^^^^^^^^^^^^^^
Sep 10 03:08:17.028 INFO kablam! 
Sep 10 03:08:17.028 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 10 03:08:17.028 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.6/src/lib.rs:8:53
Sep 10 03:08:17.028 INFO kablam!   |
Sep 10 03:08:17.028 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Sep 10 03:08:17.028 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Sep 10 03:08:17.028 INFO kablam! 
Sep 10 03:08:17.045 INFO kablam! error: aborting due to 2 previous errors
Sep 10 03:08:17.054 INFO kablam! 
Sep 10 03:08:17.054 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 10 03:08:17.062 INFO kablam! error: Could not compile `spin`.
Sep 10 03:08:17.062 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 03:08:17.335 INFO kablam! error: build failed
Sep 10 03:08:17.336 INFO kablam! su: No module specific data is present
Sep 10 03:08:18.183 INFO running `"docker" "rm" "-f" "32b08fc707007498c59d3e3fece5c820878c22da6af3ca0fd4a8331d68d03fe2"`
Sep 10 03:08:18.286 INFO blam! 32b08fc707007498c59d3e3fece5c820878c22da6af3ca0fd4a8331d68d03fe2