Aug 02 12:31:51.865 INFO checking concurrent-hashmap-0.2.2 against 1.27.2+tmplazy for lazy_static-1
Aug 02 12:31:51.866 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:31:51.866 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:31:51.866 INFO running `"docker" "create" "-v" "/tmp/crater.nsQxCwgzBZTH:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2+tmplazy:/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" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 02 12:31:52.107 INFO blam! ccb1894ecd1bb17172c48487575e920849bedc607e136d69a775d9a122473778
Aug 02 12:31:52.109 INFO running `"docker" "start" "-a" "ccb1894ecd1bb17172c48487575e920849bedc607e136d69a775d9a122473778"`
Aug 02 12:31:53.727 INFO kablam!     Checking spin v0.4.8
Aug 02 12:31:53.929 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:31:53.929 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.8/src/lib.rs:6:30
Aug 02 12:31:53.929 INFO kablam!   |
Aug 02 12:31:53.929 INFO kablam! 6 | #![cfg_attr(feature = "asm", feature(asm))]
Aug 02 12:31:53.929 INFO kablam!   |                              ^^^^^^^^^^^^^
Aug 02 12:31:53.929 INFO kablam! 
Aug 02 12:31:53.930 INFO kablam! error: aborting due to previous error
Aug 02 12:31:53.930 INFO kablam! 
Aug 02 12:31:53.930 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:31:53.935 INFO kablam! error: Could not compile `spin`.
Aug 02 12:31:53.935 INFO kablam! 
Aug 02 12:31:53.935 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 12:31:53.938 INFO kablam! su: No module specific data is present
Aug 02 12:31:54.542 INFO running `"docker" "rm" "-f" "ccb1894ecd1bb17172c48487575e920849bedc607e136d69a775d9a122473778"`
Aug 02 12:31:54.688 INFO blam! ccb1894ecd1bb17172c48487575e920849bedc607e136d69a775d9a122473778