Aug 02 06:27:02.953 INFO checking is_prime-1.0.2 against 1.27.2 for lazy_static-1
Aug 02 06:27:02.953 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:27:02.953 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:27:02.953 INFO running `"docker" "create" "-v" "/tmp/crater.1hKMcHrY7H0v:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2:/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 06:27:03.214 INFO blam! 6c89e69a8ebd0146f2563143e66c7676227f9ccd181d474c57e4707de619126a
Aug 02 06:27:03.217 INFO running `"docker" "start" "-a" "6c89e69a8ebd0146f2563143e66c7676227f9ccd181d474c57e4707de619126a"`
Aug 02 06:27:04.098 INFO kablam!    Compiling rustc-cfg v0.2.0
Aug 02 06:27:04.098 INFO kablam!     Checking ieee754 v0.2.2
Aug 02 06:27:04.110 INFO kablam!    Compiling num-integer v0.1.39
Aug 02 06:27:08.224 INFO kablam!    Compiling num-bigint v0.1.44
Aug 02 06:27:15.017 INFO kablam!    Compiling ramp v0.3.13
Aug 02 06:27:19.269 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:27:19.269 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ramp-0.3.13/src/lib.rs:18:1
Aug 02 06:27:19.269 INFO kablam!    |
Aug 02 06:27:19.269 INFO kablam! 18 | #![feature(core_intrinsics, asm, allocator_api)]
Aug 02 06:27:19.269 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 06:27:19.269 INFO kablam! 
Aug 02 06:27:19.269 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:27:19.269 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ramp-0.3.13/src/lib.rs:19:1
Aug 02 06:27:19.269 INFO kablam!    |
Aug 02 06:27:19.269 INFO kablam! 19 | #![feature(step_trait, ptr_internals, alloc)]
Aug 02 06:27:19.269 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 06:27:19.269 INFO kablam! 
Aug 02 06:27:19.289 INFO kablam! error: aborting due to 2 previous errors
Aug 02 06:27:19.289 INFO kablam! 
Aug 02 06:27:19.289 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 06:27:19.301 INFO kablam! error: Could not compile `ramp`.
Aug 02 06:27:19.301 INFO kablam! 
Aug 02 06:27:19.301 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 06:27:19.307 INFO kablam! su: No module specific data is present
Aug 02 06:27:20.033 INFO running `"docker" "rm" "-f" "6c89e69a8ebd0146f2563143e66c7676227f9ccd181d474c57e4707de619126a"`
Aug 02 06:27:20.198 INFO blam! 6c89e69a8ebd0146f2563143e66c7676227f9ccd181d474c57e4707de619126a