Aug 02 09:26:10.310 INFO checking gc-0.3.2 against 1.27.2 for lazy_static-1
Aug 02 09:26:10.310 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 09:26:10.310 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 09:26:10.310 INFO running `"docker" "create" "-v" "/tmp/crater.2aEBD1sVKKKk:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2:/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 09:26:10.543 INFO blam! fd2369e4469713758c921b2a0465d06e4ff0162c16c599fe5e563641ae8b3aca
Aug 02 09:26:10.544 INFO running `"docker" "start" "-a" "fd2369e4469713758c921b2a0465d06e4ff0162c16c599fe5e563641ae8b3aca"`
Aug 02 09:26:11.738 INFO kablam!     Checking gc v0.3.2 (file:///source)
Aug 02 09:26:11.738 INFO kablam!    Compiling gc_derive v0.3.2
Aug 02 09:26:16.696 INFO kablam! warning: unnecessary `unsafe` block
Aug 02 09:26:16.696 INFO kablam!    --> src/lib.rs:396:9
Aug 02 09:26:16.696 INFO kablam!     |
Aug 02 09:26:16.696 INFO kablam! 396 |         unsafe { self.cell.into_inner() }
Aug 02 09:26:16.696 INFO kablam!     |         ^^^^^^ unnecessary `unsafe` block
Aug 02 09:26:16.696 INFO kablam!     |
Aug 02 09:26:16.696 INFO kablam!     = note: #[warn(unused_unsafe)] on by default
Aug 02 09:26:16.696 INFO kablam! 
Aug 02 09:26:19.924 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 09:26:19.924 INFO kablam!  --> benches/alloc_in_a_loop.rs:1:1
Aug 02 09:26:19.924 INFO kablam!   |
Aug 02 09:26:19.924 INFO kablam! 1 | #![feature(test)]
Aug 02 09:26:19.925 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 09:26:19.937 INFO kablam! 
Aug 02 09:26:19.937 INFO kablam! error: aborting due to previous error
Aug 02 09:26:19.937 INFO kablam! 
Aug 02 09:26:19.937 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 09:26:19.965 INFO kablam! error: Could not compile `gc`.
Aug 02 09:26:19.966 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 09:26:23.162 INFO kablam! warning: unnecessary `unsafe` block
Aug 02 09:26:23.162 INFO kablam!    --> src/lib.rs:396:9
Aug 02 09:26:23.162 INFO kablam!     |
Aug 02 09:26:23.162 INFO kablam! 396 |         unsafe { self.cell.into_inner() }
Aug 02 09:26:23.162 INFO kablam!     |         ^^^^^^ unnecessary `unsafe` block
Aug 02 09:26:23.162 INFO kablam!     |
Aug 02 09:26:23.162 INFO kablam!     = note: #[warn(unused_unsafe)] on by default
Aug 02 09:26:23.162 INFO kablam! 
Aug 02 09:26:23.423 INFO kablam! error: build failed
Aug 02 09:26:23.425 INFO kablam! su: No module specific data is present
Aug 02 09:26:24.407 INFO running `"docker" "rm" "-f" "fd2369e4469713758c921b2a0465d06e4ff0162c16c599fe5e563641ae8b3aca"`
Aug 02 09:26:24.584 INFO blam! fd2369e4469713758c921b2a0465d06e4ff0162c16c599fe5e563641ae8b3aca