Aug 01 20:23:26.848 INFO checking tiny-secp256k1-0.1.0 against 1.27.2 for lazy_static-1
Aug 01 20:23:26.848 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:23:26.848 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:23:26.849 INFO running `"docker" "create" "-v" "/tmp/crater.BZvSMBTTcQ22:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2:/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 01 20:23:27.058 INFO blam! 0714ece1a569e766ab79a00b1dc1acb24315167bc64addb8584a6f3cbb208f44
Aug 01 20:23:27.061 INFO running `"docker" "start" "-a" "0714ece1a569e766ab79a00b1dc1acb24315167bc64addb8584a6f3cbb208f44"`
Aug 01 20:23:28.131 INFO kablam!     Checking tiny-secp256k1 v0.1.0 (file:///source)
Aug 01 20:23:28.132 INFO kablam!    Compiling secp256k1 v0.6.3
Aug 01 20:23:30.232 INFO kablam! warning: unused return value of `core::ops::Mul::mul` which must be used
Aug 01 20:23:30.232 INFO kablam!    --> src/big_num.rs:281:4
Aug 01 20:23:30.233 INFO kablam!     |
Aug 01 20:23:30.233 INFO kablam! 281 |             self.mul(rhs.words[0]);
Aug 01 20:23:30.233 INFO kablam!     |             ^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 20:23:30.233 INFO kablam!     |
Aug 01 20:23:30.233 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Aug 01 20:23:30.233 INFO kablam! 
Aug 01 20:23:33.789 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:23:33.789 INFO kablam!  --> benches/lib.rs:1:1
Aug 01 20:23:33.789 INFO kablam!   |
Aug 01 20:23:33.789 INFO kablam! 1 | #![feature(test)]
Aug 01 20:23:33.789 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 20:23:33.789 INFO kablam! 
Aug 01 20:23:33.789 INFO kablam! error: aborting due to previous error
Aug 01 20:23:33.789 INFO kablam! 
Aug 01 20:23:33.789 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:23:33.793 INFO kablam! error: Could not compile `tiny-secp256k1`.
Aug 01 20:23:33.793 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 20:23:34.713 INFO kablam! warning: unused return value of `core::ops::Mul::mul` which must be used
Aug 01 20:23:34.713 INFO kablam!    --> src/big_num.rs:281:4
Aug 01 20:23:34.714 INFO kablam!     |
Aug 01 20:23:34.714 INFO kablam! 281 |             self.mul(rhs.words[0]);
Aug 01 20:23:34.714 INFO kablam!     |             ^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 20:23:34.714 INFO kablam!     |
Aug 01 20:23:34.714 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Aug 01 20:23:34.714 INFO kablam! 
Aug 01 20:23:34.763 INFO kablam! error: build failed
Aug 01 20:23:34.765 INFO kablam! su: No module specific data is present
Aug 01 20:23:35.526 INFO running `"docker" "rm" "-f" "0714ece1a569e766ab79a00b1dc1acb24315167bc64addb8584a6f3cbb208f44"`
Aug 01 20:23:35.663 INFO blam! 0714ece1a569e766ab79a00b1dc1acb24315167bc64addb8584a6f3cbb208f44