Aug 02 05:52:16.803 INFO checking lamport_signature-0.1.4 against 1.27.2 for lazy_static-1
Aug 02 05:52:16.803 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:52:16.803 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:52:16.803 INFO running `"docker" "create" "-v" "/tmp/crater.NOOWGBtsYqqW:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2:/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 05:52:17.064 INFO blam! dbc01b81ac45af192e88b01c791ed2fd25a0f2fe7e37be602e04f23035c07863
Aug 02 05:52:17.066 INFO running `"docker" "start" "-a" "dbc01b81ac45af192e88b01c791ed2fd25a0f2fe7e37be602e04f23035c07863"`
Aug 02 05:52:18.432 INFO kablam!     Checking block-buffer v0.2.0-tmp
Aug 02 05:52:18.436 INFO kablam!     Checking whirlpool v0.7.1
Aug 02 05:52:18.437 INFO kablam!     Checking lamport_signature v0.1.4 (file:///source)
Aug 02 05:52:19.713 INFO kablam!     Checking groestl v0.7.0
Aug 02 05:52:19.939 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:52:19.939 INFO kablam!   --> src/lib.rs:21:1
Aug 02 05:52:19.939 INFO kablam!    |
Aug 02 05:52:19.939 INFO kablam! 21 | #![feature(test, iterator_flatten)]
Aug 02 05:52:19.939 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 05:52:19.939 INFO kablam! 
Aug 02 05:52:19.941 INFO kablam! error: aborting due to previous error
Aug 02 05:52:19.941 INFO kablam! 
Aug 02 05:52:19.941 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:52:19.965 INFO kablam! error: Could not compile `lamport_signature`.
Aug 02 05:52:19.966 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 05:52:21.379 INFO kablam! error: build failed
Aug 02 05:52:21.381 INFO kablam! su: No module specific data is present
Aug 02 05:52:22.103 INFO running `"docker" "rm" "-f" "dbc01b81ac45af192e88b01c791ed2fd25a0f2fe7e37be602e04f23035c07863"`
Aug 02 05:52:22.224 INFO blam! dbc01b81ac45af192e88b01c791ed2fd25a0f2fe7e37be602e04f23035c07863