Aug 02 03:21:51.824 INFO checking null-terminated-0.3.1 against 1.27.2 for lazy_static-1
Aug 02 03:21:51.824 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:21:51.824 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:21:51.825 INFO running `"docker" "create" "-v" "/tmp/crater.HauEyIfaalVx:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2:/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 03:21:52.074 INFO blam! 876899b6c65bc4f1ad0dfc5c59f8726f781c29e8d95dba84a0c0e91ba22e48dc
Aug 02 03:21:52.077 INFO running `"docker" "start" "-a" "876899b6c65bc4f1ad0dfc5c59f8726f781c29e8d95dba84a0c0e91ba22e48dc"`
Aug 02 03:21:53.046 INFO kablam!     Checking null-terminated v0.3.1 (file:///source)
Aug 02 03:21:53.046 INFO kablam!    Compiling env_logger v0.5.11
Aug 02 03:21:53.394 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:21:53.394 INFO kablam!  --> src/lib.rs:5:1
Aug 02 03:21:53.394 INFO kablam!   |
Aug 02 03:21:53.394 INFO kablam! 5 | #![feature(const_fn)]
Aug 02 03:21:53.394 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:21:53.400 INFO kablam! 
Aug 02 03:21:53.401 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:21:53.401 INFO kablam!  --> src/lib.rs:6:1
Aug 02 03:21:53.401 INFO kablam!   |
Aug 02 03:21:53.401 INFO kablam! 6 | #![feature(extern_types)]
Aug 02 03:21:53.401 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:21:53.401 INFO kablam! 
Aug 02 03:21:53.401 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:21:53.401 INFO kablam!  --> src/lib.rs:7:1
Aug 02 03:21:53.401 INFO kablam!   |
Aug 02 03:21:53.401 INFO kablam! 7 | #![feature(untagged_unions)]
Aug 02 03:21:53.401 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:21:53.401 INFO kablam! 
Aug 02 03:21:53.402 INFO kablam! error: aborting due to 3 previous errors
Aug 02 03:21:53.402 INFO kablam! 
Aug 02 03:21:53.402 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 03:21:53.406 INFO kablam! error: Could not compile `null-terminated`.
Aug 02 03:21:53.407 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 03:21:56.546 INFO kablam! error: build failed
Aug 02 03:21:56.548 INFO kablam! su: No module specific data is present
Aug 02 03:21:57.337 INFO running `"docker" "rm" "-f" "876899b6c65bc4f1ad0dfc5c59f8726f781c29e8d95dba84a0c0e91ba22e48dc"`
Aug 02 03:21:57.522 INFO blam! 876899b6c65bc4f1ad0dfc5c59f8726f781c29e8d95dba84a0c0e91ba22e48dc