Aug 01 23:55:40.155 INFO checking runtime-fmt-0.3.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 23:55:40.155 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:55:40.155 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:55:40.155 INFO running `"docker" "create" "-v" "/tmp/crater.O3x9OY2GomA3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2+tmplazy:/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 23:55:40.360 INFO blam! c6a135e04ac550faf8978268151378c413270043eb23e486f00df1ca20bc6c74
Aug 01 23:55:40.363 INFO running `"docker" "start" "-a" "c6a135e04ac550faf8978268151378c413270043eb23e486f00df1ca20bc6c74"`
Aug 01 23:55:41.414 INFO kablam!     Checking runtime-fmt v0.3.0 (file:///source)
Aug 01 23:55:41.418 INFO kablam!    Compiling runtime-fmt-derive v0.2.0
Aug 01 23:55:41.930 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:55:41.930 INFO kablam!   --> src/lib.rs:17:1
Aug 01 23:55:41.930 INFO kablam!    |
Aug 01 23:55:41.930 INFO kablam! 17 | #![feature(fmt_internals)]
Aug 01 23:55:41.930 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:55:41.930 INFO kablam! 
Aug 01 23:55:41.930 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:55:41.930 INFO kablam!   --> src/lib.rs:18:1
Aug 01 23:55:41.930 INFO kablam!    |
Aug 01 23:55:41.930 INFO kablam! 18 | #![feature(conservative_impl_trait)]
Aug 01 23:55:41.930 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:55:41.930 INFO kablam! 
Aug 01 23:55:41.931 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:55:41.931 INFO kablam!   --> src/lib.rs:19:1
Aug 01 23:55:41.931 INFO kablam!    |
Aug 01 23:55:41.931 INFO kablam! 19 | #![feature(specialization)]
Aug 01 23:55:41.931 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:55:41.931 INFO kablam! 
Aug 01 23:55:41.931 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:55:41.931 INFO kablam!   --> src/lib.rs:20:1
Aug 01 23:55:41.931 INFO kablam!    |
Aug 01 23:55:41.931 INFO kablam! 20 | #![feature(print_internals)]
Aug 01 23:55:41.931 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:55:41.931 INFO kablam! 
Aug 01 23:55:41.931 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:55:41.931 INFO kablam!   --> src/lib.rs:21:1
Aug 01 23:55:41.932 INFO kablam!    |
Aug 01 23:55:41.932 INFO kablam! 21 | #![feature(rustc_private)]
Aug 01 23:55:41.932 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:55:41.932 INFO kablam! 
Aug 01 23:55:41.932 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:55:41.932 INFO kablam!   --> src/lib.rs:22:1
Aug 01 23:55:41.932 INFO kablam!    |
Aug 01 23:55:41.932 INFO kablam! 22 | #![feature(try_from)]
Aug 01 23:55:41.932 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:55:41.932 INFO kablam! 
Aug 01 23:55:41.938 INFO kablam! error: aborting due to 6 previous errors
Aug 01 23:55:41.938 INFO kablam! 
Aug 01 23:55:41.938 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:55:41.950 INFO kablam! error: Could not compile `runtime-fmt`.
Aug 01 23:55:41.950 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:55:46.450 INFO kablam! error: build failed
Aug 01 23:55:46.451 INFO kablam! su: No module specific data is present
Aug 01 23:55:47.089 INFO running `"docker" "rm" "-f" "c6a135e04ac550faf8978268151378c413270043eb23e486f00df1ca20bc6c74"`
Aug 01 23:55:47.273 INFO blam! c6a135e04ac550faf8978268151378c413270043eb23e486f00df1ca20bc6c74