Aug 02 12:27:28.531 INFO checking const-concat-0.1.0 against 1.27.2 for lazy_static-1
Aug 02 12:27:28.531 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:27:28.531 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:27:28.531 INFO running `"docker" "create" "-v" "/tmp/crater.mls4DGPRdWD5:/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 12:27:28.742 INFO blam! 912664aa23da76915bdb67c47c7d23f6fececcf2383b99d3e314dcfdddc4e583
Aug 02 12:27:28.744 INFO running `"docker" "start" "-a" "912664aa23da76915bdb67c47c7d23f6fececcf2383b99d3e314dcfdddc4e583"`
Aug 02 12:27:30.037 INFO kablam!     Checking const-concat v0.1.0 (file:///source)
Aug 02 12:27:30.568 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:27:30.568 INFO kablam!  --> src/lib.rs:1:1
Aug 02 12:27:30.568 INFO kablam!   |
Aug 02 12:27:30.568 INFO kablam! 1 | #![feature(const_fn, const_str_as_bytes, const_str_len, const_let, untagged_unions)]
Aug 02 12:27:30.568 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:27:30.568 INFO kablam! 
Aug 02 12:27:30.568 INFO kablam! error: aborting due to previous error
Aug 02 12:27:30.568 INFO kablam! 
Aug 02 12:27:30.568 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:27:30.572 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:27:30.572 INFO kablam!  --> src/lib.rs:1:1
Aug 02 12:27:30.572 INFO kablam!   |
Aug 02 12:27:30.572 INFO kablam! 1 | #![feature(const_fn, const_str_as_bytes, const_str_len, const_let, untagged_unions)]
Aug 02 12:27:30.572 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:27:30.572 INFO kablam! 
Aug 02 12:27:30.575 INFO kablam! error: Could not compile `const-concat`.
Aug 02 12:27:30.575 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 12:27:30.575 INFO kablam! error: aborting due to previous error
Aug 02 12:27:30.576 INFO kablam! 
Aug 02 12:27:30.576 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:27:30.579 INFO kablam! error: Could not compile `const-concat`.
Aug 02 12:27:30.579 INFO kablam! 
Aug 02 12:27:30.579 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 12:27:30.580 INFO kablam! su: No module specific data is present
Aug 02 12:27:31.254 INFO running `"docker" "rm" "-f" "912664aa23da76915bdb67c47c7d23f6fececcf2383b99d3e314dcfdddc4e583"`
Aug 02 12:27:31.382 INFO blam! 912664aa23da76915bdb67c47c7d23f6fececcf2383b99d3e314dcfdddc4e583