Aug 01 20:20:03.036 INFO checking tm4c123x-0.4.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 20:20:03.036 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:20:03.036 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:20:03.036 INFO running `"docker" "create" "-v" "/tmp/crater.VlgO4eMGU24O:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2+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 20:20:03.274 INFO blam! 20fe396eb79251eb3196325e7a2d2d3a37bcb6bf6b37d4d9b414f4c126143f87
Aug 01 20:20:03.276 INFO running `"docker" "start" "-a" "20fe396eb79251eb3196325e7a2d2d3a37bcb6bf6b37d4d9b414f4c126143f87"`
Aug 01 20:20:04.363 INFO kablam!    Compiling cortex-m v0.2.12
Aug 01 20:20:04.368 INFO kablam!     Checking vcell v0.1.0
Aug 01 20:20:04.370 INFO kablam!     Checking aligned v0.1.2
Aug 01 20:20:04.370 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Aug 01 20:20:05.071 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:20:05.071 INFO kablam!    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-semihosting-0.1.3/src/lib.rs:105:1
Aug 01 20:20:05.071 INFO kablam!     |
Aug 01 20:20:05.071 INFO kablam! 105 | #![feature(asm)]
Aug 01 20:20:05.071 INFO kablam!     | ^^^^^^^^^^^^^^^^
Aug 01 20:20:05.076 INFO kablam! 
Aug 01 20:20:05.097 INFO kablam! error: aborting due to previous error
Aug 01 20:20:05.097 INFO kablam! 
Aug 01 20:20:05.097 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:20:05.105 INFO kablam! error: Could not compile `cortex-m-semihosting`.
Aug 01 20:20:05.105 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 20:20:05.142 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:20:05.142 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Aug 01 20:20:05.142 INFO kablam!    |
Aug 01 20:20:05.142 INFO kablam! 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Aug 01 20:20:05.142 INFO kablam!    |                                   ^^^^^^^^^^^^^^^^^^
Aug 01 20:20:05.142 INFO kablam! 
Aug 01 20:20:05.144 INFO kablam! error: aborting due to previous error
Aug 01 20:20:05.144 INFO kablam! 
Aug 01 20:20:05.144 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:20:05.157 INFO kablam! error: Could not compile `aligned`.
Aug 01 20:20:05.157 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 20:20:06.104 INFO kablam! error: build failed
Aug 01 20:20:06.110 INFO kablam! su: No module specific data is present
Aug 01 20:20:06.934 INFO running `"docker" "rm" "-f" "20fe396eb79251eb3196325e7a2d2d3a37bcb6bf6b37d4d9b414f4c126143f87"`
Aug 01 20:20:07.121 INFO blam! 20fe396eb79251eb3196325e7a2d2d3a37bcb6bf6b37d4d9b414f4c126143f87