Aug 31 12:35:20.733 INFO checking stm32f100xx-0.4.0 against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Aug 31 12:35:20.733 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Aug 31 12:35:20.733 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-2/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/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" "-e" "USER_ID=500" "-e" "CMD=cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 12:35:20.951 INFO blam! b5ec31e7f10976c5b166cab7f4f43025ae981070f5e68ad0e3d88657e855a4f8
Aug 31 12:35:20.953 INFO running `"docker" "start" "-a" "b5ec31e7f10976c5b166cab7f4f43025ae981070f5e68ad0e3d88657e855a4f8"`
Aug 31 12:35:21.587 INFO kablam!    Compiling cortex-m v0.2.12
Aug 31 12:35:21.587 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Aug 31 12:35:22.809 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 31 12:35:22.809 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Aug 31 12:35:22.810 INFO kablam!    |
Aug 31 12:35:22.810 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Aug 31 12:35:22.810 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Aug 31 12:35:22.810 INFO kablam! 
Aug 31 12:35:22.827 INFO kablam! error: aborting due to previous error
Aug 31 12:35:22.827 INFO kablam! 
Aug 31 12:35:22.827 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 31 12:35:22.833 INFO kablam! error: Could not compile `cortex-m`.
Aug 31 12:35:22.833 INFO kablam! 
Aug 31 12:35:22.833 INFO kablam! To learn more, run the command again with --verbose.
Aug 31 12:35:22.835 INFO kablam! su: No module specific data is present
Aug 31 12:35:23.249 INFO running `"docker" "rm" "-f" "b5ec31e7f10976c5b166cab7f4f43025ae981070f5e68ad0e3d88657e855a4f8"`
Aug 31 12:35:23.371 INFO blam! b5ec31e7f10976c5b166cab7f4f43025ae981070f5e68ad0e3d88657e855a4f8