Sep 10 08:45:16.582 INFO checking stm32f429x-0.3.1 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 08:45:16.582 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 08:45:16.582 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-0/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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=1000" "-e" "CMD=cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 08:45:16.787 INFO blam! 7fe9a6447f575bb6fdad6ed3d77b35e501616ca48f8a28a09aae6cab50c15819
Sep 10 08:45:16.789 INFO running `"docker" "start" "-a" "7fe9a6447f575bb6fdad6ed3d77b35e501616ca48f8a28a09aae6cab50c15819"`
Sep 10 08:45:18.217 INFO kablam! usermod: no changes
Sep 10 08:45:18.302 INFO kablam!    Compiling cortex-m v0.2.12
Sep 10 08:45:18.314 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Sep 10 08:45:19.703 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 10 08:45:19.703 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Sep 10 08:45:19.703 INFO kablam!    |
Sep 10 08:45:19.703 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Sep 10 08:45:19.703 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Sep 10 08:45:19.703 INFO kablam! 
Sep 10 08:45:19.716 INFO kablam! error: aborting due to previous error
Sep 10 08:45:19.716 INFO kablam! 
Sep 10 08:45:19.716 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 10 08:45:19.723 INFO kablam! error: Could not compile `cortex-m`.
Sep 10 08:45:19.724 INFO kablam! 
Sep 10 08:45:19.724 INFO kablam! To learn more, run the command again with --verbose.
Sep 10 08:45:19.725 INFO kablam! su: No module specific data is present
Sep 10 08:45:21.560 INFO running `"docker" "rm" "-f" "7fe9a6447f575bb6fdad6ed3d77b35e501616ca48f8a28a09aae6cab50c15819"`
Sep 10 08:45:21.706 INFO blam! 7fe9a6447f575bb6fdad6ed3d77b35e501616ca48f8a28a09aae6cab50c15819