Sep 10 08:58:43.308 INFO checking stm32f303x-memory-map-0.1.1 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 08:58:43.308 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 08:58:43.308 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-6/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 08:58:43.515 INFO blam! 1e4186fe135db6287bd189d6cb753cc00a6e297f82be3a9eb68897e6286ad84b
Sep 10 08:58:43.518 INFO running `"docker" "start" "-a" "1e4186fe135db6287bd189d6cb753cc00a6e297f82be3a9eb68897e6286ad84b"`
Sep 10 08:58:45.080 INFO kablam! usermod: no changes
Sep 10 08:58:45.152 INFO kablam!    Compiling cortex-m v0.2.12
Sep 10 08:58:45.162 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Sep 10 08:58:46.508 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 10 08:58:46.508 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Sep 10 08:58:46.508 INFO kablam!    |
Sep 10 08:58:46.509 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Sep 10 08:58:46.509 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Sep 10 08:58:46.514 INFO kablam! 
Sep 10 08:58:46.526 INFO kablam! error: aborting due to previous error
Sep 10 08:58:46.526 INFO kablam! 
Sep 10 08:58:46.526 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 10 08:58:46.529 INFO kablam! error: Could not compile `cortex-m`.
Sep 10 08:58:46.529 INFO kablam! 
Sep 10 08:58:46.529 INFO kablam! To learn more, run the command again with --verbose.
Sep 10 08:58:46.529 INFO kablam! su: No module specific data is present
Sep 10 08:58:47.751 INFO running `"docker" "rm" "-f" "1e4186fe135db6287bd189d6cb753cc00a6e297f82be3a9eb68897e6286ad84b"`
Sep 10 08:58:47.867 INFO blam! 1e4186fe135db6287bd189d6cb753cc00a6e297f82be3a9eb68897e6286ad84b