Sep 14 08:25:54.547 INFO checking stm32f100xx-0.4.0 against try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0 for pr-53578-1
Sep 14 08:25:54.547 INFO running: cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets
Sep 14 08:25:54.547 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53578-1/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-3/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/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 +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 08:25:55.013 INFO blam! 6765e56cd9068c525c2aa7f0bc1b4e76d3dc337f22665105166e1a0d5863edb6
Sep 14 08:25:55.015 INFO running `"docker" "start" "-a" "6765e56cd9068c525c2aa7f0bc1b4e76d3dc337f22665105166e1a0d5863edb6"`
Sep 14 08:25:56.645 INFO kablam! usermod: no changes
Sep 14 08:25:56.796 INFO kablam!    Compiling cortex-m v0.2.12
Sep 14 08:25:56.796 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Sep 14 08:25:58.107 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 14 08:25:58.107 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Sep 14 08:25:58.107 INFO kablam!    |
Sep 14 08:25:58.107 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Sep 14 08:25:58.107 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Sep 14 08:25:58.107 INFO kablam! 
Sep 14 08:25:58.121 INFO kablam! error: aborting due to previous error
Sep 14 08:25:58.121 INFO kablam! 
Sep 14 08:25:58.121 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 14 08:25:58.128 INFO kablam! error: Could not compile `cortex-m`.
Sep 14 08:25:58.128 INFO kablam! 
Sep 14 08:25:58.128 INFO kablam! To learn more, run the command again with --verbose.
Sep 14 08:25:58.129 INFO kablam! su: No module specific data is present
Sep 14 08:25:59.641 INFO running `"docker" "rm" "-f" "6765e56cd9068c525c2aa7f0bc1b4e76d3dc337f22665105166e1a0d5863edb6"`
Sep 14 08:25:59.903 INFO blam! 6765e56cd9068c525c2aa7f0bc1b4e76d3dc337f22665105166e1a0d5863edb6