Aug 18 01:12:37.895 INFO checking cortex-m-rt-0.3.15 against master#142bb27373126edf8367f526358b6c72ecf1d8df for pr-53426
Aug 18 01:12:37.895 INFO running: cargo +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets
Aug 18 01:12:37.896 INFO creating container for: cargo +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets
Aug 18 01:12:37.896 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53426/master#142bb27373126edf8367f526358b6c72ecf1d8df:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53426/worker-1/master#142bb27373126edf8367f526358b6c72ecf1d8df:/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 +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 18 01:12:38.185 INFO blam! 2431c7e2e27e56528db8403318bdd9caccb5a531a355c2c427c9eeaf64c976b0
Aug 18 01:12:38.205 INFO running `"docker" "start" "-a" "2431c7e2e27e56528db8403318bdd9caccb5a531a355c2c427c9eeaf64c976b0"`
Aug 18 01:12:39.311 INFO kablam!     Checking bare-metal v0.1.2
Aug 18 01:12:39.313 INFO kablam!    Compiling cortex-m v0.3.1
Aug 18 01:12:39.313 INFO kablam!    Compiling num-traits v0.2.5
Aug 18 01:12:39.854 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 18 01:12:39.854 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:53
Aug 18 01:12:39.854 INFO kablam!   |
Aug 18 01:12:39.854 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 18 01:12:39.854 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Aug 18 01:12:39.854 INFO kablam! 
Aug 18 01:12:39.856 INFO kablam! error: aborting due to previous error
Aug 18 01:12:39.856 INFO kablam! 
Aug 18 01:12:39.856 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 18 01:12:39.906 INFO kablam! error: Could not compile `bare-metal`.
Aug 18 01:12:39.906 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 18 01:12:45.277 INFO kablam! error: build failed
Aug 18 01:12:45.278 INFO kablam! su: No module specific data is present
Aug 18 01:12:45.819 INFO running `"docker" "rm" "-f" "2431c7e2e27e56528db8403318bdd9caccb5a531a355c2c427c9eeaf64c976b0"`
Aug 18 01:12:45.986 INFO blam! 2431c7e2e27e56528db8403318bdd9caccb5a531a355c2c427c9eeaf64c976b0