Aug 17 16:59:31.558 INFO checking mkw41z-0.1.2 against try#a5d98b025f62ace80fe9d2a15781f900fc42515e for pr-53426
Aug 17 16:59:31.559 INFO running: cargo +a5d98b025f62ace80fe9d2a15781f900fc42515e-alt check --frozen --all --all-targets
Aug 17 16:59:31.559 INFO creating container for: cargo +a5d98b025f62ace80fe9d2a15781f900fc42515e-alt check --frozen --all --all-targets
Aug 17 16:59:31.560 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-53426/try#a5d98b025f62ace80fe9d2a15781f900fc42515e:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53426/worker-5/try#a5d98b025f62ace80fe9d2a15781f900fc42515e:/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 +a5d98b025f62ace80fe9d2a15781f900fc42515e-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 17 16:59:31.874 INFO blam! 7e4c5fcaf4fc876dbc7a8ea55d2f2600bc71d1bb413d245df6d23675afb0bf3a
Aug 17 16:59:31.877 INFO running `"docker" "start" "-a" "7e4c5fcaf4fc876dbc7a8ea55d2f2600bc71d1bb413d245df6d23675afb0bf3a"`
Aug 17 16:59:33.248 INFO kablam!     Checking bare-metal v0.1.2
Aug 17 16:59:33.476 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 17 16:59:33.476 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:53
Aug 17 16:59:33.476 INFO kablam!   |
Aug 17 16:59:33.476 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 17 16:59:33.476 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Aug 17 16:59:33.476 INFO kablam! 
Aug 17 16:59:33.477 INFO kablam! error: aborting due to previous error
Aug 17 16:59:33.477 INFO kablam! 
Aug 17 16:59:33.477 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 17 16:59:33.484 INFO kablam! error: Could not compile `bare-metal`.
Aug 17 16:59:33.484 INFO kablam! 
Aug 17 16:59:33.484 INFO kablam! To learn more, run the command again with --verbose.
Aug 17 16:59:33.486 INFO kablam! su: No module specific data is present
Aug 17 16:59:33.949 INFO running `"docker" "rm" "-f" "7e4c5fcaf4fc876dbc7a8ea55d2f2600bc71d1bb413d245df6d23675afb0bf3a"`
Aug 17 16:59:34.118 INFO blam! 7e4c5fcaf4fc876dbc7a8ea55d2f2600bc71d1bb413d245df6d23675afb0bf3a