Sep 06 07:38:49.618 INFO checking efm32gg-stk3700-0.1.0 against try#51ff957df5095d92d1d3d4682207ee8b7ad408a8 for pr-53854
Sep 06 07:38:49.618 INFO running: cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets
Sep 06 07:38:49.618 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-53854/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-5/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/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 +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 07:38:49.875 INFO blam! 553a8308257fe3bf017ec76143f423764154f7ac9b5d5ce07943f4507d60848d
Sep 06 07:38:49.876 INFO running `"docker" "start" "-a" "553a8308257fe3bf017ec76143f423764154f7ac9b5d5ce07943f4507d60848d"`
Sep 06 07:38:52.042 INFO kablam! usermod: no changes
Sep 06 07:38:52.154 INFO kablam!    Compiling cortex-m-rt v0.5.3
Sep 06 07:38:52.154 INFO kablam!     Checking efm32gg990 v0.1.2
Sep 06 07:38:52.154 INFO kablam!     Checking panic-semihosting v0.2.0
Sep 06 07:38:52.642 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 06 07:38:52.642 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.2.0/src/lib.rs:67:1
Sep 06 07:38:52.642 INFO kablam!    |
Sep 06 07:38:52.642 INFO kablam! 67 | #[lang = "panic_fmt"]
Sep 06 07:38:52.642 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 06 07:38:52.642 INFO kablam! 
Sep 06 07:38:52.670 INFO kablam! error: aborting due to previous error
Sep 06 07:38:52.670 INFO kablam! 
Sep 06 07:38:52.670 INFO kablam! For more information about this error, try `rustc --explain E0522`.
Sep 06 07:38:52.670 INFO kablam! error: Could not compile `panic-semihosting`.
Sep 06 07:38:52.670 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 06 07:39:45.565 INFO kablam! error: build failed
Sep 06 07:39:45.567 INFO kablam! su: No module specific data is present
Sep 06 07:39:46.035 INFO running `"docker" "rm" "-f" "553a8308257fe3bf017ec76143f423764154f7ac9b5d5ce07943f4507d60848d"`
Sep 06 07:39:46.162 INFO blam! 553a8308257fe3bf017ec76143f423764154f7ac9b5d5ce07943f4507d60848d