Sep 14 17:12:47.436 INFO checking efm32gg-stk3700-0.1.0 against try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0 for pr-53578-1
Sep 14 17:12:47.436 INFO running: cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets
Sep 14 17:12:47.436 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 17:12:47.880 INFO blam! f4e9d5df35d88048d6fc193202990c8db7bdcbbaf4e5c0e3d82c9d85f3ce094a
Sep 14 17:12:47.882 INFO running `"docker" "start" "-a" "f4e9d5df35d88048d6fc193202990c8db7bdcbbaf4e5c0e3d82c9d85f3ce094a"`
Sep 14 17:12:49.310 INFO kablam! usermod: no changes
Sep 14 17:12:49.531 INFO kablam!    Compiling cortex-m-rt v0.6.3
Sep 14 17:12:49.531 INFO kablam!     Checking nb v0.1.1
Sep 14 17:12:49.543 INFO kablam!     Checking efm32gg990 v0.1.2
Sep 14 17:12:49.543 INFO kablam!     Checking panic-semihosting v0.2.0
Sep 14 17:12:50.232 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 14 17:12:50.232 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.2.0/src/lib.rs:67:1
Sep 14 17:12:50.232 INFO kablam!    |
Sep 14 17:12:50.232 INFO kablam! 67 | #[lang = "panic_fmt"]
Sep 14 17:12:50.232 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 14 17:12:50.233 INFO kablam! 
Sep 14 17:12:50.275 INFO kablam! error: aborting due to previous error
Sep 14 17:12:50.287 INFO kablam! 
Sep 14 17:12:50.287 INFO kablam! For more information about this error, try `rustc --explain E0522`.
Sep 14 17:12:50.293 INFO kablam! error: Could not compile `panic-semihosting`.
Sep 14 17:12:50.294 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 14 17:13:48.395 INFO kablam! error: build failed
Sep 14 17:13:48.396 INFO kablam! su: No module specific data is present
Sep 14 17:13:48.989 INFO running `"docker" "rm" "-f" "f4e9d5df35d88048d6fc193202990c8db7bdcbbaf4e5c0e3d82c9d85f3ce094a"`
Sep 14 17:13:49.086 INFO blam! f4e9d5df35d88048d6fc193202990c8db7bdcbbaf4e5c0e3d82c9d85f3ce094a