Sep 04 21:50:35.557 INFO checking efm32gg-stk3700-0.1.0 against master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8 for pr-53913
Sep 04 21:50:35.557 INFO running: cargo +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets
Sep 04 21:50:35.557 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53913/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-3/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/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 +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 21:50:35.698 INFO blam! 05c08ffd34b2944d0cbef9271e706da8f65198adaa44b0cedac22cab2bf48598
Sep 04 21:50:35.700 INFO running `"docker" "start" "-a" "05c08ffd34b2944d0cbef9271e706da8f65198adaa44b0cedac22cab2bf48598"`
Sep 04 21:50:36.251 INFO kablam!    Compiling cortex-m-rt v0.5.3
Sep 04 21:50:36.252 INFO kablam!     Checking efm32gg990 v0.1.2
Sep 04 21:50:36.252 INFO kablam!     Checking panic-semihosting v0.2.0
Sep 04 21:50:36.671 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 04 21:50:36.671 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.2.0/src/lib.rs:67:1
Sep 04 21:50:36.671 INFO kablam!    |
Sep 04 21:50:36.671 INFO kablam! 67 | #[lang = "panic_fmt"]
Sep 04 21:50:36.671 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 04 21:50:36.671 INFO kablam! 
Sep 04 21:50:36.698 INFO kablam! error: aborting due to previous error
Sep 04 21:50:36.698 INFO kablam! 
Sep 04 21:50:36.698 INFO kablam! For more information about this error, try `rustc --explain E0522`.
Sep 04 21:50:36.704 INFO kablam! error: Could not compile `panic-semihosting`.
Sep 04 21:50:36.704 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 21:51:46.874 INFO kablam! error: build failed
Sep 04 21:51:46.875 INFO kablam! su: No module specific data is present
Sep 04 21:51:47.302 INFO running `"docker" "rm" "-f" "05c08ffd34b2944d0cbef9271e706da8f65198adaa44b0cedac22cab2bf48598"`
Sep 04 21:51:47.382 INFO blam! 05c08ffd34b2944d0cbef9271e706da8f65198adaa44b0cedac22cab2bf48598