Sep 10 19:49:57.247 INFO checking efm32gg-stk3700-0.1.0 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 19:49:57.247 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 19:49:57.247 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-6/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 19:49:57.446 INFO blam! cb1b58059e2d9898fca548f0f79bc01bc1b47be59038bdcfc8b2595229a65d52
Sep 10 19:49:57.448 INFO running `"docker" "start" "-a" "cb1b58059e2d9898fca548f0f79bc01bc1b47be59038bdcfc8b2595229a65d52"`
Sep 10 19:49:58.702 INFO kablam! usermod: no changes
Sep 10 19:49:58.838 INFO kablam!    Compiling rand_core v0.2.1
Sep 10 19:49:58.838 INFO kablam!    Compiling cortex-m-rt v0.6.3
Sep 10 19:49:58.838 INFO kablam!     Checking efm32gg990 v0.1.2
Sep 10 19:49:58.838 INFO kablam!     Checking panic-semihosting v0.2.0
Sep 10 19:49:59.470 INFO kablam!    Compiling rand v0.5.5
Sep 10 19:49:59.514 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 10 19:49:59.514 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.2.0/src/lib.rs:67:1
Sep 10 19:49:59.514 INFO kablam!    |
Sep 10 19:49:59.514 INFO kablam! 67 | #[lang = "panic_fmt"]
Sep 10 19:49:59.514 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 10 19:49:59.514 INFO kablam! 
Sep 10 19:49:59.578 INFO kablam! error: aborting due to previous error
Sep 10 19:49:59.588 INFO kablam! 
Sep 10 19:49:59.588 INFO kablam! For more information about this error, try `rustc --explain E0522`.
Sep 10 19:49:59.596 INFO kablam! error: Could not compile `panic-semihosting`.
Sep 10 19:49:59.596 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 19:54:59.551 INFO error running command: process killed after not generating output for  300s
Sep 10 19:54:59.551 INFO running `"docker" "rm" "-f" "cb1b58059e2d9898fca548f0f79bc01bc1b47be59038bdcfc8b2595229a65d52"`
Sep 10 19:55:01.192 INFO blam! cb1b58059e2d9898fca548f0f79bc01bc1b47be59038bdcfc8b2595229a65d52