Sep 10 05:10:42.505 INFO checking SimonSapin/rust-on-bbc-microbit against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 05:10:42.505 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 05:10:42.505 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-7/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 05:10:42.746 INFO blam! f12fae07de69e2b8e04d8089926eac5312f96571895ed8b64d2ec778a294077b
Sep 10 05:10:42.748 INFO running `"docker" "start" "-a" "f12fae07de69e2b8e04d8089926eac5312f96571895ed8b64d2ec778a294077b"`
Sep 10 05:10:44.077 INFO kablam! usermod: no changes
Sep 10 05:10:44.118 INFO kablam!     Checking rust-on-bbc-microbit v0.1.0 (file:///source)
Sep 10 05:10:44.320 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 10 05:10:44.320 INFO kablam!   --> src/lib.rs:29:1
Sep 10 05:10:44.320 INFO kablam!    |
Sep 10 05:10:44.320 INFO kablam! 29 | #[lang = "panic_fmt"]
Sep 10 05:10:44.320 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 10 05:10:44.320 INFO kablam! 
Sep 10 05:10:44.320 INFO kablam! error: `#[panic_handler]` function required, but not found
Sep 10 05:10:44.320 INFO kablam! 
Sep 10 05:10:44.443 INFO kablam! error: aborting due to 2 previous errors
Sep 10 05:10:44.443 INFO kablam! 
Sep 10 05:10:44.443 INFO kablam! For more information about this error, try `rustc --explain E0522`.
Sep 10 05:10:44.449 INFO kablam! error: Could not compile `rust-on-bbc-microbit`.
Sep 10 05:10:44.449 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 05:10:44.485 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 10 05:10:44.485 INFO kablam!   --> src/lib.rs:29:1
Sep 10 05:10:44.485 INFO kablam!    |
Sep 10 05:10:44.485 INFO kablam! 29 | #[lang = "panic_fmt"]
Sep 10 05:10:44.485 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 10 05:10:44.485 INFO kablam! 
Sep 10 05:10:44.485 INFO kablam! error[E0152]: duplicate lang item found: `eh_personality`.
Sep 10 05:10:44.485 INFO kablam!   --> src/lib.rs:44:1
Sep 10 05:10:44.485 INFO kablam!    |
Sep 10 05:10:44.485 INFO kablam! 44 | extern fn eh_personality() {}
Sep 10 05:10:44.485 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 05:10:44.485 INFO kablam!    |
Sep 10 05:10:44.485 INFO kablam!    = note: first defined in crate `panic_unwind`.
Sep 10 05:10:44.485 INFO kablam! 
Sep 10 05:10:44.586 INFO kablam! error: aborting due to 2 previous errors
Sep 10 05:10:44.586 INFO kablam! 
Sep 10 05:10:44.586 INFO kablam! Some errors occurred: E0152, E0522.
Sep 10 05:10:44.586 INFO kablam! For more information about an error, try `rustc --explain E0152`.
Sep 10 05:10:44.591 INFO kablam! error: Could not compile `rust-on-bbc-microbit`.
Sep 10 05:10:44.591 INFO kablam! 
Sep 10 05:10:44.591 INFO kablam! To learn more, run the command again with --verbose.
Sep 10 05:10:44.598 INFO kablam! su: No module specific data is present
Sep 10 05:10:46.138 INFO running `"docker" "rm" "-f" "f12fae07de69e2b8e04d8089926eac5312f96571895ed8b64d2ec778a294077b"`
Sep 10 05:10:46.250 INFO blam! f12fae07de69e2b8e04d8089926eac5312f96571895ed8b64d2ec778a294077b