Sep 01 00:08:01.478 INFO checking SimonSapin/rust-on-bbc-microbit against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 00:08:01.478 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 00:08:01.478 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-1/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 00:08:01.718 INFO blam! 9b7cd86b81337f158368a050692ebc26c961b976de9da0d810bd314e063c152f
Sep 01 00:08:01.720 INFO running `"docker" "start" "-a" "9b7cd86b81337f158368a050692ebc26c961b976de9da0d810bd314e063c152f"`
Sep 01 00:08:02.586 INFO kablam!     Checking rust-on-bbc-microbit v0.1.0 (file:///source)
Sep 01 00:08:02.662 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 01 00:08:02.662 INFO kablam!   --> src/lib.rs:29:1
Sep 01 00:08:02.662 INFO kablam!    |
Sep 01 00:08:02.662 INFO kablam! 29 | #[lang = "panic_fmt"]
Sep 01 00:08:02.662 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 01 00:08:02.662 INFO kablam! 
Sep 01 00:08:02.662 INFO kablam! error: `#[panic_handler]` function required, but not found
Sep 01 00:08:02.662 INFO kablam! 
Sep 01 00:08:02.775 INFO kablam! error: aborting due to 2 previous errors
Sep 01 00:08:02.775 INFO kablam! 
Sep 01 00:08:02.775 INFO kablam! For more information about this error, try `rustc --explain E0522`.
Sep 01 00:08:02.779 INFO kablam! error: Could not compile `rust-on-bbc-microbit`.
Sep 01 00:08:02.779 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 01 00:08:02.852 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 01 00:08:02.852 INFO kablam!   --> src/lib.rs:29:1
Sep 01 00:08:02.852 INFO kablam!    |
Sep 01 00:08:02.852 INFO kablam! 29 | #[lang = "panic_fmt"]
Sep 01 00:08:02.852 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 01 00:08:02.853 INFO kablam! 
Sep 01 00:08:02.853 INFO kablam! error[E0152]: duplicate lang item found: `eh_personality`.
Sep 01 00:08:02.853 INFO kablam!   --> src/lib.rs:44:1
Sep 01 00:08:02.853 INFO kablam!    |
Sep 01 00:08:02.853 INFO kablam! 44 | extern fn eh_personality() {}
Sep 01 00:08:02.853 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 01 00:08:02.853 INFO kablam!    |
Sep 01 00:08:02.853 INFO kablam!    = note: first defined in crate `panic_unwind`.
Sep 01 00:08:02.853 INFO kablam! 
Sep 01 00:08:02.992 INFO kablam! error: aborting due to 2 previous errors
Sep 01 00:08:02.992 INFO kablam! 
Sep 01 00:08:02.992 INFO kablam! Some errors occurred: E0152, E0522.
Sep 01 00:08:02.992 INFO kablam! For more information about an error, try `rustc --explain E0152`.
Sep 01 00:08:02.998 INFO kablam! error: Could not compile `rust-on-bbc-microbit`.
Sep 01 00:08:02.998 INFO kablam! 
Sep 01 00:08:02.998 INFO kablam! To learn more, run the command again with --verbose.
Sep 01 00:08:03.000 INFO kablam! su: No module specific data is present
Sep 01 00:08:03.351 INFO running `"docker" "rm" "-f" "9b7cd86b81337f158368a050692ebc26c961b976de9da0d810bd314e063c152f"`
Sep 01 00:08:03.477 INFO blam! 9b7cd86b81337f158368a050692ebc26c961b976de9da0d810bd314e063c152f