Sep 01 00:08:00.823 INFO checking SimonSapin/rust-on-bbc-microbit against try#aa245a5862056b681d2ccdb178f58891108cd3a6 for pr-53831
Sep 01 00:08:00.823 INFO running: cargo +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets
Sep 01 00:08:00.823 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53831/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-0/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/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 +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 00:08:01.127 INFO blam! b4131a1d09e363c90898e3ef0c12e902c93fb0d4a657e2d545b769701998fa95
Sep 01 00:08:01.129 INFO running `"docker" "start" "-a" "b4131a1d09e363c90898e3ef0c12e902c93fb0d4a657e2d545b769701998fa95"`
Sep 01 00:08:02.134 INFO kablam!     Checking rust-on-bbc-microbit v0.1.0 (file:///source)
Sep 01 00:08:02.224 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 01 00:08:02.224 INFO kablam!   --> src/lib.rs:29:1
Sep 01 00:08:02.224 INFO kablam!    |
Sep 01 00:08:02.224 INFO kablam! 29 | #[lang = "panic_fmt"]
Sep 01 00:08:02.224 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 01 00:08:02.225 INFO kablam! 
Sep 01 00:08:02.225 INFO kablam! error: `#[panic_handler]` function required, but not found
Sep 01 00:08:02.225 INFO kablam! 
Sep 01 00:08:02.386 INFO kablam! error: aborting due to 2 previous errors
Sep 01 00:08:02.387 INFO kablam! 
Sep 01 00:08:02.387 INFO kablam! For more information about this error, try `rustc --explain E0522`.
Sep 01 00:08:02.394 INFO kablam! error: Could not compile `rust-on-bbc-microbit`.
Sep 01 00:08:02.394 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 01 00:08:02.396 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 01 00:08:02.396 INFO kablam!   --> src/lib.rs:29:1
Sep 01 00:08:02.396 INFO kablam!    |
Sep 01 00:08:02.396 INFO kablam! 29 | #[lang = "panic_fmt"]
Sep 01 00:08:02.396 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 01 00:08:02.396 INFO kablam! 
Sep 01 00:08:02.397 INFO kablam! error[E0152]: duplicate lang item found: `eh_personality`.
Sep 01 00:08:02.397 INFO kablam!   --> src/lib.rs:44:1
Sep 01 00:08:02.397 INFO kablam!    |
Sep 01 00:08:02.397 INFO kablam! 44 | extern fn eh_personality() {}
Sep 01 00:08:02.397 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 01 00:08:02.397 INFO kablam!    |
Sep 01 00:08:02.397 INFO kablam!    = note: first defined in crate `panic_unwind`.
Sep 01 00:08:02.397 INFO kablam! 
Sep 01 00:08:02.581 INFO kablam! error: aborting due to 2 previous errors
Sep 01 00:08:02.581 INFO kablam! 
Sep 01 00:08:02.581 INFO kablam! Some errors occurred: E0152, E0522.
Sep 01 00:08:02.581 INFO kablam! For more information about an error, try `rustc --explain E0152`.
Sep 01 00:08:02.589 INFO kablam! error: Could not compile `rust-on-bbc-microbit`.
Sep 01 00:08:02.590 INFO kablam! 
Sep 01 00:08:02.590 INFO kablam! To learn more, run the command again with --verbose.
Sep 01 00:08:02.591 INFO kablam! su: No module specific data is present
Sep 01 00:08:03.080 INFO running `"docker" "rm" "-f" "b4131a1d09e363c90898e3ef0c12e902c93fb0d4a657e2d545b769701998fa95"`
Sep 01 00:08:03.184 INFO blam! b4131a1d09e363c90898e3ef0c12e902c93fb0d4a657e2d545b769701998fa95