Sep 20 23:35:15.564 INFO checking SimonSapin/rust-on-bbc-microbit against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 20 23:35:15.564 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 20 23:35:15.564 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-3/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 23:35:15.765 INFO blam! 8f64c1a2b41da5884d4fc3bab469008cc93790fcc13af9487a4fedeca56eb26c
Sep 20 23:35:15.765 INFO running `"docker" "start" "-a" "8f64c1a2b41da5884d4fc3bab469008cc93790fcc13af9487a4fedeca56eb26c"`
Sep 20 23:35:16.425 INFO kablam! usermod: no changes
Sep 20 23:35:16.460 INFO kablam!     Checking rust-on-bbc-microbit v0.1.0 (/source)
Sep 20 23:35:16.555 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 20 23:35:16.555 INFO kablam!   --> src/lib.rs:29:1
Sep 20 23:35:16.555 INFO kablam!    |
Sep 20 23:35:16.555 INFO kablam! 29 | #[lang = "panic_fmt"]
Sep 20 23:35:16.555 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 20 23:35:16.555 INFO kablam! 
Sep 20 23:35:16.555 INFO kablam! error: `#[panic_handler]` function required, but not found
Sep 20 23:35:16.555 INFO kablam! 
Sep 20 23:35:16.621 INFO kablam! error[E0522]: definition of an unknown language item: `panic_fmt`
Sep 20 23:35:16.621 INFO kablam!   --> src/lib.rs:29:1
Sep 20 23:35:16.621 INFO kablam!    |
Sep 20 23:35:16.621 INFO kablam! 29 | #[lang = "panic_fmt"]
Sep 20 23:35:16.621 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
Sep 20 23:35:16.621 INFO kablam! 
Sep 20 23:35:16.621 INFO kablam! error[E0152]: duplicate lang item found: `eh_personality`.
Sep 20 23:35:16.621 INFO kablam!   --> src/lib.rs:44:1
Sep 20 23:35:16.621 INFO kablam!    |
Sep 20 23:35:16.621 INFO kablam! 44 | extern fn eh_personality() {}
Sep 20 23:35:16.621 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 20 23:35:16.621 INFO kablam!    |
Sep 20 23:35:16.621 INFO kablam!    = note: first defined in crate `panic_unwind`.
Sep 20 23:35:16.621 INFO kablam! 
Sep 20 23:35:16.622 INFO kablam! error: aborting due to 2 previous errors
Sep 20 23:35:16.622 INFO kablam! 
Sep 20 23:35:16.622 INFO kablam! For more information about this error, try `rustc --explain E0522`.
Sep 20 23:35:16.630 INFO kablam! error: Could not compile `rust-on-bbc-microbit`.
Sep 20 23:35:16.630 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 20 23:35:16.706 INFO kablam! error: aborting due to 2 previous errors
Sep 20 23:35:16.706 INFO kablam! 
Sep 20 23:35:16.706 INFO kablam! Some errors occurred: E0152, E0522.
Sep 20 23:35:16.706 INFO kablam! For more information about an error, try `rustc --explain E0152`.
Sep 20 23:35:16.710 INFO kablam! error: Could not compile `rust-on-bbc-microbit`.
Sep 20 23:35:16.710 INFO kablam! 
Sep 20 23:35:16.710 INFO kablam! To learn more, run the command again with --verbose.
Sep 20 23:35:16.710 INFO kablam! su: No module specific data is present
Sep 20 23:35:17.242 INFO running `"docker" "rm" "-f" "8f64c1a2b41da5884d4fc3bab469008cc93790fcc13af9487a4fedeca56eb26c"`
Sep 20 23:35:17.305 INFO blam! 8f64c1a2b41da5884d4fc3bab469008cc93790fcc13af9487a4fedeca56eb26c