Aug 02 02:43:39.796 INFO checking panic-semihosting-0.3.0 against 1.27.2+tmplazy for lazy_static-1
Aug 02 02:43:39.796 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:43:39.796 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:43:39.796 INFO running `"docker" "create" "-v" "/tmp/crater.B0emhRWgl5qB:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2+tmplazy:/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" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 02 02:43:39.998 INFO blam! 216271a50f196684df25060247826bc58987de2bd7aa5bf0a4040352c79e707d
Aug 02 02:43:40.000 INFO running `"docker" "start" "-a" "216271a50f196684df25060247826bc58987de2bd7aa5bf0a4040352c79e707d"`
Aug 02 02:43:40.997 INFO kablam!    Compiling cortex-m-semihosting v0.3.0
Aug 02 02:43:42.170 INFO kablam!     Checking panic-semihosting v0.3.0 (file:///source)
Aug 02 02:43:42.405 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:43:42.405 INFO kablam!   --> src/lib.rs:59:1
Aug 02 02:43:42.405 INFO kablam!    |
Aug 02 02:43:42.405 INFO kablam! 59 | #![feature(panic_implementation)]
Aug 02 02:43:42.405 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:43:42.405 INFO kablam! 
Aug 02 02:43:42.406 INFO kablam! error[E0658]: The attribute `panic_implementation` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 02 02:43:42.406 INFO kablam!   --> src/lib.rs:71:1
Aug 02 02:43:42.406 INFO kablam!    |
Aug 02 02:43:42.406 INFO kablam! 71 | #[panic_implementation]
Aug 02 02:43:42.406 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:43:42.406 INFO kablam! 
Aug 02 02:43:42.406 INFO kablam! error: aborting due to 2 previous errors
Aug 02 02:43:42.406 INFO kablam! 
Aug 02 02:43:42.406 INFO kablam! Some errors occurred: E0554, E0658.
Aug 02 02:43:42.406 INFO kablam! For more information about an error, try `rustc --explain E0554`.
Aug 02 02:43:42.411 INFO kablam! error: Could not compile `panic-semihosting`.
Aug 02 02:43:42.411 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 02:43:42.658 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:43:42.658 INFO kablam!   --> src/lib.rs:59:1
Aug 02 02:43:42.658 INFO kablam!    |
Aug 02 02:43:42.658 INFO kablam! 59 | #![feature(panic_implementation)]
Aug 02 02:43:42.658 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:43:42.658 INFO kablam! 
Aug 02 02:43:42.658 INFO kablam! error[E0658]: The attribute `panic_implementation` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 02 02:43:42.658 INFO kablam!   --> src/lib.rs:71:1
Aug 02 02:43:42.659 INFO kablam!    |
Aug 02 02:43:42.659 INFO kablam! 71 | #[panic_implementation]
Aug 02 02:43:42.659 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:43:42.659 INFO kablam! 
Aug 02 02:43:42.659 INFO kablam! error: aborting due to 2 previous errors
Aug 02 02:43:42.659 INFO kablam! 
Aug 02 02:43:42.659 INFO kablam! Some errors occurred: E0554, E0658.
Aug 02 02:43:42.659 INFO kablam! For more information about an error, try `rustc --explain E0554`.
Aug 02 02:43:42.665 INFO kablam! error: Could not compile `panic-semihosting`.
Aug 02 02:43:42.665 INFO kablam! 
Aug 02 02:43:42.665 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 02:43:42.668 INFO kablam! su: No module specific data is present
Aug 02 02:43:43.550 INFO running `"docker" "rm" "-f" "216271a50f196684df25060247826bc58987de2bd7aa5bf0a4040352c79e707d"`
Aug 02 02:43:43.644 INFO blam! 216271a50f196684df25060247826bc58987de2bd7aa5bf0a4040352c79e707d