Aug 02 02:43:39.969 INFO checking panic-semihosting-0.3.0 against 1.27.2 for lazy_static-1
Aug 02 02:43:39.969 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:43:39.969 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:43:39.969 INFO running `"docker" "create" "-v" "/tmp/crater.MiC3JJOTd3tS:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2:/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 02:43:40.223 INFO blam! 88ca54a4bfec2579a27b70d085f67b41bf24e03229210c0320d7e0599d87cc9c
Aug 02 02:43:40.228 INFO running `"docker" "start" "-a" "88ca54a4bfec2579a27b70d085f67b41bf24e03229210c0320d7e0599d87cc9c"`
Aug 02 02:43:41.319 INFO kablam!    Compiling cortex-m-semihosting v0.3.0
Aug 02 02:43:42.623 INFO kablam!     Checking panic-semihosting v0.3.0 (file:///source)
Aug 02 02:43:42.878 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:43:42.878 INFO kablam!   --> src/lib.rs:59:1
Aug 02 02:43:42.878 INFO kablam!    |
Aug 02 02:43:42.878 INFO kablam! 59 | #![feature(panic_implementation)]
Aug 02 02:43:42.878 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:43:42.879 INFO kablam! 
Aug 02 02:43:42.879 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 02:43:42.879 INFO kablam!   --> src/lib.rs:71:1
Aug 02 02:43:42.879 INFO kablam!    |
Aug 02 02:43:42.879 INFO kablam! 71 | #[panic_implementation]
Aug 02 02:43:42.879 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:43:42.879 INFO kablam! 
Aug 02 02:43:42.880 INFO kablam! error: aborting due to 2 previous errors
Aug 02 02:43:42.880 INFO kablam! 
Aug 02 02:43:42.880 INFO kablam! Some errors occurred: E0554, E0658.
Aug 02 02:43:42.880 INFO kablam! For more information about an error, try `rustc --explain E0554`.
Aug 02 02:43:42.888 INFO kablam! error: Could not compile `panic-semihosting`.
Aug 02 02:43:42.888 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 02:43:43.045 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:43:43.045 INFO kablam!   --> src/lib.rs:59:1
Aug 02 02:43:43.045 INFO kablam!    |
Aug 02 02:43:43.045 INFO kablam! 59 | #![feature(panic_implementation)]
Aug 02 02:43:43.045 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:43:43.045 INFO kablam! 
Aug 02 02:43:43.045 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 02:43:43.045 INFO kablam!   --> src/lib.rs:71:1
Aug 02 02:43:43.045 INFO kablam!    |
Aug 02 02:43:43.045 INFO kablam! 71 | #[panic_implementation]
Aug 02 02:43:43.045 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:43:43.045 INFO kablam! 
Aug 02 02:43:43.045 INFO kablam! error: aborting due to 2 previous errors
Aug 02 02:43:43.045 INFO kablam! 
Aug 02 02:43:43.045 INFO kablam! Some errors occurred: E0554, E0658.
Aug 02 02:43:43.045 INFO kablam! For more information about an error, try `rustc --explain E0554`.
Aug 02 02:43:43.047 INFO kablam! error: Could not compile `panic-semihosting`.
Aug 02 02:43:43.048 INFO kablam! 
Aug 02 02:43:43.048 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 02:43:43.049 INFO kablam! su: No module specific data is present
Aug 02 02:43:44.134 INFO running `"docker" "rm" "-f" "88ca54a4bfec2579a27b70d085f67b41bf24e03229210c0320d7e0599d87cc9c"`
Aug 02 02:43:44.236 INFO blam! 88ca54a4bfec2579a27b70d085f67b41bf24e03229210c0320d7e0599d87cc9c