Aug 02 12:22:32.769 INFO checking cortex-m-rt-0.5.1 against 1.27.2 for lazy_static-1
Aug 02 12:22:32.770 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:22:32.770 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:22:32.770 INFO running `"docker" "create" "-v" "/tmp/crater.PBzvTZru9xrn:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2:/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 12:22:33.023 INFO blam! f245f2563006c52adcae57005a77052b7aa1fc2b3fa50e1321587df2c5b83f34
Aug 02 12:22:33.025 INFO running `"docker" "start" "-a" "f245f2563006c52adcae57005a77052b7aa1fc2b3fa50e1321587df2c5b83f34"`
Aug 02 12:22:34.055 INFO kablam!    Compiling cortex-m-semihosting v0.3.0
Aug 02 12:22:34.058 INFO kablam!    Compiling cortex-m-rt v0.5.1 (file:///source)
Aug 02 12:22:36.345 INFO kablam!     Checking panic-semihosting v0.2.0
Aug 02 12:22:36.686 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:22:36.686 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.2.0/src/lib.rs:56:1
Aug 02 12:22:36.686 INFO kablam!    |
Aug 02 12:22:36.686 INFO kablam! 56 | #![feature(lang_items)]
Aug 02 12:22:36.686 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:22:36.686 INFO kablam! 
Aug 02 12:22:36.686 INFO kablam! error: aborting due to previous error
Aug 02 12:22:36.686 INFO kablam! 
Aug 02 12:22:36.686 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:22:36.692 INFO kablam! error: Could not compile `panic-semihosting`.
Aug 02 12:22:36.692 INFO kablam! 
Aug 02 12:22:36.692 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 12:22:36.693 INFO kablam! su: No module specific data is present
Aug 02 12:22:37.310 INFO running `"docker" "rm" "-f" "f245f2563006c52adcae57005a77052b7aa1fc2b3fa50e1321587df2c5b83f34"`
Aug 02 12:22:37.487 INFO blam! f245f2563006c52adcae57005a77052b7aa1fc2b3fa50e1321587df2c5b83f34