Aug 02 13:32:50.775 INFO checking calculator-0.0.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 13:32:50.775 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:32:50.775 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:32:50.775 INFO running `"docker" "create" "-v" "/tmp/crater.xnvRSScNrKLP:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2+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 13:32:50.958 INFO blam! 01caf1b4446b4d29ef33075ef46b08e8e6f87848f45078a5d137f94fac88c123
Aug 02 13:32:50.960 INFO running `"docker" "start" "-a" "01caf1b4446b4d29ef33075ef46b08e8e6f87848f45078a5d137f94fac88c123"`
Aug 02 13:32:52.796 INFO kablam!     Checking calculator v0.0.1 (file:///source)
Aug 02 13:32:53.424 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:32:53.424 INFO kablam!  --> src/expr.rs:4:1
Aug 02 13:32:53.424 INFO kablam!   |
Aug 02 13:32:53.424 INFO kablam! 4 | #![feature(collections)]
Aug 02 13:32:53.424 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 13:32:53.424 INFO kablam! 
Aug 02 13:32:53.424 INFO kablam! error: aborting due to previous error
Aug 02 13:32:53.424 INFO kablam! 
Aug 02 13:32:53.424 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 13:32:53.431 INFO kablam! error: Could not compile `calculator`.
Aug 02 13:32:53.431 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 13:32:53.523 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:32:53.523 INFO kablam!  --> src/expr.rs:4:1
Aug 02 13:32:53.524 INFO kablam!   |
Aug 02 13:32:53.524 INFO kablam! 4 | #![feature(collections)]
Aug 02 13:32:53.524 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 13:32:53.524 INFO kablam! 
Aug 02 13:32:53.526 INFO kablam! error: aborting due to previous error
Aug 02 13:32:53.526 INFO kablam! 
Aug 02 13:32:53.526 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 13:32:53.532 INFO kablam! error: Could not compile `calculator`.
Aug 02 13:32:53.533 INFO kablam! 
Aug 02 13:32:53.533 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 13:32:53.535 INFO kablam! su: No module specific data is present
Aug 02 13:32:54.522 INFO running `"docker" "rm" "-f" "01caf1b4446b4d29ef33075ef46b08e8e6f87848f45078a5d137f94fac88c123"`
Aug 02 13:32:54.722 INFO blam! 01caf1b4446b4d29ef33075ef46b08e8e6f87848f45078a5d137f94fac88c123