Aug 11 18:31:57.546 INFO checking calculator-0.0.1 against try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+tmplazy for libc-1
Aug 11 18:31:57.546 INFO running: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 11 18:31:57.546 INFO creating container for: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 11 18:31:57.546 INFO running `"docker" "create" "-v" "/tmp/crater.ahrJ46bxUOgm:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-1/try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+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 +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 11 18:31:57.799 INFO blam! 1994b9cd1eca7f61278455c527600bef6a2d72456c9561450e136e4c6dd44062
Aug 11 18:31:57.821 INFO running `"docker" "start" "-a" "1994b9cd1eca7f61278455c527600bef6a2d72456c9561450e136e4c6dd44062"`
Aug 11 18:31:59.479 INFO kablam!     Checking calculator v0.0.1 (file:///source)
Aug 11 18:31:59.901 INFO kablam! error[E0635]: unknown feature `collections`
Aug 11 18:31:59.901 INFO kablam!  --> src/expr.rs:4:12
Aug 11 18:31:59.901 INFO kablam!   |
Aug 11 18:31:59.901 INFO kablam! 4 | #![feature(collections)]
Aug 11 18:31:59.901 INFO kablam!   |            ^^^^^^^^^^^
Aug 11 18:31:59.901 INFO kablam! 
Aug 11 18:31:59.914 INFO kablam! error: aborting due to previous error
Aug 11 18:31:59.914 INFO kablam! 
Aug 11 18:31:59.914 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 18:31:59.920 INFO kablam! error: Could not compile `calculator`.
Aug 11 18:31:59.920 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 11 18:32:00.211 INFO kablam! error[E0635]: unknown feature `collections`
Aug 11 18:32:00.211 INFO kablam!  --> src/expr.rs:4:12
Aug 11 18:32:00.211 INFO kablam!   |
Aug 11 18:32:00.211 INFO kablam! 4 | #![feature(collections)]
Aug 11 18:32:00.211 INFO kablam!   |            ^^^^^^^^^^^
Aug 11 18:32:00.211 INFO kablam! 
Aug 11 18:32:00.267 INFO kablam! error: aborting due to previous error
Aug 11 18:32:00.268 INFO kablam! 
Aug 11 18:32:00.268 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 18:32:00.277 INFO kablam! error: Could not compile `calculator`.
Aug 11 18:32:00.277 INFO kablam! 
Aug 11 18:32:00.277 INFO kablam! To learn more, run the command again with --verbose.
Aug 11 18:32:00.282 INFO kablam! su: No module specific data is present
Aug 11 18:32:00.905 INFO running `"docker" "rm" "-f" "1994b9cd1eca7f61278455c527600bef6a2d72456c9561450e136e4c6dd44062"`
Aug 11 18:32:01.014 INFO blam! 1994b9cd1eca7f61278455c527600bef6a2d72456c9561450e136e4c6dd44062