Aug 30 22:49:42.921 INFO checking calculator-0.0.1 against try#2d477f9981361618ac78253c28051a66b6cea125 for pr-53707
Aug 30 22:49:42.921 INFO running: cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets
Aug 30 22:49:42.921 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53707/try#2d477f9981361618ac78253c28051a66b6cea125:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-1/try#2d477f9981361618ac78253c28051a66b6cea125:/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" "-e" "USER_ID=500" "-e" "CMD=cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 22:49:43.230 INFO blam! 8100f4f22ffb5a45055197737f16d407f044470a84d3bc90d0c8ee875d808b06
Aug 30 22:49:43.232 INFO running `"docker" "start" "-a" "8100f4f22ffb5a45055197737f16d407f044470a84d3bc90d0c8ee875d808b06"`
Aug 30 22:49:44.076 INFO kablam!     Checking calculator v0.0.1 (file:///source)
Aug 30 22:49:45.243 INFO kablam! error[E0635]: unknown feature `collections`
Aug 30 22:49:45.243 INFO kablam!  --> src/expr.rs:4:12
Aug 30 22:49:45.243 INFO kablam!   |
Aug 30 22:49:45.243 INFO kablam! 4 | #![feature(collections)]
Aug 30 22:49:45.243 INFO kablam!   |            ^^^^^^^^^^^
Aug 30 22:49:45.243 INFO kablam! 
Aug 30 22:49:45.265 INFO kablam! error: aborting due to previous error
Aug 30 22:49:45.265 INFO kablam! 
Aug 30 22:49:45.265 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 30 22:49:45.272 INFO kablam! error: Could not compile `calculator`.
Aug 30 22:49:45.272 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 30 22:49:45.566 INFO kablam! error[E0635]: unknown feature `collections`
Aug 30 22:49:45.566 INFO kablam!  --> src/expr.rs:4:12
Aug 30 22:49:45.566 INFO kablam!   |
Aug 30 22:49:45.566 INFO kablam! 4 | #![feature(collections)]
Aug 30 22:49:45.566 INFO kablam!   |            ^^^^^^^^^^^
Aug 30 22:49:45.566 INFO kablam! 
Aug 30 22:49:45.595 INFO kablam! error: aborting due to previous error
Aug 30 22:49:45.595 INFO kablam! 
Aug 30 22:49:45.595 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 30 22:49:45.601 INFO kablam! error: Could not compile `calculator`.
Aug 30 22:49:45.601 INFO kablam! 
Aug 30 22:49:45.601 INFO kablam! To learn more, run the command again with --verbose.
Aug 30 22:49:45.602 INFO kablam! su: No module specific data is present
Aug 30 22:49:46.296 INFO running `"docker" "rm" "-f" "8100f4f22ffb5a45055197737f16d407f044470a84d3bc90d0c8ee875d808b06"`
Aug 30 22:49:46.440 INFO blam! 8100f4f22ffb5a45055197737f16d407f044470a84d3bc90d0c8ee875d808b06