Aug 30 22:49:43.562 INFO checking calculator-0.0.1 against master#ede55518431154bc761f7b2438cce9078c162700 for pr-53707
Aug 30 22:49:43.562 INFO running: cargo +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets
Aug 30 22:49:43.562 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53707/master#ede55518431154bc761f7b2438cce9078c162700:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-2/master#ede55518431154bc761f7b2438cce9078c162700:/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 +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 22:49:43.790 INFO blam! 7caaf18f2c517d3ec14ac7951a0c17ab8301676f716b0a977325f84ebbd173d4
Aug 30 22:49:43.792 INFO running `"docker" "start" "-a" "7caaf18f2c517d3ec14ac7951a0c17ab8301676f716b0a977325f84ebbd173d4"`
Aug 30 22:49:44.559 INFO kablam!     Checking vec_map v0.0.1
Aug 30 22:49:45.407 INFO kablam!     Checking calculator v0.0.1 (file:///source)
Aug 30 22:49:46.463 INFO kablam! error[E0635]: unknown feature `collections`
Aug 30 22:49:46.463 INFO kablam!  --> src/expr.rs:4:12
Aug 30 22:49:46.463 INFO kablam!   |
Aug 30 22:49:46.463 INFO kablam! 4 | #![feature(collections)]
Aug 30 22:49:46.463 INFO kablam!   |            ^^^^^^^^^^^
Aug 30 22:49:46.463 INFO kablam! 
Aug 30 22:49:46.484 INFO kablam! error: aborting due to previous error
Aug 30 22:49:46.484 INFO kablam! 
Aug 30 22:49:46.484 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 30 22:49:46.493 INFO kablam! error: Could not compile `calculator`.
Aug 30 22:49:46.493 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 30 22:49:46.738 INFO kablam! error[E0635]: unknown feature `collections`
Aug 30 22:49:46.738 INFO kablam!  --> src/expr.rs:4:12
Aug 30 22:49:46.738 INFO kablam!   |
Aug 30 22:49:46.738 INFO kablam! 4 | #![feature(collections)]
Aug 30 22:49:46.739 INFO kablam!   |            ^^^^^^^^^^^
Aug 30 22:49:46.739 INFO kablam! 
Aug 30 22:49:46.779 INFO kablam! error: aborting due to previous error
Aug 30 22:49:46.780 INFO kablam! 
Aug 30 22:49:46.780 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 30 22:49:46.788 INFO kablam! error: Could not compile `calculator`.
Aug 30 22:49:46.788 INFO kablam! 
Aug 30 22:49:46.788 INFO kablam! To learn more, run the command again with --verbose.
Aug 30 22:49:46.789 INFO kablam! su: No module specific data is present
Aug 30 22:49:47.501 INFO running `"docker" "rm" "-f" "7caaf18f2c517d3ec14ac7951a0c17ab8301676f716b0a977325f84ebbd173d4"`
Aug 30 22:49:47.606 INFO blam! 7caaf18f2c517d3ec14ac7951a0c17ab8301676f716b0a977325f84ebbd173d4