Sep 02 19:04:23.075 INFO checking calculator-0.0.1 against try#952c7dbfa2628309f557b367929ffc17af20b332 for pr-53851
Sep 02 19:04:23.075 INFO running: cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets
Sep 02 19:04:23.075 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53851/try#952c7dbfa2628309f557b367929ffc17af20b332:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-1/try#952c7dbfa2628309f557b367929ffc17af20b332:/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 +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 19:04:23.253 INFO blam! 475a52f6f2a270bf7c279fb26cce005ed3bc04c7240e905b061a451e1ef7bf18
Sep 02 19:04:23.255 INFO running `"docker" "start" "-a" "475a52f6f2a270bf7c279fb26cce005ed3bc04c7240e905b061a451e1ef7bf18"`
Sep 02 19:04:23.968 INFO kablam!     Checking calculator v0.0.1 (file:///source)
Sep 02 19:04:25.015 INFO kablam! error[E0635]: unknown feature `collections`
Sep 02 19:04:25.015 INFO kablam!  --> src/expr.rs:4:12
Sep 02 19:04:25.015 INFO kablam!   |
Sep 02 19:04:25.015 INFO kablam! 4 | #![feature(collections)]
Sep 02 19:04:25.015 INFO kablam!   |            ^^^^^^^^^^^
Sep 02 19:04:25.016 INFO kablam! 
Sep 02 19:04:25.038 INFO kablam! error: aborting due to previous error
Sep 02 19:04:25.039 INFO kablam! 
Sep 02 19:04:25.039 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 02 19:04:25.059 INFO kablam! error: Could not compile `calculator`.
Sep 02 19:04:25.060 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 02 19:04:25.733 INFO kablam! error[E0635]: unknown feature `collections`
Sep 02 19:04:25.733 INFO kablam!  --> src/expr.rs:4:12
Sep 02 19:04:25.733 INFO kablam!   |
Sep 02 19:04:25.733 INFO kablam! 4 | #![feature(collections)]
Sep 02 19:04:25.733 INFO kablam!   |            ^^^^^^^^^^^
Sep 02 19:04:25.733 INFO kablam! 
Sep 02 19:04:25.763 INFO kablam! error: aborting due to previous error
Sep 02 19:04:25.763 INFO kablam! 
Sep 02 19:04:25.763 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 02 19:04:25.771 INFO kablam! error: Could not compile `calculator`.
Sep 02 19:04:25.771 INFO kablam! 
Sep 02 19:04:25.771 INFO kablam! To learn more, run the command again with --verbose.
Sep 02 19:04:25.772 INFO kablam! su: No module specific data is present
Sep 02 19:04:26.223 INFO running `"docker" "rm" "-f" "475a52f6f2a270bf7c279fb26cce005ed3bc04c7240e905b061a451e1ef7bf18"`
Sep 02 19:04:26.350 INFO blam! 475a52f6f2a270bf7c279fb26cce005ed3bc04c7240e905b061a451e1ef7bf18