Sep 04 22:25:20.180 INFO checking calculator-0.0.1 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 22:25:20.180 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 22:25:20.180 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-2/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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 +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 22:25:20.430 INFO blam! 0d5c32ce69c174112d0d6d3a6eb3cb1e718183d3936dc8a27ad48596f08bbf40
Sep 04 22:25:20.432 INFO running `"docker" "start" "-a" "0d5c32ce69c174112d0d6d3a6eb3cb1e718183d3936dc8a27ad48596f08bbf40"`
Sep 04 22:25:21.171 INFO kablam!     Checking vec_map v0.0.1
Sep 04 22:25:22.104 INFO kablam!     Checking calculator v0.0.1 (file:///source)
Sep 04 22:25:23.204 INFO kablam! error[E0635]: unknown feature `collections`
Sep 04 22:25:23.204 INFO kablam!  --> src/expr.rs:4:12
Sep 04 22:25:23.204 INFO kablam!   |
Sep 04 22:25:23.204 INFO kablam! 4 | #![feature(collections)]
Sep 04 22:25:23.204 INFO kablam!   |            ^^^^^^^^^^^
Sep 04 22:25:23.204 INFO kablam! 
Sep 04 22:25:23.225 INFO kablam! error: aborting due to previous error
Sep 04 22:25:23.225 INFO kablam! 
Sep 04 22:25:23.226 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 04 22:25:23.234 INFO kablam! error: Could not compile `calculator`.
Sep 04 22:25:23.235 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 22:25:23.753 INFO kablam! error[E0635]: unknown feature `collections`
Sep 04 22:25:23.753 INFO kablam!  --> src/expr.rs:4:12
Sep 04 22:25:23.753 INFO kablam!   |
Sep 04 22:25:23.753 INFO kablam! 4 | #![feature(collections)]
Sep 04 22:25:23.753 INFO kablam!   |            ^^^^^^^^^^^
Sep 04 22:25:23.753 INFO kablam! 
Sep 04 22:25:23.793 INFO kablam! error: aborting due to previous error
Sep 04 22:25:23.793 INFO kablam! 
Sep 04 22:25:23.793 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 04 22:25:23.802 INFO kablam! error: Could not compile `calculator`.
Sep 04 22:25:23.802 INFO kablam! 
Sep 04 22:25:23.802 INFO kablam! To learn more, run the command again with --verbose.
Sep 04 22:25:23.804 INFO kablam! su: No module specific data is present
Sep 04 22:25:24.296 INFO running `"docker" "rm" "-f" "0d5c32ce69c174112d0d6d3a6eb3cb1e718183d3936dc8a27ad48596f08bbf40"`
Sep 04 22:25:24.421 INFO blam! 0d5c32ce69c174112d0d6d3a6eb3cb1e718183d3936dc8a27ad48596f08bbf40