Sep 18 02:56:47.766 INFO checking calculator-0.0.1 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 18 02:56:47.766 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 18 02:56:47.766 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-6/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/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=1000" "-e" "CMD=cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 18 02:56:47.914 INFO blam! 43d781963ab580dfbe064d36d718a6619c94e4594d1d3e2df0216399b58f0531
Sep 18 02:56:47.915 INFO running `"docker" "start" "-a" "43d781963ab580dfbe064d36d718a6619c94e4594d1d3e2df0216399b58f0531"`
Sep 18 02:56:48.570 INFO kablam! usermod: no changes
Sep 18 02:56:48.594 INFO kablam!     Checking vec_map v0.0.1
Sep 18 02:56:49.008 INFO kablam!     Checking calculator v0.0.1 (/source)
Sep 18 02:56:49.538 INFO kablam! error[E0635]: unknown feature `collections`
Sep 18 02:56:49.539 INFO kablam!  --> src/expr.rs:4:12
Sep 18 02:56:49.539 INFO kablam!   |
Sep 18 02:56:49.539 INFO kablam! 4 | #![feature(collections)]
Sep 18 02:56:49.539 INFO kablam!   |            ^^^^^^^^^^^
Sep 18 02:56:49.539 INFO kablam! 
Sep 18 02:56:49.547 INFO kablam! error: aborting due to previous error
Sep 18 02:56:49.547 INFO kablam! 
Sep 18 02:56:49.547 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 18 02:56:49.563 INFO kablam! error: Could not compile `calculator`.
Sep 18 02:56:49.563 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 18 02:56:49.743 INFO kablam! error[E0635]: unknown feature `collections`
Sep 18 02:56:49.743 INFO kablam!  --> src/expr.rs:4:12
Sep 18 02:56:49.743 INFO kablam!   |
Sep 18 02:56:49.743 INFO kablam! 4 | #![feature(collections)]
Sep 18 02:56:49.743 INFO kablam!   |            ^^^^^^^^^^^
Sep 18 02:56:49.743 INFO kablam! 
Sep 18 02:56:49.768 INFO kablam! error: aborting due to previous error
Sep 18 02:56:49.768 INFO kablam! 
Sep 18 02:56:49.768 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 18 02:56:49.777 INFO kablam! error: Could not compile `calculator`.
Sep 18 02:56:49.777 INFO kablam! 
Sep 18 02:56:49.777 INFO kablam! To learn more, run the command again with --verbose.
Sep 18 02:56:49.781 INFO kablam! su: No module specific data is present
Sep 18 02:56:50.560 INFO running `"docker" "rm" "-f" "43d781963ab580dfbe064d36d718a6619c94e4594d1d3e2df0216399b58f0531"`
Sep 18 02:56:50.823 INFO blam! 43d781963ab580dfbe064d36d718a6619c94e4594d1d3e2df0216399b58f0531