Sep 04 22:25:19.378 INFO checking calculator-0.0.1 against try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0 for pr-53893
Sep 04 22:25:19.378 INFO running: cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets
Sep 04 22:25:19.378 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53893/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-3/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/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 +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 22:25:19.550 INFO blam! ec281eb7762f5d5550d19d7b09db8393a78a8b30eda4542089d63bd8057c9aa5
Sep 04 22:25:19.552 INFO running `"docker" "start" "-a" "ec281eb7762f5d5550d19d7b09db8393a78a8b30eda4542089d63bd8057c9aa5"`
Sep 04 22:25:20.269 INFO kablam!     Checking calculator v0.0.1 (file:///source)
Sep 04 22:25:21.352 INFO kablam! error[E0635]: unknown feature `collections`
Sep 04 22:25:21.352 INFO kablam!  --> src/expr.rs:4:12
Sep 04 22:25:21.352 INFO kablam!   |
Sep 04 22:25:21.352 INFO kablam! 4 | #![feature(collections)]
Sep 04 22:25:21.352 INFO kablam!   |            ^^^^^^^^^^^
Sep 04 22:25:21.352 INFO kablam! 
Sep 04 22:25:21.373 INFO kablam! error: aborting due to previous error
Sep 04 22:25:21.373 INFO kablam! 
Sep 04 22:25:21.373 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 04 22:25:21.381 INFO kablam! error: Could not compile `calculator`.
Sep 04 22:25:21.381 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 22:25:21.853 INFO kablam! error[E0635]: unknown feature `collections`
Sep 04 22:25:21.853 INFO kablam!  --> src/expr.rs:4:12
Sep 04 22:25:21.853 INFO kablam!   |
Sep 04 22:25:21.853 INFO kablam! 4 | #![feature(collections)]
Sep 04 22:25:21.853 INFO kablam!   |            ^^^^^^^^^^^
Sep 04 22:25:21.853 INFO kablam! 
Sep 04 22:25:21.893 INFO kablam! error: aborting due to previous error
Sep 04 22:25:21.893 INFO kablam! 
Sep 04 22:25:21.893 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 04 22:25:21.902 INFO kablam! error: Could not compile `calculator`.
Sep 04 22:25:21.902 INFO kablam! 
Sep 04 22:25:21.902 INFO kablam! To learn more, run the command again with --verbose.
Sep 04 22:25:21.904 INFO kablam! su: No module specific data is present
Sep 04 22:25:22.370 INFO running `"docker" "rm" "-f" "ec281eb7762f5d5550d19d7b09db8393a78a8b30eda4542089d63bd8057c9aa5"`
Sep 04 22:25:22.512 INFO blam! ec281eb7762f5d5550d19d7b09db8393a78a8b30eda4542089d63bd8057c9aa5