Sep 21 12:38:33.017 INFO checking calculator-0.0.1 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 12:38:33.017 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 12:38:33.017 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-5/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 12:38:33.252 INFO blam! 6dd7fcb163cd1664ed9a76435f4bafbd097f105a5b8cddf975fa2b09390f8696
Sep 21 12:38:33.253 INFO running `"docker" "start" "-a" "6dd7fcb163cd1664ed9a76435f4bafbd097f105a5b8cddf975fa2b09390f8696"`
Sep 21 12:38:34.029 INFO kablam! usermod: no changes
Sep 21 12:38:34.066 INFO kablam!     Checking vec_map v0.0.1
Sep 21 12:38:34.572 INFO kablam!     Checking calculator v0.0.1 (/source)
Sep 21 12:38:35.134 INFO kablam! error[E0635]: unknown feature `collections`
Sep 21 12:38:35.134 INFO kablam!  --> src/expr.rs:4:12
Sep 21 12:38:35.134 INFO kablam!   |
Sep 21 12:38:35.134 INFO kablam! 4 | #![feature(collections)]
Sep 21 12:38:35.134 INFO kablam!   |            ^^^^^^^^^^^
Sep 21 12:38:35.134 INFO kablam! 
Sep 21 12:38:35.147 INFO kablam! error: aborting due to previous error
Sep 21 12:38:35.147 INFO kablam! 
Sep 21 12:38:35.147 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 21 12:38:35.157 INFO kablam! error: Could not compile `calculator`.
Sep 21 12:38:35.157 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 21 12:38:35.386 INFO kablam! error[E0635]: unknown feature `collections`
Sep 21 12:38:35.386 INFO kablam!  --> src/expr.rs:4:12
Sep 21 12:38:35.386 INFO kablam!   |
Sep 21 12:38:35.386 INFO kablam! 4 | #![feature(collections)]
Sep 21 12:38:35.386 INFO kablam!   |            ^^^^^^^^^^^
Sep 21 12:38:35.386 INFO kablam! 
Sep 21 12:38:35.418 INFO kablam! error: aborting due to previous error
Sep 21 12:38:35.418 INFO kablam! 
Sep 21 12:38:35.418 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 21 12:38:35.425 INFO kablam! error: Could not compile `calculator`.
Sep 21 12:38:35.425 INFO kablam! 
Sep 21 12:38:35.425 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 12:38:35.426 INFO kablam! su: No module specific data is present
Sep 21 12:38:36.297 INFO running `"docker" "rm" "-f" "6dd7fcb163cd1664ed9a76435f4bafbd097f105a5b8cddf975fa2b09390f8696"`
Sep 21 12:38:36.389 INFO blam! 6dd7fcb163cd1664ed9a76435f4bafbd097f105a5b8cddf975fa2b09390f8696