Sep 01 08:59:49.030 INFO checking calculator-0.0.1 against master#d0d81b7fc1421859ba0218e8a437af29ae3b0967 for pr-53578
Sep 01 08:59:49.031 INFO running: cargo +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets
Sep 01 08:59:49.031 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53578/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-1/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/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 +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 08:59:49.277 INFO blam! 184de3a87a469128fe02cc7a2f2864b0136e32016b11d3644c037adc3574db77
Sep 01 08:59:49.280 INFO running `"docker" "start" "-a" "184de3a87a469128fe02cc7a2f2864b0136e32016b11d3644c037adc3574db77"`
Sep 01 08:59:50.017 INFO kablam!     Checking calculator v0.0.1 (file:///source)
Sep 01 08:59:51.054 INFO kablam! error[E0635]: unknown feature `collections`
Sep 01 08:59:51.054 INFO kablam!  --> src/expr.rs:4:12
Sep 01 08:59:51.054 INFO kablam!   |
Sep 01 08:59:51.054 INFO kablam! 4 | #![feature(collections)]
Sep 01 08:59:51.055 INFO kablam!   |            ^^^^^^^^^^^
Sep 01 08:59:51.055 INFO kablam! 
Sep 01 08:59:51.076 INFO kablam! error: aborting due to previous error
Sep 01 08:59:51.076 INFO kablam! 
Sep 01 08:59:51.076 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 01 08:59:51.084 INFO kablam! error: Could not compile `calculator`.
Sep 01 08:59:51.085 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 01 08:59:51.258 INFO kablam! error[E0635]: unknown feature `collections`
Sep 01 08:59:51.258 INFO kablam!  --> src/expr.rs:4:12
Sep 01 08:59:51.259 INFO kablam!   |
Sep 01 08:59:51.259 INFO kablam! 4 | #![feature(collections)]
Sep 01 08:59:51.259 INFO kablam!   |            ^^^^^^^^^^^
Sep 01 08:59:51.259 INFO kablam! 
Sep 01 08:59:51.289 INFO kablam! error: aborting due to previous error
Sep 01 08:59:51.289 INFO kablam! 
Sep 01 08:59:51.289 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 01 08:59:51.297 INFO kablam! error: Could not compile `calculator`.
Sep 01 08:59:51.297 INFO kablam! 
Sep 01 08:59:51.298 INFO kablam! To learn more, run the command again with --verbose.
Sep 01 08:59:51.299 INFO kablam! su: No module specific data is present
Sep 01 08:59:51.665 INFO running `"docker" "rm" "-f" "184de3a87a469128fe02cc7a2f2864b0136e32016b11d3644c037adc3574db77"`
Sep 01 08:59:51.773 INFO blam! 184de3a87a469128fe02cc7a2f2864b0136e32016b11d3644c037adc3574db77