Sep 01 21:58:27.388 INFO checking symbolics_calculus-0.1.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53851
Sep 01 21:58:27.388 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 21:58:27.388 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53851/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-2/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 21:58:27.576 INFO blam! 2c7fd7c969f039f29e6381feab7c2a7cdd269d57fc24d520b5ece20a1b54dc2d
Sep 01 21:58:27.578 INFO running `"docker" "start" "-a" "2c7fd7c969f039f29e6381feab7c2a7cdd269d57fc24d520b5ece20a1b54dc2d"`
Sep 01 21:58:28.246 INFO kablam!     Checking symbolics_core v0.1.2
Sep 01 21:58:28.724 INFO kablam!     Checking symbolics_calculus v0.1.0 (file:///source)
Sep 01 21:58:28.972 INFO kablam! warning: unused `#[macro_use]` import
Sep 01 21:58:28.972 INFO kablam!  --> src/lib.rs:1:1
Sep 01 21:58:28.972 INFO kablam!   |
Sep 01 21:58:28.972 INFO kablam! 1 | #[macro_use]
Sep 01 21:58:28.973 INFO kablam!   | ^^^^^^^^^^^^
Sep 01 21:58:28.973 INFO kablam!   |
Sep 01 21:58:28.973 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 01 21:58:28.973 INFO kablam! 
Sep 01 21:58:29.157 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
Sep 01 21:58:29.160 INFO kablam! su: No module specific data is present
Sep 01 21:58:29.689 INFO running `"docker" "rm" "-f" "2c7fd7c969f039f29e6381feab7c2a7cdd269d57fc24d520b5ece20a1b54dc2d"`
Sep 01 21:58:29.828 INFO blam! 2c7fd7c969f039f29e6381feab7c2a7cdd269d57fc24d520b5ece20a1b54dc2d