Sep 01 04:43:50.383 INFO checking symbolics_calculus-0.1.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 04:43:50.383 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 04:43:50.383 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/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 04:43:50.538 INFO blam! 23d94e4fe1541dbbd438ffc42a4b1342bf780b8f20b45ce0278239cd604ad071
Sep 01 04:43:50.540 INFO running `"docker" "start" "-a" "23d94e4fe1541dbbd438ffc42a4b1342bf780b8f20b45ce0278239cd604ad071"`
Sep 01 04:43:51.217 INFO kablam!     Checking symbolics_core v0.1.2
Sep 01 04:43:51.650 INFO kablam!     Checking symbolics_calculus v0.1.0 (file:///source)
Sep 01 04:43:51.922 INFO kablam! warning: unused `#[macro_use]` import
Sep 01 04:43:51.922 INFO kablam!  --> src/lib.rs:1:1
Sep 01 04:43:51.922 INFO kablam!   |
Sep 01 04:43:51.922 INFO kablam! 1 | #[macro_use]
Sep 01 04:43:51.922 INFO kablam!   | ^^^^^^^^^^^^
Sep 01 04:43:51.923 INFO kablam!   |
Sep 01 04:43:51.923 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 01 04:43:51.923 INFO kablam! 
Sep 01 04:43:52.057 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
Sep 01 04:43:52.059 INFO kablam! su: No module specific data is present
Sep 01 04:43:52.641 INFO running `"docker" "rm" "-f" "23d94e4fe1541dbbd438ffc42a4b1342bf780b8f20b45ce0278239cd604ad071"`
Sep 01 04:43:52.732 INFO blam! 23d94e4fe1541dbbd438ffc42a4b1342bf780b8f20b45ce0278239cd604ad071