Jul 12 12:15:07.532 INFO checking circular-0.2.0 against master#ae5b629efd79de78e6ba7ef493c32857bd7f9cf9 for pr-52234
Jul 12 12:15:07.532 INFO running: cargo +ae5b629efd79de78e6ba7ef493c32857bd7f9cf9-alt check --frozen --all --all-targets
Jul 12 12:15:07.532 INFO creating container for: cargo +ae5b629efd79de78e6ba7ef493c32857bd7f9cf9-alt check --frozen --all --all-targets
Jul 12 12:15:07.532 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-52234/master#ae5b629efd79de78e6ba7ef493c32857bd7f9cf9:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-52234/worker-4/master#ae5b629efd79de78e6ba7ef493c32857bd7f9cf9:/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 +ae5b629efd79de78e6ba7ef493c32857bd7f9cf9-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Jul 12 12:15:07.784 INFO blam! c6cea2fa3d85850429fbd3ee1d590d94735794dc12f583c902409af50b4f6244
Jul 12 12:15:07.787 INFO running `"docker" "start" "-a" "c6cea2fa3d85850429fbd3ee1d590d94735794dc12f583c902409af50b4f6244"`
Jul 12 12:15:08.888 INFO kablam!     Checking circular v0.2.0 (file:///source)
Jul 12 12:15:09.916 INFO kablam! warning: unused import: `std::str`
Jul 12 12:15:09.916 INFO kablam!    --> src/lib.rs:387:7
Jul 12 12:15:09.916 INFO kablam!     |
Jul 12 12:15:09.916 INFO kablam! 387 |   use std::str;
Jul 12 12:15:09.916 INFO kablam!     |       ^^^^^^^^
Jul 12 12:15:09.916 INFO kablam!     |
Jul 12 12:15:09.917 INFO kablam!     = note: #[warn(unused_imports)] on by default
Jul 12 12:15:09.917 INFO kablam! 
Jul 12 12:15:10.548 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
Jul 12 12:15:10.554 INFO kablam! su: No module specific data is present
Jul 12 12:15:11.121 INFO running `"docker" "rm" "-f" "c6cea2fa3d85850429fbd3ee1d590d94735794dc12f583c902409af50b4f6244"`
Jul 12 12:15:11.329 INFO blam! c6cea2fa3d85850429fbd3ee1d590d94735794dc12f583c902409af50b4f6244