Sep 06 08:48:37.121 INFO checking circular-0.2.0 against try#51ff957df5095d92d1d3d4682207ee8b7ad408a8 for pr-53854
Sep 06 08:48:37.121 INFO running: cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets
Sep 06 08:48:37.121 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-53854/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-6/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/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 +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 08:48:37.262 INFO blam! 20b18efabe65974e5156ddb2f9c18088ca1eca5da4611864e741b37e6794d694
Sep 06 08:48:37.263 INFO running `"docker" "start" "-a" "20b18efabe65974e5156ddb2f9c18088ca1eca5da4611864e741b37e6794d694"`
Sep 06 08:48:38.316 INFO kablam! usermod: no changes
Sep 06 08:48:38.339 INFO kablam!     Checking circular v0.2.0 (file:///source)
Sep 06 08:48:38.692 INFO kablam! warning: unused import: `std::str`
Sep 06 08:48:38.692 INFO kablam!    --> src/lib.rs:387:7
Sep 06 08:48:38.692 INFO kablam!     |
Sep 06 08:48:38.692 INFO kablam! 387 |   use std::str;
Sep 06 08:48:38.692 INFO kablam!     |       ^^^^^^^^
Sep 06 08:48:38.692 INFO kablam!     |
Sep 06 08:48:38.692 INFO kablam!     = note: #[warn(unused_imports)] on by default
Sep 06 08:48:38.692 INFO kablam! 
Sep 06 08:48:39.031 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Sep 06 08:48:39.035 INFO kablam! su: No module specific data is present
Sep 06 08:48:39.943 INFO running `"docker" "rm" "-f" "20b18efabe65974e5156ddb2f9c18088ca1eca5da4611864e741b37e6794d694"`
Sep 06 08:48:40.058 INFO blam! 20b18efabe65974e5156ddb2f9c18088ca1eca5da4611864e741b37e6794d694