Sep 10 21:12:26.561 INFO checking circular-0.2.0 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 21:12:26.561 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 21:12:26.561 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-7/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 21:12:26.719 INFO blam! 0399ed4cbf283e5e4f59a732a50d83a1c66db16e80942c88a5f4b6586bfb4c6d
Sep 10 21:12:26.721 INFO running `"docker" "start" "-a" "0399ed4cbf283e5e4f59a732a50d83a1c66db16e80942c88a5f4b6586bfb4c6d"`
Sep 10 21:12:27.977 INFO kablam! usermod: no changes
Sep 10 21:12:28.024 INFO kablam!     Checking circular v0.2.0 (file:///source)
Sep 10 21:12:28.708 INFO kablam! warning: unused import: `std::str`
Sep 10 21:12:28.708 INFO kablam!    --> src/lib.rs:387:7
Sep 10 21:12:28.708 INFO kablam!     |
Sep 10 21:12:28.708 INFO kablam! 387 |   use std::str;
Sep 10 21:12:28.708 INFO kablam!     |       ^^^^^^^^
Sep 10 21:12:28.708 INFO kablam!     |
Sep 10 21:12:28.708 INFO kablam!     = note: #[warn(unused_imports)] on by default
Sep 10 21:12:28.708 INFO kablam! 
Sep 10 21:12:29.042 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
Sep 10 21:12:29.048 INFO kablam! su: No module specific data is present
Sep 10 21:12:29.997 INFO running `"docker" "rm" "-f" "0399ed4cbf283e5e4f59a732a50d83a1c66db16e80942c88a5f4b6586bfb4c6d"`
Sep 10 21:12:30.110 INFO blam! 0399ed4cbf283e5e4f59a732a50d83a1c66db16e80942c88a5f4b6586bfb4c6d