Sep 19 21:41:58.998 INFO checking nqueens-0.1.2 against master#ff6422d7a392acfc8af28994d65af2bbaecea4f6 for pr-54346
Sep 19 21:41:58.998 INFO running: cargo +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets
Sep 19 21:41:58.999 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54346/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-4/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/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 +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 21:41:59.166 INFO blam! e79f0e886869056fb07467c87392c4db466ad925ff2b9708a749ea6f932c8e4e
Sep 19 21:41:59.168 INFO running `"docker" "start" "-a" "e79f0e886869056fb07467c87392c4db466ad925ff2b9708a749ea6f932c8e4e"`
Sep 19 21:41:59.862 INFO kablam! usermod: no changes
Sep 19 21:41:59.956 INFO kablam!     Checking pretty_assertions v0.3.4
Sep 19 21:41:59.956 INFO kablam!     Checking nqueens v0.1.2 (/source)
Sep 19 21:42:00.695 INFO kablam! warning: unused `#[macro_use]` import
Sep 19 21:42:00.695 INFO kablam!  --> src/lib.rs:2:1
Sep 19 21:42:00.695 INFO kablam!   |
Sep 19 21:42:00.695 INFO kablam! 2 | #[macro_use]
Sep 19 21:42:00.695 INFO kablam!   | ^^^^^^^^^^^^
Sep 19 21:42:00.695 INFO kablam!   |
Sep 19 21:42:00.695 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 19 21:42:00.695 INFO kablam! 
Sep 19 21:42:00.927 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
Sep 19 21:42:00.932 INFO kablam! su: No module specific data is present
Sep 19 21:42:01.485 INFO running `"docker" "rm" "-f" "e79f0e886869056fb07467c87392c4db466ad925ff2b9708a749ea6f932c8e4e"`
Sep 19 21:42:01.572 INFO blam! e79f0e886869056fb07467c87392c4db466ad925ff2b9708a749ea6f932c8e4e