Sep 21 12:52:42.186 INFO checking blc-0.6.0 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 12:52:42.186 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 12:52:42.186 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-7/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 12:52:42.438 INFO blam! a2e30c3615fc47c38de21f5efc85df4d23ec68629da76731df223c9e0beab8ea
Sep 21 12:52:42.440 INFO running `"docker" "start" "-a" "a2e30c3615fc47c38de21f5efc85df4d23ec68629da76731df223c9e0beab8ea"`
Sep 21 12:52:43.760 INFO kablam! usermod: no changes
Sep 21 12:52:43.854 INFO kablam!     Checking lambda_calculus v2.2.0
Sep 21 12:52:45.094 INFO kablam!     Checking blc v0.6.0 (/source)
Sep 21 12:52:45.430 INFO kablam! warning: unused `#[macro_use]` import
Sep 21 12:52:45.430 INFO kablam!   --> src/lib.rs:42:1
Sep 21 12:52:45.430 INFO kablam!    |
Sep 21 12:52:45.430 INFO kablam! 42 | #[macro_use]
Sep 21 12:52:45.430 INFO kablam!    | ^^^^^^^^^^^^
Sep 21 12:52:45.430 INFO kablam!    |
Sep 21 12:52:45.430 INFO kablam!    = note: #[warn(unused_imports)] on by default
Sep 21 12:52:45.430 INFO kablam! 
Sep 21 12:52:47.208 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.41s
Sep 21 12:52:47.212 INFO kablam! su: No module specific data is present
Sep 21 12:52:48.200 INFO running `"docker" "rm" "-f" "a2e30c3615fc47c38de21f5efc85df4d23ec68629da76731df223c9e0beab8ea"`
Sep 21 12:52:48.295 INFO blam! a2e30c3615fc47c38de21f5efc85df4d23ec68629da76731df223c9e0beab8ea