Sep 20 04:29:25.066 INFO checking difference-2.0.0 against try#135b4cd023a753409d01e43b0f23d22a899feeeb for pr-54352
Sep 20 04:29:25.066 INFO running: cargo +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets
Sep 20 04:29:25.066 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54352/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-4/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/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 +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 04:29:25.272 INFO blam! c72dfec188f34f15268df0aa168347278f1e2e83aa2892734291c50f16708d3e
Sep 20 04:29:25.274 INFO running `"docker" "start" "-a" "c72dfec188f34f15268df0aa168347278f1e2e83aa2892734291c50f16708d3e"`
Sep 20 04:29:26.741 INFO kablam! usermod: no changes
Sep 20 04:29:26.882 INFO kablam!     Checking difference v2.0.0 (/source)
Sep 20 04:29:28.146 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 20 04:29:28.146 INFO kablam!    --> tests/quickcheck.rs:103:9
Sep 20 04:29:28.146 INFO kablam!     |
Sep 20 04:29:28.146 INFO kablam! 103 | #[allow(needless_pass_by_value)]
Sep 20 04:29:28.146 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 20 04:29:28.146 INFO kablam!     |
Sep 20 04:29:28.147 INFO kablam!     = note: #[warn(unknown_lints)] on by default
Sep 20 04:29:28.147 INFO kablam! 
Sep 20 04:29:30.231 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.46s
Sep 20 04:29:30.242 INFO kablam! su: No module specific data is present
Sep 20 04:29:31.131 INFO running `"docker" "rm" "-f" "c72dfec188f34f15268df0aa168347278f1e2e83aa2892734291c50f16708d3e"`
Sep 20 04:29:31.252 INFO blam! c72dfec188f34f15268df0aa168347278f1e2e83aa2892734291c50f16708d3e