Sep 20 02:47:39.184 INFO checking difference-2.0.0 against master#ff6422d7a392acfc8af28994d65af2bbaecea4f6 for pr-54346
Sep 20 02:47:39.184 INFO running: cargo +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets
Sep 20 02:47:39.184 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54346/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-3/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 20 02:47:39.556 INFO blam! 6e6fefdec7d90d51e727625dc83db39e4af98638933add7c6b782feed97c71e8
Sep 20 02:47:39.558 INFO running `"docker" "start" "-a" "6e6fefdec7d90d51e727625dc83db39e4af98638933add7c6b782feed97c71e8"`
Sep 20 02:47:42.091 INFO kablam! usermod: no changes
Sep 20 02:47:42.291 INFO kablam!     Checking difference v2.0.0 (/source)
Sep 20 02:47:43.503 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 20 02:47:43.503 INFO kablam!    --> tests/quickcheck.rs:103:9
Sep 20 02:47:43.503 INFO kablam!     |
Sep 20 02:47:43.503 INFO kablam! 103 | #[allow(needless_pass_by_value)]
Sep 20 02:47:43.503 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 20 02:47:43.503 INFO kablam!     |
Sep 20 02:47:43.503 INFO kablam!     = note: #[warn(unknown_lints)] on by default
Sep 20 02:47:43.503 INFO kablam! 
Sep 20 02:47:45.891 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.78s
Sep 20 02:47:45.897 INFO kablam! su: No module specific data is present
Sep 20 02:47:47.079 INFO running `"docker" "rm" "-f" "6e6fefdec7d90d51e727625dc83db39e4af98638933add7c6b782feed97c71e8"`
Sep 20 02:47:47.406 INFO blam! 6e6fefdec7d90d51e727625dc83db39e4af98638933add7c6b782feed97c71e8