Sep 01 09:15:35.255 INFO checking btree-0.1.0 against master#d0d81b7fc1421859ba0218e8a437af29ae3b0967 for pr-53578
Sep 01 09:15:35.255 INFO running: cargo +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets
Sep 01 09:15:35.255 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53578/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-0/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/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=500" "-e" "CMD=cargo +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 09:15:35.434 INFO blam! 9f4cd387a182978583d13eb94417283ad0021ebcc8092800412da878dd148b82
Sep 01 09:15:35.436 INFO running `"docker" "start" "-a" "9f4cd387a182978583d13eb94417283ad0021ebcc8092800412da878dd148b82"`
Sep 01 09:15:36.002 INFO kablam! warning: `panic` setting is ignored for `test` profile
Sep 01 09:15:36.022 INFO kablam!     Checking raw_serde v0.1.4
Sep 01 09:15:46.385 INFO kablam!     Checking btree v0.1.0 (file:///source)
Sep 01 09:15:47.600 INFO kablam! warning: unused variable: `x`
Sep 01 09:15:47.600 INFO kablam!   --> src/lib.rs:26:13
Sep 01 09:15:47.600 INFO kablam!    |
Sep 01 09:15:47.600 INFO kablam! 26 |         let x = t.search(&i.to_string()).unwrap().unwrap();
Sep 01 09:15:47.601 INFO kablam!    |             ^ help: consider using `_x` instead
Sep 01 09:15:47.601 INFO kablam!    |
Sep 01 09:15:47.601 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 01 09:15:47.601 INFO kablam! 
Sep 01 09:15:47.987 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 12.00s
Sep 01 09:15:47.991 INFO kablam! su: No module specific data is present
Sep 01 09:15:48.478 INFO running `"docker" "rm" "-f" "9f4cd387a182978583d13eb94417283ad0021ebcc8092800412da878dd148b82"`
Sep 01 09:15:48.588 INFO blam! 9f4cd387a182978583d13eb94417283ad0021ebcc8092800412da878dd148b82