Sep 04 18:51:15.457 INFO checking elementtree-0.4.0 against try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0 for pr-53893
Sep 04 18:51:15.457 INFO running: cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets
Sep 04 18:51:15.457 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53893/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-3/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/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 +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 18:51:15.650 INFO blam! 5fb255fd0fa9a2acf867d21e6895500e7a0468255e1b8025ae09caad3b05728b
Sep 04 18:51:15.651 INFO running `"docker" "start" "-a" "5fb255fd0fa9a2acf867d21e6895500e7a0468255e1b8025ae09caad3b05728b"`
Sep 04 18:51:16.344 INFO kablam!     Checking elementtree v0.4.0 (file:///source)
Sep 04 18:51:20.321 INFO kablam! warning: variable does not need to be mutable
Sep 04 18:51:20.321 INFO kablam!    --> tests/test_basic.rs:138:13
Sep 04 18:51:20.321 INFO kablam!     |
Sep 04 18:51:20.321 INFO kablam! 138 |         let mut list = root.append_new_child("{demo}list");
Sep 04 18:51:20.321 INFO kablam!     |             ----^^^^
Sep 04 18:51:20.321 INFO kablam!     |             |
Sep 04 18:51:20.321 INFO kablam!     |             help: remove this `mut`
Sep 04 18:51:20.321 INFO kablam!     |
Sep 04 18:51:20.321 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 04 18:51:20.321 INFO kablam! 
Sep 04 18:51:20.329 INFO kablam! warning: variable does not need to be mutable
Sep 04 18:51:20.329 INFO kablam!    --> tests/test_basic.rs:183:13
Sep 04 18:51:20.329 INFO kablam!     |
Sep 04 18:51:20.329 INFO kablam! 183 |         let mut list = root.append_new_child("{demo}list");
Sep 04 18:51:20.329 INFO kablam!     |             ----^^^^
Sep 04 18:51:20.329 INFO kablam!     |             |
Sep 04 18:51:20.329 INFO kablam!     |             help: remove this `mut`
Sep 04 18:51:20.329 INFO kablam! 
Sep 04 18:51:20.332 INFO kablam! warning: variable does not need to be mutable
Sep 04 18:51:20.332 INFO kablam!    --> tests/test_basic.rs:210:13
Sep 04 18:51:20.332 INFO kablam!     |
Sep 04 18:51:20.333 INFO kablam! 210 |         let mut list = root.append_new_child("{demo}list");
Sep 04 18:51:20.333 INFO kablam!     |             ----^^^^
Sep 04 18:51:20.333 INFO kablam!     |             |
Sep 04 18:51:20.333 INFO kablam!     |             help: remove this `mut`
Sep 04 18:51:20.333 INFO kablam! 
Sep 04 18:51:20.335 INFO kablam! warning: variable does not need to be mutable
Sep 04 18:51:20.335 INFO kablam!    --> tests/test_basic.rs:238:13
Sep 04 18:51:20.335 INFO kablam!     |
Sep 04 18:51:20.335 INFO kablam! 238 |         let mut list = root.append_new_child("{demo}list");
Sep 04 18:51:20.335 INFO kablam!     |             ----^^^^
Sep 04 18:51:20.335 INFO kablam!     |             |
Sep 04 18:51:20.335 INFO kablam!     |             help: remove this `mut`
Sep 04 18:51:20.335 INFO kablam! 
Sep 04 18:51:20.338 INFO kablam! warning: variable does not need to be mutable
Sep 04 18:51:20.338 INFO kablam!    --> tests/test_basic.rs:266:13
Sep 04 18:51:20.338 INFO kablam!     |
Sep 04 18:51:20.338 INFO kablam! 266 |         let mut list = root.append_new_child("{demo}list");
Sep 04 18:51:20.338 INFO kablam!     |             ----^^^^
Sep 04 18:51:20.338 INFO kablam!     |             |
Sep 04 18:51:20.338 INFO kablam!     |             help: remove this `mut`
Sep 04 18:51:20.338 INFO kablam! 
Sep 04 18:51:20.363 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.06s
Sep 04 18:51:20.370 INFO kablam! su: No module specific data is present
Sep 04 18:51:20.876 INFO running `"docker" "rm" "-f" "5fb255fd0fa9a2acf867d21e6895500e7a0468255e1b8025ae09caad3b05728b"`
Sep 04 18:51:20.969 INFO blam! 5fb255fd0fa9a2acf867d21e6895500e7a0468255e1b8025ae09caad3b05728b