Sep 14 17:08:54.146 INFO checking elementtree-0.4.0 against try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0 for pr-53578-1
Sep 14 17:08:54.147 INFO running: cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets
Sep 14 17:08:54.147 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-53578-1/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-4/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/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 +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 17:08:54.494 INFO blam! 7409783571bf4afa3e400dc57b562d7a6e282100c18103d343fde4c2c2f2b522
Sep 14 17:08:54.507 INFO running `"docker" "start" "-a" "7409783571bf4afa3e400dc57b562d7a6e282100c18103d343fde4c2c2f2b522"`
Sep 14 17:08:55.799 INFO kablam! usermod: no changes
Sep 14 17:08:55.965 INFO kablam!     Checking elementtree v0.4.0 (file:///source)
Sep 14 17:08:58.286 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:08:58.286 INFO kablam!    --> tests/test_basic.rs:138:13
Sep 14 17:08:58.286 INFO kablam!     |
Sep 14 17:08:58.286 INFO kablam! 138 |         let mut list = root.append_new_child("{demo}list");
Sep 14 17:08:58.286 INFO kablam!     |             ----^^^^
Sep 14 17:08:58.286 INFO kablam!     |             |
Sep 14 17:08:58.286 INFO kablam!     |             help: remove this `mut`
Sep 14 17:08:58.286 INFO kablam!     |
Sep 14 17:08:58.286 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 14 17:08:58.286 INFO kablam! 
Sep 14 17:08:58.291 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:08:58.291 INFO kablam!    --> tests/test_basic.rs:183:13
Sep 14 17:08:58.291 INFO kablam!     |
Sep 14 17:08:58.291 INFO kablam! 183 |         let mut list = root.append_new_child("{demo}list");
Sep 14 17:08:58.291 INFO kablam!     |             ----^^^^
Sep 14 17:08:58.291 INFO kablam!     |             |
Sep 14 17:08:58.291 INFO kablam!     |             help: remove this `mut`
Sep 14 17:08:58.291 INFO kablam! 
Sep 14 17:08:58.294 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:08:58.295 INFO kablam!    --> tests/test_basic.rs:210:13
Sep 14 17:08:58.295 INFO kablam!     |
Sep 14 17:08:58.295 INFO kablam! 210 |         let mut list = root.append_new_child("{demo}list");
Sep 14 17:08:58.295 INFO kablam!     |             ----^^^^
Sep 14 17:08:58.295 INFO kablam!     |             |
Sep 14 17:08:58.295 INFO kablam!     |             help: remove this `mut`
Sep 14 17:08:58.295 INFO kablam! 
Sep 14 17:08:58.297 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:08:58.297 INFO kablam!    --> tests/test_basic.rs:238:13
Sep 14 17:08:58.297 INFO kablam!     |
Sep 14 17:08:58.297 INFO kablam! 238 |         let mut list = root.append_new_child("{demo}list");
Sep 14 17:08:58.297 INFO kablam!     |             ----^^^^
Sep 14 17:08:58.297 INFO kablam!     |             |
Sep 14 17:08:58.297 INFO kablam!     |             help: remove this `mut`
Sep 14 17:08:58.297 INFO kablam! 
Sep 14 17:08:58.298 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:08:58.298 INFO kablam!    --> tests/test_basic.rs:266:13
Sep 14 17:08:58.298 INFO kablam!     |
Sep 14 17:08:58.298 INFO kablam! 266 |         let mut list = root.append_new_child("{demo}list");
Sep 14 17:08:58.298 INFO kablam!     |             ----^^^^
Sep 14 17:08:58.298 INFO kablam!     |             |
Sep 14 17:08:58.298 INFO kablam!     |             help: remove this `mut`
Sep 14 17:08:58.298 INFO kablam! 
Sep 14 17:08:58.336 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.50s
Sep 14 17:08:58.355 INFO kablam! su: No module specific data is present
Sep 14 17:08:59.149 INFO running `"docker" "rm" "-f" "7409783571bf4afa3e400dc57b562d7a6e282100c18103d343fde4c2c2f2b522"`
Sep 14 17:08:59.395 INFO blam! 7409783571bf4afa3e400dc57b562d7a6e282100c18103d343fde4c2c2f2b522