Jul 12 10:25:38.577 INFO checking elementtree-0.4.0 against master#ae5b629efd79de78e6ba7ef493c32857bd7f9cf9 for pr-52234
Jul 12 10:25:38.577 INFO running: cargo +ae5b629efd79de78e6ba7ef493c32857bd7f9cf9-alt check --frozen --all --all-targets
Jul 12 10:25:38.577 INFO creating container for: cargo +ae5b629efd79de78e6ba7ef493c32857bd7f9cf9-alt check --frozen --all --all-targets
Jul 12 10:25:38.577 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-52234/master#ae5b629efd79de78e6ba7ef493c32857bd7f9cf9:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-52234/worker-3/master#ae5b629efd79de78e6ba7ef493c32857bd7f9cf9:/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 +ae5b629efd79de78e6ba7ef493c32857bd7f9cf9-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Jul 12 10:25:38.963 INFO blam! a2f02f8ebf36759bbd27373d3a0fbd02e6ce73a5b2412669c21aa4fd634db39e
Jul 12 10:25:38.969 INFO running `"docker" "start" "-a" "a2f02f8ebf36759bbd27373d3a0fbd02e6ce73a5b2412669c21aa4fd634db39e"`
Jul 12 10:25:40.290 INFO kablam!     Checking elementtree v0.4.0 (file:///source)
Jul 12 10:25:45.380 INFO kablam! warning: variable does not need to be mutable
Jul 12 10:25:45.380 INFO kablam!    --> tests/test_basic.rs:138:13
Jul 12 10:25:45.380 INFO kablam!     |
Jul 12 10:25:45.381 INFO kablam! 138 |         let mut list = root.append_new_child("{demo}list");
Jul 12 10:25:45.381 INFO kablam!     |             ----^^^^
Jul 12 10:25:45.381 INFO kablam!     |             |
Jul 12 10:25:45.381 INFO kablam!     |             help: remove this `mut`
Jul 12 10:25:45.381 INFO kablam!     |
Jul 12 10:25:45.381 INFO kablam!     = note: #[warn(unused_mut)] on by default
Jul 12 10:25:45.382 INFO kablam! 
Jul 12 10:25:45.397 INFO kablam! warning: variable does not need to be mutable
Jul 12 10:25:45.397 INFO kablam!    --> tests/test_basic.rs:183:13
Jul 12 10:25:45.397 INFO kablam!     |
Jul 12 10:25:45.397 INFO kablam! 183 |         let mut list = root.append_new_child("{demo}list");
Jul 12 10:25:45.397 INFO kablam!     |             ----^^^^
Jul 12 10:25:45.397 INFO kablam!     |             |
Jul 12 10:25:45.397 INFO kablam!     |             help: remove this `mut`
Jul 12 10:25:45.406 INFO kablam! 
Jul 12 10:25:45.412 INFO kablam! warning: variable does not need to be mutable
Jul 12 10:25:45.412 INFO kablam!    --> tests/test_basic.rs:210:13
Jul 12 10:25:45.412 INFO kablam!     |
Jul 12 10:25:45.412 INFO kablam! 210 |         let mut list = root.append_new_child("{demo}list");
Jul 12 10:25:45.412 INFO kablam!     |             ----^^^^
Jul 12 10:25:45.412 INFO kablam!     |             |
Jul 12 10:25:45.413 INFO kablam!     |             help: remove this `mut`
Jul 12 10:25:45.413 INFO kablam! 
Jul 12 10:25:45.423 INFO kablam! warning: variable does not need to be mutable
Jul 12 10:25:45.424 INFO kablam!    --> tests/test_basic.rs:238:13
Jul 12 10:25:45.424 INFO kablam!     |
Jul 12 10:25:45.424 INFO kablam! 238 |         let mut list = root.append_new_child("{demo}list");
Jul 12 10:25:45.424 INFO kablam!     |             ----^^^^
Jul 12 10:25:45.424 INFO kablam!     |             |
Jul 12 10:25:45.424 INFO kablam!     |             help: remove this `mut`
Jul 12 10:25:45.424 INFO kablam! 
Jul 12 10:25:45.430 INFO kablam! warning: variable does not need to be mutable
Jul 12 10:25:45.430 INFO kablam!    --> tests/test_basic.rs:266:13
Jul 12 10:25:45.430 INFO kablam!     |
Jul 12 10:25:45.430 INFO kablam! 266 |         let mut list = root.append_new_child("{demo}list");
Jul 12 10:25:45.430 INFO kablam!     |             ----^^^^
Jul 12 10:25:45.430 INFO kablam!     |             |
Jul 12 10:25:45.430 INFO kablam!     |             help: remove this `mut`
Jul 12 10:25:45.430 INFO kablam! 
Jul 12 10:25:45.489 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.33s
Jul 12 10:25:45.499 INFO kablam! su: No module specific data is present
Jul 12 10:25:46.081 INFO running `"docker" "rm" "-f" "a2f02f8ebf36759bbd27373d3a0fbd02e6ce73a5b2412669c21aa4fd634db39e"`
Jul 12 10:25:46.266 INFO blam! a2f02f8ebf36759bbd27373d3a0fbd02e6ce73a5b2412669c21aa4fd634db39e