Sep 17 21:31:19.896 INFO checking maze-0.1.2 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 17 21:31:19.896 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 17 21:31:19.896 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-1/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/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 +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 17 21:31:20.030 INFO blam! a87f8bed2855dae143fed00e91334b098b843527b048def88f3c9e45b9bdb14e
Sep 17 21:31:20.032 INFO running `"docker" "start" "-a" "a87f8bed2855dae143fed00e91334b098b843527b048def88f3c9e45b9bdb14e"`
Sep 17 21:31:20.914 INFO kablam! usermod: no changes
Sep 17 21:31:21.211 INFO kablam!     Checking css-color-parser v0.1.2
Sep 17 21:31:21.214 INFO kablam!     Checking png v0.5.2
Sep 17 21:31:21.214 INFO kablam!     Checking hyper v0.9.12
Sep 17 21:31:22.336 INFO kablam!     Checking image v0.10.4
Sep 17 21:31:25.919 INFO kablam!     Checking iron v0.4.0
Sep 17 21:31:27.443 INFO kablam!     Checking persistent v0.2.1
Sep 17 21:31:27.443 INFO kablam!     Checking router v0.4.0
Sep 17 21:31:28.818 INFO kablam!     Checking imageproc v0.6.1
Sep 17 21:31:28.930 INFO kablam!     Checking bodyparser v0.4.1
Sep 17 21:31:30.926 INFO kablam!     Checking urlencoded v0.4.1
Sep 17 21:31:32.383 INFO kablam!     Checking maze v0.1.2 (/source)
Sep 17 21:31:34.559 INFO kablam! warning: variable does not need to be mutable
Sep 17 21:31:34.559 INFO kablam!    --> src/types/grid.rs:191:13
Sep 17 21:31:34.559 INFO kablam!     |
Sep 17 21:31:34.559 INFO kablam! 191 |         let mut grid = self;
Sep 17 21:31:34.559 INFO kablam!     |             ----^^^^
Sep 17 21:31:34.559 INFO kablam!     |             |
Sep 17 21:31:34.559 INFO kablam!     |             help: remove this `mut`
Sep 17 21:31:34.559 INFO kablam!     |
Sep 17 21:31:34.559 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 17 21:31:34.559 INFO kablam! 
Sep 17 21:31:34.567 INFO kablam! warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Sep 17 21:31:34.567 INFO kablam!  --> src/lib.rs:2:12
Sep 17 21:31:34.567 INFO kablam!   |
Sep 17 21:31:34.567 INFO kablam! 2 | #![feature(proc_macro)]
Sep 17 21:31:34.567 INFO kablam!   |            ^^^^^^^^^^
Sep 17 21:31:34.567 INFO kablam!   |
Sep 17 21:31:34.567 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 17 21:31:34.567 INFO kablam! 
Sep 17 21:31:34.603 INFO kablam! warning: variable does not need to be mutable
Sep 17 21:31:34.603 INFO kablam!    --> src/types/grid.rs:191:13
Sep 17 21:31:34.603 INFO kablam!     |
Sep 17 21:31:34.603 INFO kablam! 191 |         let mut grid = self;
Sep 17 21:31:34.603 INFO kablam!     |             ----^^^^
Sep 17 21:31:34.603 INFO kablam!     |             |
Sep 17 21:31:34.603 INFO kablam!     |             help: remove this `mut`
Sep 17 21:31:34.603 INFO kablam!     |
Sep 17 21:31:34.603 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 17 21:31:34.603 INFO kablam! 
Sep 17 21:31:34.611 INFO kablam! warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Sep 17 21:31:34.611 INFO kablam!  --> src/lib.rs:2:12
Sep 17 21:31:34.611 INFO kablam!   |
Sep 17 21:31:34.611 INFO kablam! 2 | #![feature(proc_macro)]
Sep 17 21:31:34.611 INFO kablam!   |            ^^^^^^^^^^
Sep 17 21:31:34.611 INFO kablam!   |
Sep 17 21:31:34.611 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 17 21:31:34.611 INFO kablam! 
Sep 17 21:31:36.781 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 15.85s
Sep 17 21:31:36.800 INFO kablam! su: No module specific data is present
Sep 17 21:31:37.427 INFO running `"docker" "rm" "-f" "a87f8bed2855dae143fed00e91334b098b843527b048def88f3c9e45b9bdb14e"`
Sep 17 21:31:37.488 INFO blam! a87f8bed2855dae143fed00e91334b098b843527b048def88f3c9e45b9bdb14e