Sep 06 03:59:18.643 INFO checking maze-0.1.2 against try#51ff957df5095d92d1d3d4682207ee8b7ad408a8 for pr-53854
Sep 06 03:59:18.643 INFO running: cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets
Sep 06 03:59:18.643 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-53854/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-5/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/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 +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 03:59:18.761 INFO blam! 4d72e96295c91ba630887ed1cd108e7fce84815bf231c2d70540fc83779d721b
Sep 06 03:59:18.762 INFO running `"docker" "start" "-a" "4d72e96295c91ba630887ed1cd108e7fce84815bf231c2d70540fc83779d721b"`
Sep 06 03:59:19.692 INFO kablam! usermod: no changes
Sep 06 03:59:19.882 INFO kablam!     Checking css-color-parser v0.1.2
Sep 06 03:59:19.885 INFO kablam!     Checking png v0.5.2
Sep 06 03:59:19.886 INFO kablam!     Checking hyper v0.9.12
Sep 06 03:59:19.886 INFO kablam!     Checking nalgebra v0.5.1
Sep 06 03:59:21.010 INFO kablam!     Checking image v0.10.4
Sep 06 03:59:24.206 INFO kablam!     Checking iron v0.4.0
Sep 06 03:59:27.119 INFO kablam!     Checking persistent v0.2.1
Sep 06 03:59:27.120 INFO kablam!     Checking router v0.4.0
Sep 06 03:59:28.890 INFO kablam!     Checking bodyparser v0.4.1
Sep 06 03:59:30.004 INFO kablam!     Checking urlencoded v0.4.1
Sep 06 03:59:30.754 INFO kablam!     Checking imageproc v0.6.1
Sep 06 03:59:33.540 INFO kablam!     Checking maze v0.1.2 (file:///source)
Sep 06 03:59:35.702 INFO kablam! warning: variable does not need to be mutable
Sep 06 03:59:35.702 INFO kablam!    --> src/types/grid.rs:191:13
Sep 06 03:59:35.702 INFO kablam!     |
Sep 06 03:59:35.702 INFO kablam! 191 |         let mut grid = self;
Sep 06 03:59:35.702 INFO kablam!     |             ----^^^^
Sep 06 03:59:35.702 INFO kablam!     |             |
Sep 06 03:59:35.702 INFO kablam!     |             help: remove this `mut`
Sep 06 03:59:35.702 INFO kablam!     |
Sep 06 03:59:35.702 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 06 03:59:35.702 INFO kablam! 
Sep 06 03:59:35.711 INFO kablam! warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Sep 06 03:59:35.711 INFO kablam!  --> src/lib.rs:2:12
Sep 06 03:59:35.711 INFO kablam!   |
Sep 06 03:59:35.711 INFO kablam! 2 | #![feature(proc_macro)]
Sep 06 03:59:35.711 INFO kablam!   |            ^^^^^^^^^^
Sep 06 03:59:35.711 INFO kablam!   |
Sep 06 03:59:35.711 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 06 03:59:35.711 INFO kablam! 
Sep 06 03:59:35.751 INFO kablam! warning: variable does not need to be mutable
Sep 06 03:59:35.751 INFO kablam!    --> src/types/grid.rs:191:13
Sep 06 03:59:35.751 INFO kablam!     |
Sep 06 03:59:35.751 INFO kablam! 191 |         let mut grid = self;
Sep 06 03:59:35.751 INFO kablam!     |             ----^^^^
Sep 06 03:59:35.751 INFO kablam!     |             |
Sep 06 03:59:35.751 INFO kablam!     |             help: remove this `mut`
Sep 06 03:59:35.751 INFO kablam!     |
Sep 06 03:59:35.751 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 06 03:59:35.751 INFO kablam! 
Sep 06 03:59:35.762 INFO kablam! warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Sep 06 03:59:35.762 INFO kablam!  --> src/lib.rs:2:12
Sep 06 03:59:35.762 INFO kablam!   |
Sep 06 03:59:35.762 INFO kablam! 2 | #![feature(proc_macro)]
Sep 06 03:59:35.762 INFO kablam!   |            ^^^^^^^^^^
Sep 06 03:59:35.762 INFO kablam!   |
Sep 06 03:59:35.762 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 06 03:59:35.763 INFO kablam! 
Sep 06 03:59:37.915 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 18.21s
Sep 06 03:59:37.933 INFO kablam! su: No module specific data is present
Sep 06 03:59:38.668 INFO running `"docker" "rm" "-f" "4d72e96295c91ba630887ed1cd108e7fce84815bf231c2d70540fc83779d721b"`
Sep 06 03:59:38.727 INFO blam! 4d72e96295c91ba630887ed1cd108e7fce84815bf231c2d70540fc83779d721b