Sep 14 13:20:44.639 INFO checking maze-0.1.2 against try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0 for pr-53578-1
Sep 14 13:20:44.639 INFO running: cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets
Sep 14 13:20:44.639 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 13:20:44.758 INFO blam! 90e079c635c3f86bf5440847bec46792b4fbbf9c656a81141b1cc77aaf7ac93d
Sep 14 13:20:44.759 INFO running `"docker" "start" "-a" "90e079c635c3f86bf5440847bec46792b4fbbf9c656a81141b1cc77aaf7ac93d"`
Sep 14 13:20:45.455 INFO kablam! usermod: no changes
Sep 14 13:20:45.676 INFO kablam!     Checking css-color-parser v0.1.2
Sep 14 13:20:45.678 INFO kablam!     Checking png v0.5.2
Sep 14 13:20:45.679 INFO kablam!     Checking hyper v0.9.12
Sep 14 13:20:46.630 INFO kablam!     Checking image v0.10.4
Sep 14 13:20:49.434 INFO kablam!     Checking iron v0.4.0
Sep 14 13:20:51.236 INFO kablam!     Checking persistent v0.2.1
Sep 14 13:20:51.236 INFO kablam!     Checking router v0.4.0
Sep 14 13:20:52.043 INFO kablam!     Checking imageproc v0.6.1
Sep 14 13:20:52.471 INFO kablam!     Checking bodyparser v0.4.1
Sep 14 13:20:53.731 INFO kablam!     Checking urlencoded v0.4.1
Sep 14 13:20:55.278 INFO kablam!     Checking maze v0.1.2 (file:///source)
Sep 14 13:20:57.610 INFO kablam! warning: variable does not need to be mutable
Sep 14 13:20:57.610 INFO kablam!    --> src/types/grid.rs:191:13
Sep 14 13:20:57.610 INFO kablam!     |
Sep 14 13:20:57.610 INFO kablam! 191 |         let mut grid = self;
Sep 14 13:20:57.610 INFO kablam!     |             ----^^^^
Sep 14 13:20:57.610 INFO kablam!     |             |
Sep 14 13:20:57.610 INFO kablam!     |             help: remove this `mut`
Sep 14 13:20:57.610 INFO kablam!     |
Sep 14 13:20:57.610 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 14 13:20:57.610 INFO kablam! 
Sep 14 13:20:57.619 INFO kablam! warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Sep 14 13:20:57.619 INFO kablam!  --> src/lib.rs:2:12
Sep 14 13:20:57.619 INFO kablam!   |
Sep 14 13:20:57.619 INFO kablam! 2 | #![feature(proc_macro)]
Sep 14 13:20:57.619 INFO kablam!   |            ^^^^^^^^^^
Sep 14 13:20:57.619 INFO kablam!   |
Sep 14 13:20:57.619 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 14 13:20:57.619 INFO kablam! 
Sep 14 13:20:57.690 INFO kablam! warning: variable does not need to be mutable
Sep 14 13:20:57.691 INFO kablam!    --> src/types/grid.rs:191:13
Sep 14 13:20:57.691 INFO kablam!     |
Sep 14 13:20:57.691 INFO kablam! 191 |         let mut grid = self;
Sep 14 13:20:57.691 INFO kablam!     |             ----^^^^
Sep 14 13:20:57.691 INFO kablam!     |             |
Sep 14 13:20:57.691 INFO kablam!     |             help: remove this `mut`
Sep 14 13:20:57.691 INFO kablam!     |
Sep 14 13:20:57.691 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 14 13:20:57.691 INFO kablam! 
Sep 14 13:20:57.699 INFO kablam! warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Sep 14 13:20:57.699 INFO kablam!  --> src/lib.rs:2:12
Sep 14 13:20:57.699 INFO kablam!   |
Sep 14 13:20:57.699 INFO kablam! 2 | #![feature(proc_macro)]
Sep 14 13:20:57.699 INFO kablam!   |            ^^^^^^^^^^
Sep 14 13:20:57.699 INFO kablam!   |
Sep 14 13:20:57.699 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 14 13:20:57.699 INFO kablam! 
Sep 14 13:20:59.848 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 14.38s
Sep 14 13:20:59.866 INFO kablam! su: No module specific data is present
Sep 14 13:21:00.287 INFO running `"docker" "rm" "-f" "90e079c635c3f86bf5440847bec46792b4fbbf9c656a81141b1cc77aaf7ac93d"`
Sep 14 13:21:00.411 INFO blam! 90e079c635c3f86bf5440847bec46792b4fbbf9c656a81141b1cc77aaf7ac93d