Sep 01 20:39:44.887 INFO checking floyd-warshall-0.0.3 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 20:39:44.887 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 20:39:44.887 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-2/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 20:39:45.035 INFO blam! c97e64fc7979481fbe62bad5d2d6cb3f2497b3cfcadb91fbf9913def8685b097
Sep 01 20:39:45.037 INFO running `"docker" "start" "-a" "c97e64fc7979481fbe62bad5d2d6cb3f2497b3cfcadb91fbf9913def8685b097"`
Sep 01 20:39:45.676 INFO kablam!     Checking floyd-warshall v0.0.3 (file:///source)
Sep 01 20:39:46.253 INFO kablam! warning: unused import: `std::fmt`
Sep 01 20:39:46.253 INFO kablam!  --> src/matrices.rs:1:5
Sep 01 20:39:46.253 INFO kablam!   |
Sep 01 20:39:46.253 INFO kablam! 1 | use std::fmt;
Sep 01 20:39:46.253 INFO kablam!   |     ^^^^^^^^
Sep 01 20:39:46.253 INFO kablam!   |
Sep 01 20:39:46.253 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 01 20:39:46.253 INFO kablam! 
Sep 01 20:39:46.253 INFO kablam! warning: unused import: `std::fmt::Debug`
Sep 01 20:39:46.253 INFO kablam!  --> src/matrices.rs:2:5
Sep 01 20:39:46.253 INFO kablam!   |
Sep 01 20:39:46.253 INFO kablam! 2 | use std::fmt::Debug;
Sep 01 20:39:46.253 INFO kablam!   |     ^^^^^^^^^^^^^^^
Sep 01 20:39:46.253 INFO kablam! 
Sep 01 20:39:46.426 INFO kablam! warning: unused import: `std::fmt`
Sep 01 20:39:46.426 INFO kablam!  --> src/matrices.rs:1:5
Sep 01 20:39:46.426 INFO kablam!   |
Sep 01 20:39:46.426 INFO kablam! 1 | use std::fmt;
Sep 01 20:39:46.426 INFO kablam!   |     ^^^^^^^^
Sep 01 20:39:46.427 INFO kablam!   |
Sep 01 20:39:46.427 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 01 20:39:46.427 INFO kablam! 
Sep 01 20:39:46.427 INFO kablam! warning: unused import: `std::fmt::Debug`
Sep 01 20:39:46.427 INFO kablam!  --> src/matrices.rs:2:5
Sep 01 20:39:46.427 INFO kablam!   |
Sep 01 20:39:46.427 INFO kablam! 2 | use std::fmt::Debug;
Sep 01 20:39:46.427 INFO kablam!   |     ^^^^^^^^^^^^^^^
Sep 01 20:39:46.427 INFO kablam! 
Sep 01 20:39:46.437 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 01 20:39:46.437 INFO kablam!  --> src/lib.rs:4:12
Sep 01 20:39:46.437 INFO kablam!   |
Sep 01 20:39:46.437 INFO kablam! 4 | #![feature(conservative_impl_trait)]
Sep 01 20:39:46.437 INFO kablam!   |            ^^^^^^^^^^^^^^^^^^^^^^^
Sep 01 20:39:46.437 INFO kablam!   |
Sep 01 20:39:46.437 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 01 20:39:46.437 INFO kablam! 
Sep 01 20:39:46.787 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 01 20:39:46.787 INFO kablam!  --> src/lib.rs:4:12
Sep 01 20:39:46.787 INFO kablam!   |
Sep 01 20:39:46.787 INFO kablam! 4 | #![feature(conservative_impl_trait)]
Sep 01 20:39:46.787 INFO kablam!   |            ^^^^^^^^^^^^^^^^^^^^^^^
Sep 01 20:39:46.787 INFO kablam!   |
Sep 01 20:39:46.787 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 01 20:39:46.787 INFO kablam! 
Sep 01 20:39:46.805 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
Sep 01 20:39:46.808 INFO kablam! su: No module specific data is present
Sep 01 20:39:47.226 INFO running `"docker" "rm" "-f" "c97e64fc7979481fbe62bad5d2d6cb3f2497b3cfcadb91fbf9913def8685b097"`
Sep 01 20:39:47.323 INFO blam! c97e64fc7979481fbe62bad5d2d6cb3f2497b3cfcadb91fbf9913def8685b097