Sep 06 06:59:08.138 INFO checking floyd-warshall-0.0.3 against try#51ff957df5095d92d1d3d4682207ee8b7ad408a8 for pr-53854
Sep 06 06:59:08.138 INFO running: cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets
Sep 06 06:59:08.139 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53854/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-2/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 06:59:08.380 INFO blam! 7fd74a4384259a1e29d6f1deadf9756d15bd3c9496c9c15da26e6947dd1a1544
Sep 06 06:59:08.383 INFO running `"docker" "start" "-a" "7fd74a4384259a1e29d6f1deadf9756d15bd3c9496c9c15da26e6947dd1a1544"`
Sep 06 06:59:09.556 INFO kablam! usermod: no changes
Sep 06 06:59:09.635 INFO kablam!     Checking floyd-warshall v0.0.3 (file:///source)
Sep 06 06:59:10.134 INFO kablam! warning: unused import: `std::fmt`
Sep 06 06:59:10.134 INFO kablam!  --> src/matrices.rs:1:5
Sep 06 06:59:10.134 INFO kablam!   |
Sep 06 06:59:10.134 INFO kablam! 1 | use std::fmt;
Sep 06 06:59:10.134 INFO kablam!   |     ^^^^^^^^
Sep 06 06:59:10.134 INFO kablam!   |
Sep 06 06:59:10.134 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 06 06:59:10.134 INFO kablam! 
Sep 06 06:59:10.134 INFO kablam! warning: unused import: `std::fmt::Debug`
Sep 06 06:59:10.134 INFO kablam!  --> src/matrices.rs:2:5
Sep 06 06:59:10.134 INFO kablam!   |
Sep 06 06:59:10.134 INFO kablam! 2 | use std::fmt::Debug;
Sep 06 06:59:10.134 INFO kablam!   |     ^^^^^^^^^^^^^^^
Sep 06 06:59:10.134 INFO kablam! 
Sep 06 06:59:10.246 INFO kablam! warning: unused import: `std::fmt`
Sep 06 06:59:10.246 INFO kablam!  --> src/matrices.rs:1:5
Sep 06 06:59:10.246 INFO kablam!   |
Sep 06 06:59:10.246 INFO kablam! 1 | use std::fmt;
Sep 06 06:59:10.246 INFO kablam!   |     ^^^^^^^^
Sep 06 06:59:10.246 INFO kablam!   |
Sep 06 06:59:10.246 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 06 06:59:10.246 INFO kablam! 
Sep 06 06:59:10.246 INFO kablam! warning: unused import: `std::fmt::Debug`
Sep 06 06:59:10.246 INFO kablam!  --> src/matrices.rs:2:5
Sep 06 06:59:10.246 INFO kablam!   |
Sep 06 06:59:10.246 INFO kablam! 2 | use std::fmt::Debug;
Sep 06 06:59:10.246 INFO kablam!   |     ^^^^^^^^^^^^^^^
Sep 06 06:59:10.246 INFO kablam! 
Sep 06 06:59:10.256 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 06 06:59:10.256 INFO kablam!  --> src/lib.rs:4:12
Sep 06 06:59:10.256 INFO kablam!   |
Sep 06 06:59:10.256 INFO kablam! 4 | #![feature(conservative_impl_trait)]
Sep 06 06:59:10.256 INFO kablam!   |            ^^^^^^^^^^^^^^^^^^^^^^^
Sep 06 06:59:10.256 INFO kablam!   |
Sep 06 06:59:10.256 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 06 06:59:10.256 INFO kablam! 
Sep 06 06:59:10.489 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 06 06:59:10.489 INFO kablam!  --> src/lib.rs:4:12
Sep 06 06:59:10.489 INFO kablam!   |
Sep 06 06:59:10.489 INFO kablam! 4 | #![feature(conservative_impl_trait)]
Sep 06 06:59:10.489 INFO kablam!   |            ^^^^^^^^^^^^^^^^^^^^^^^
Sep 06 06:59:10.489 INFO kablam!   |
Sep 06 06:59:10.489 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 06 06:59:10.489 INFO kablam! 
Sep 06 06:59:10.515 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
Sep 06 06:59:10.517 INFO kablam! su: No module specific data is present
Sep 06 06:59:11.200 INFO running `"docker" "rm" "-f" "7fd74a4384259a1e29d6f1deadf9756d15bd3c9496c9c15da26e6947dd1a1544"`
Sep 06 06:59:11.276 INFO blam! 7fd74a4384259a1e29d6f1deadf9756d15bd3c9496c9c15da26e6947dd1a1544