Sep 21 10:21:03.894 INFO checking floyd-warshall-0.0.3 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 10:21:03.894 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 10:21:03.894 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-0/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 10:21:04.047 INFO blam! b2fed145d4d2f70adc063e4462c6d944dff54281df673548b4847269d1a9f22c
Sep 21 10:21:04.049 INFO running `"docker" "start" "-a" "b2fed145d4d2f70adc063e4462c6d944dff54281df673548b4847269d1a9f22c"`
Sep 21 10:21:05.014 INFO kablam! usermod: no changes
Sep 21 10:21:05.071 INFO kablam!     Checking text_io v0.1.7
Sep 21 10:21:05.072 INFO kablam!     Checking floyd-warshall v0.0.3 (/source)
Sep 21 10:21:05.341 INFO kablam! warning: unused import: `std::fmt`
Sep 21 10:21:05.341 INFO kablam!  --> src/matrices.rs:1:5
Sep 21 10:21:05.341 INFO kablam!   |
Sep 21 10:21:05.341 INFO kablam! 1 | use std::fmt;
Sep 21 10:21:05.341 INFO kablam!   |     ^^^^^^^^
Sep 21 10:21:05.341 INFO kablam!   |
Sep 21 10:21:05.341 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 21 10:21:05.341 INFO kablam! 
Sep 21 10:21:05.341 INFO kablam! warning: unused import: `std::fmt::Debug`
Sep 21 10:21:05.341 INFO kablam!  --> src/matrices.rs:2:5
Sep 21 10:21:05.341 INFO kablam!   |
Sep 21 10:21:05.341 INFO kablam! 2 | use std::fmt::Debug;
Sep 21 10:21:05.341 INFO kablam!   |     ^^^^^^^^^^^^^^^
Sep 21 10:21:05.341 INFO kablam! 
Sep 21 10:21:05.460 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 21 10:21:05.460 INFO kablam!  --> src/lib.rs:4:12
Sep 21 10:21:05.460 INFO kablam!   |
Sep 21 10:21:05.460 INFO kablam! 4 | #![feature(conservative_impl_trait)]
Sep 21 10:21:05.460 INFO kablam!   |            ^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 10:21:05.460 INFO kablam!   |
Sep 21 10:21:05.460 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 21 10:21:05.460 INFO kablam! 
Sep 21 10:21:05.756 INFO kablam! warning: unused import: `std::fmt`
Sep 21 10:21:05.756 INFO kablam!  --> src/matrices.rs:1:5
Sep 21 10:21:05.756 INFO kablam!   |
Sep 21 10:21:05.756 INFO kablam! 1 | use std::fmt;
Sep 21 10:21:05.756 INFO kablam!   |     ^^^^^^^^
Sep 21 10:21:05.756 INFO kablam!   |
Sep 21 10:21:05.756 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 21 10:21:05.756 INFO kablam! 
Sep 21 10:21:05.756 INFO kablam! warning: unused import: `std::fmt::Debug`
Sep 21 10:21:05.756 INFO kablam!  --> src/matrices.rs:2:5
Sep 21 10:21:05.756 INFO kablam!   |
Sep 21 10:21:05.756 INFO kablam! 2 | use std::fmt::Debug;
Sep 21 10:21:05.756 INFO kablam!   |     ^^^^^^^^^^^^^^^
Sep 21 10:21:05.756 INFO kablam! 
Sep 21 10:21:06.006 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 21 10:21:06.006 INFO kablam!  --> src/lib.rs:4:12
Sep 21 10:21:06.006 INFO kablam!   |
Sep 21 10:21:06.006 INFO kablam! 4 | #![feature(conservative_impl_trait)]
Sep 21 10:21:06.006 INFO kablam!   |            ^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 10:21:06.006 INFO kablam!   |
Sep 21 10:21:06.006 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 21 10:21:06.006 INFO kablam! 
Sep 21 10:21:06.038 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
Sep 21 10:21:06.050 INFO kablam! su: No module specific data is present
Sep 21 10:21:06.703 INFO running `"docker" "rm" "-f" "b2fed145d4d2f70adc063e4462c6d944dff54281df673548b4847269d1a9f22c"`
Sep 21 10:21:06.768 INFO blam! b2fed145d4d2f70adc063e4462c6d944dff54281df673548b4847269d1a9f22c