Oct 13 15:13:42.817 INFO checking floyd-warshall-0.0.3 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 15:13:42.817 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-5/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-5/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 13 15:13:43.229 INFO blam! cecaab98928c632dfbb0ba7b9dede6917141b23ddc37c4177c619644dcf1328f
Oct 13 15:13:43.240 INFO running `"docker" "start" "-a" "cecaab98928c632dfbb0ba7b9dede6917141b23ddc37c4177c619644dcf1328f"`
Oct 13 15:13:44.382 INFO kablam! usermod: no changes
Oct 13 15:13:44.489 INFO kablam!     Checking floyd-warshall v0.0.3 (/source)
Oct 13 15:13:45.985 INFO kablam! warning: unused import: `std::fmt`
Oct 13 15:13:45.988 INFO kablam!  --> src/matrices.rs:1:5
Oct 13 15:13:45.989 INFO kablam!   |
Oct 13 15:13:45.989 INFO kablam! 1 | use std::fmt;
Oct 13 15:13:45.990 INFO kablam!   |     ^^^^^^^^
Oct 13 15:13:45.991 INFO kablam!   |
Oct 13 15:13:45.991 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 13 15:13:45.992 INFO kablam! 
Oct 13 15:13:45.992 INFO kablam! warning: unused import: `std::fmt::Debug`
Oct 13 15:13:45.993 INFO kablam!  --> src/matrices.rs:2:5
Oct 13 15:13:45.994 INFO kablam!   |
Oct 13 15:13:45.994 INFO kablam! 2 | use std::fmt::Debug;
Oct 13 15:13:45.995 INFO kablam!   |     ^^^^^^^^^^^^^^^
Oct 13 15:13:45.996 INFO kablam! 
Oct 13 15:13:46.252 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Oct 13 15:13:46.252 INFO kablam!  --> src/lib.rs:4:12
Oct 13 15:13:46.253 INFO kablam!   |
Oct 13 15:13:46.253 INFO kablam! 4 | #![feature(conservative_impl_trait)]
Oct 13 15:13:46.253 INFO kablam!   |            ^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 15:13:46.253 INFO kablam!   |
Oct 13 15:13:46.253 INFO kablam!   = note: #[warn(stable_features)] on by default
Oct 13 15:13:46.253 INFO kablam! 
Oct 13 15:13:46.590 INFO kablam! warning: unused import: `std::fmt`
Oct 13 15:13:46.590 INFO kablam!  --> src/matrices.rs:1:5
Oct 13 15:13:46.590 INFO kablam!   |
Oct 13 15:13:46.590 INFO kablam! 1 | use std::fmt;
Oct 13 15:13:46.590 INFO kablam!   |     ^^^^^^^^
Oct 13 15:13:46.590 INFO kablam!   |
Oct 13 15:13:46.590 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 13 15:13:46.590 INFO kablam! 
Oct 13 15:13:46.590 INFO kablam! warning: unused import: `std::fmt::Debug`
Oct 13 15:13:46.591 INFO kablam!  --> src/matrices.rs:2:5
Oct 13 15:13:46.591 INFO kablam!   |
Oct 13 15:13:46.591 INFO kablam! 2 | use std::fmt::Debug;
Oct 13 15:13:46.591 INFO kablam!   |     ^^^^^^^^^^^^^^^
Oct 13 15:13:46.591 INFO kablam! 
Oct 13 15:13:46.901 INFO kablam! warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Oct 13 15:13:46.901 INFO kablam!  --> src/lib.rs:4:12
Oct 13 15:13:46.901 INFO kablam!   |
Oct 13 15:13:46.902 INFO kablam! 4 | #![feature(conservative_impl_trait)]
Oct 13 15:13:46.902 INFO kablam!   |            ^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 15:13:46.903 INFO kablam!   |
Oct 13 15:13:46.903 INFO kablam!   = note: #[warn(stable_features)] on by default
Oct 13 15:13:46.904 INFO kablam! 
Oct 13 15:13:46.953 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.52s
Oct 13 15:13:46.960 INFO kablam! su: No module specific data is present
Oct 13 15:13:47.611 INFO running `"docker" "rm" "-f" "cecaab98928c632dfbb0ba7b9dede6917141b23ddc37c4177c619644dcf1328f"`
Oct 13 15:13:47.847 INFO blam! cecaab98928c632dfbb0ba7b9dede6917141b23ddc37c4177c619644dcf1328f