Oct 12 14:17:38.234 INFO checking sbeckeriv/greedy-color against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 14:17:38.234 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-0/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-0/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 12 14:17:38.778 INFO blam! 4f34ce08f634e2b7bd4ba142eab7c2dec6d9448c9cd047c7637b6ab76597a3b7
Oct 12 14:17:38.780 INFO running `"docker" "start" "-a" "4f34ce08f634e2b7bd4ba142eab7c2dec6d9448c9cd047c7637b6ab76597a3b7"`
Oct 12 14:17:40.380 INFO kablam! usermod: no changes
Oct 12 14:17:40.465 INFO kablam!    Compiling ruby-sys v0.2.17
Oct 12 14:17:40.477 INFO kablam!     Checking libc v0.2.11
Oct 12 14:17:42.940 INFO kablam!     Checking ruru v0.9.1
Oct 12 14:17:43.716 INFO kablam!     Checking hash_color v0.1.0 (/source)
Oct 12 14:17:44.301 INFO kablam! warning: unused imports: `AnyObject`, `Boolean`, `VM`
Oct 12 14:17:44.301 INFO kablam!  --> src/lib.rs:3:12
Oct 12 14:17:44.301 INFO kablam!   |
Oct 12 14:17:44.301 INFO kablam! 3 | use ruru::{AnyObject, Boolean, Class, Fixnum, Hash, VM, Array};
Oct 12 14:17:44.302 INFO kablam!   |            ^^^^^^^^^  ^^^^^^^                       ^^
Oct 12 14:17:44.302 INFO kablam!   |
Oct 12 14:17:44.302 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 14:17:44.302 INFO kablam! 
Oct 12 14:17:44.302 INFO kablam! warning: unused import: `ruru::types::Argc`
Oct 12 14:17:44.302 INFO kablam!  --> src/lib.rs:5:5
Oct 12 14:17:44.302 INFO kablam!   |
Oct 12 14:17:44.302 INFO kablam! 5 | use ruru::types::Argc;
Oct 12 14:17:44.302 INFO kablam!   |     ^^^^^^^^^^^^^^^^^
Oct 12 14:17:44.302 INFO kablam! 
Oct 12 14:17:44.302 INFO kablam! warning: unused import: `HashMap`
Oct 12 14:17:44.302 INFO kablam!  --> src/lib.rs:6:33
Oct 12 14:17:44.302 INFO kablam!   |
Oct 12 14:17:44.302 INFO kablam! 6 | use std::collections::{HashSet, HashMap};
Oct 12 14:17:44.304 INFO kablam!   |                                 ^^^^^^^
Oct 12 14:17:44.304 INFO kablam! 
Oct 12 14:17:44.368 INFO kablam! warning: unused imports: `AnyObject`, `Boolean`, `VM`
Oct 12 14:17:44.369 INFO kablam!  --> src/lib.rs:3:12
Oct 12 14:17:44.369 INFO kablam!   |
Oct 12 14:17:44.369 INFO kablam! 3 | use ruru::{AnyObject, Boolean, Class, Fixnum, Hash, VM, Array};
Oct 12 14:17:44.369 INFO kablam!   |            ^^^^^^^^^  ^^^^^^^                       ^^
Oct 12 14:17:44.369 INFO kablam!   |
Oct 12 14:17:44.369 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 14:17:44.369 INFO kablam! 
Oct 12 14:17:44.369 INFO kablam! warning: unused import: `ruru::types::Argc`
Oct 12 14:17:44.369 INFO kablam!  --> src/lib.rs:5:5
Oct 12 14:17:44.369 INFO kablam!   |
Oct 12 14:17:44.369 INFO kablam! 5 | use ruru::types::Argc;
Oct 12 14:17:44.369 INFO kablam!   |     ^^^^^^^^^^^^^^^^^
Oct 12 14:17:44.369 INFO kablam! 
Oct 12 14:17:44.369 INFO kablam! warning: unused import: `HashMap`
Oct 12 14:17:44.369 INFO kablam!  --> src/lib.rs:6:33
Oct 12 14:17:44.369 INFO kablam!   |
Oct 12 14:17:44.369 INFO kablam! 6 | use std::collections::{HashSet, HashMap};
Oct 12 14:17:44.369 INFO kablam!   |                                 ^^^^^^^
Oct 12 14:17:44.369 INFO kablam! 
Oct 12 14:17:44.494 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.09s
Oct 12 14:17:44.497 INFO kablam! su: No module specific data is present
Oct 12 14:17:45.405 INFO running `"docker" "rm" "-f" "4f34ce08f634e2b7bd4ba142eab7c2dec6d9448c9cd047c7637b6ab76597a3b7"`
Oct 12 14:17:45.664 INFO blam! 4f34ce08f634e2b7bd4ba142eab7c2dec6d9448c9cd047c7637b6ab76597a3b7