Oct 31 21:42:52.500 INFO checking sbeckeriv/greedy-color against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Oct 31 21:42:52.500 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-7/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 31 21:42:52.981 INFO blam! 020052d15bf5f9a4aa9e2d532300a45d738421d2570822f234bbd3d8f84b067d
Oct 31 21:42:52.986 INFO running `"docker" "start" "-a" "020052d15bf5f9a4aa9e2d532300a45d738421d2570822f234bbd3d8f84b067d"`
Oct 31 21:42:54.331 INFO kablam! usermod: no changes
Oct 31 21:42:54.428 INFO kablam!    Compiling ruby-sys v0.2.17
Oct 31 21:42:54.433 INFO kablam!     Checking libc v0.2.11
Oct 31 21:42:56.836 INFO kablam!     Checking ruru v0.9.1
Oct 31 21:42:57.528 INFO kablam!     Checking hash_color v0.1.0 (/source)
Oct 31 21:42:57.752 INFO kablam! warning: unused imports: `AnyObject`, `Boolean`, `VM`
Oct 31 21:42:57.753 INFO kablam!  --> src/lib.rs:3:12
Oct 31 21:42:57.754 INFO kablam!   |
Oct 31 21:42:57.755 INFO kablam! 3 | use ruru::{AnyObject, Boolean, Class, Fixnum, Hash, VM, Array};
Oct 31 21:42:57.755 INFO kablam!   |            ^^^^^^^^^  ^^^^^^^                       ^^
Oct 31 21:42:57.756 INFO kablam!   |
Oct 31 21:42:57.757 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 31 21:42:57.757 INFO kablam! 
Oct 31 21:42:57.758 INFO kablam! warning: unused import: `ruru::types::Argc`
Oct 31 21:42:57.759 INFO kablam!  --> src/lib.rs:5:5
Oct 31 21:42:57.759 INFO kablam!   |
Oct 31 21:42:57.760 INFO kablam! 5 | use ruru::types::Argc;
Oct 31 21:42:57.761 INFO kablam!   |     ^^^^^^^^^^^^^^^^^
Oct 31 21:42:57.761 INFO kablam! 
Oct 31 21:42:57.762 INFO kablam! warning: unused import: `HashMap`
Oct 31 21:42:57.763 INFO kablam!  --> src/lib.rs:6:33
Oct 31 21:42:57.763 INFO kablam!   |
Oct 31 21:42:57.764 INFO kablam! 6 | use std::collections::{HashSet, HashMap};
Oct 31 21:42:57.765 INFO kablam!   |                                 ^^^^^^^
Oct 31 21:42:57.765 INFO kablam! 
Oct 31 21:42:57.980 INFO kablam! warning: unused imports: `AnyObject`, `Boolean`, `VM`
Oct 31 21:42:57.980 INFO kablam!  --> src/lib.rs:3:12
Oct 31 21:42:57.980 INFO kablam!   |
Oct 31 21:42:57.980 INFO kablam! 3 | use ruru::{AnyObject, Boolean, Class, Fixnum, Hash, VM, Array};
Oct 31 21:42:57.980 INFO kablam!   |            ^^^^^^^^^  ^^^^^^^                       ^^
Oct 31 21:42:57.980 INFO kablam!   |
Oct 31 21:42:57.980 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 31 21:42:57.980 INFO kablam! 
Oct 31 21:42:57.980 INFO kablam! warning: unused import: `ruru::types::Argc`
Oct 31 21:42:57.980 INFO kablam!  --> src/lib.rs:5:5
Oct 31 21:42:57.980 INFO kablam!   |
Oct 31 21:42:57.980 INFO kablam! 5 | use ruru::types::Argc;
Oct 31 21:42:57.980 INFO kablam!   |     ^^^^^^^^^^^^^^^^^
Oct 31 21:42:57.980 INFO kablam! 
Oct 31 21:42:57.980 INFO kablam! warning: unused import: `HashMap`
Oct 31 21:42:57.980 INFO kablam!  --> src/lib.rs:6:33
Oct 31 21:42:57.980 INFO kablam!   |
Oct 31 21:42:57.980 INFO kablam! 6 | use std::collections::{HashSet, HashMap};
Oct 31 21:42:57.980 INFO kablam!   |                                 ^^^^^^^
Oct 31 21:42:57.980 INFO kablam! 
Oct 31 21:42:58.056 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.69s
Oct 31 21:42:58.060 INFO kablam! su: No module specific data is present
Oct 31 21:42:59.564 INFO running `"docker" "rm" "-f" "020052d15bf5f9a4aa9e2d532300a45d738421d2570822f234bbd3d8f84b067d"`
Oct 31 21:43:00.041 INFO blam! 020052d15bf5f9a4aa9e2d532300a45d738421d2570822f234bbd3d8f84b067d