Oct 13 02:53:59.308 INFO checking Razakhel/rs-ds against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 02:53:59.316 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-7/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-7/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 02:53:59.744 INFO blam! b45334d67d062c233454980c73f8e13a7d0f377f04201fbe889ed389c9b1dc6b
Oct 13 02:53:59.754 INFO running `"docker" "start" "-a" "b45334d67d062c233454980c73f8e13a7d0f377f04201fbe889ed389c9b1dc6b"`
Oct 13 02:54:00.690 INFO kablam! usermod: no changes
Oct 13 02:54:00.760 INFO kablam!     Checking rs-ds v0.1.0 (/source)
Oct 13 02:54:01.460 INFO kablam! warning: struct is never constructed: `IntoIter`
Oct 13 02:54:01.460 INFO kablam!   --> src/linked_list.rs:16:1
Oct 13 02:54:01.460 INFO kablam!    |
Oct 13 02:54:01.460 INFO kablam! 16 | pub struct IntoIter<T>(List<T>);
Oct 13 02:54:01.460 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 02:54:01.460 INFO kablam!    |
Oct 13 02:54:01.460 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 13 02:54:01.460 INFO kablam! 
Oct 13 02:54:01.460 INFO kablam! warning: method is never used: `peek`
Oct 13 02:54:01.460 INFO kablam!   --> src/linked_list.rs:38:3
Oct 13 02:54:01.460 INFO kablam!    |
Oct 13 02:54:01.460 INFO kablam! 38 |   pub fn peek(&self) -> Option<&T> {
Oct 13 02:54:01.460 INFO kablam!    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 02:54:01.460 INFO kablam! 
Oct 13 02:54:01.460 INFO kablam! warning: method is never used: `peek_mut`
Oct 13 02:54:01.461 INFO kablam!   --> src/linked_list.rs:44:3
Oct 13 02:54:01.461 INFO kablam!    |
Oct 13 02:54:01.461 INFO kablam! 44 |   pub fn peek_mut(&mut self) -> Option<&mut T> {
Oct 13 02:54:01.461 INFO kablam!    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 02:54:01.461 INFO kablam! 
Oct 13 02:54:01.461 INFO kablam! warning: method is never used: `into_iter`
Oct 13 02:54:01.461 INFO kablam!   --> src/linked_list.rs:50:3
Oct 13 02:54:01.461 INFO kablam!    |
Oct 13 02:54:01.461 INFO kablam! 50 |   pub fn into_iter(self) -> IntoIter<T> {
Oct 13 02:54:01.461 INFO kablam!    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 02:54:01.461 INFO kablam! 
Oct 13 02:54:01.745 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
Oct 13 02:54:01.748 INFO kablam! su: No module specific data is present
Oct 13 02:54:02.094 INFO running `"docker" "rm" "-f" "b45334d67d062c233454980c73f8e13a7d0f377f04201fbe889ed389c9b1dc6b"`
Oct 13 02:54:02.174 INFO blam! b45334d67d062c233454980c73f8e13a7d0f377f04201fbe889ed389c9b1dc6b