Dec 12 00:39:17.743 INFO checking Razakhel/rs-ds against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 00:39:17.743 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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"`
Dec 12 00:39:18.156 INFO [stdout] ca83cb97b9578091115c75c5c86d31e0d220300bba108b0355c5f4fbcb67c775
Dec 12 00:39:18.162 INFO running `"docker" "start" "-a" "ca83cb97b9578091115c75c5c86d31e0d220300bba108b0355c5f4fbcb67c775"`
Dec 12 00:39:19.647 INFO [stderr] usermod: no changes
Dec 12 00:39:19.730 INFO [stderr]     Checking rs-ds v0.1.0 (/source)
Dec 12 00:39:20.716 INFO [stderr] warning: struct is never constructed: `IntoIter`
Dec 12 00:39:20.716 INFO [stderr]   --> src/linked_list.rs:16:1
Dec 12 00:39:20.716 INFO [stderr]    |
Dec 12 00:39:20.716 INFO [stderr] 16 | pub struct IntoIter<T>(List<T>);
Dec 12 00:39:20.716 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:39:20.716 INFO [stderr]    |
Dec 12 00:39:20.716 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 00:39:20.716 INFO [stderr] 
Dec 12 00:39:20.716 INFO [stderr] warning: method is never used: `peek`
Dec 12 00:39:20.716 INFO [stderr]   --> src/linked_list.rs:38:3
Dec 12 00:39:20.716 INFO [stderr]    |
Dec 12 00:39:20.716 INFO [stderr] 38 |   pub fn peek(&self) -> Option<&T> {
Dec 12 00:39:20.716 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:39:20.716 INFO [stderr] 
Dec 12 00:39:20.716 INFO [stderr] warning: method is never used: `peek_mut`
Dec 12 00:39:20.716 INFO [stderr]   --> src/linked_list.rs:44:3
Dec 12 00:39:20.716 INFO [stderr]    |
Dec 12 00:39:20.716 INFO [stderr] 44 |   pub fn peek_mut(&mut self) -> Option<&mut T> {
Dec 12 00:39:20.716 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:39:20.716 INFO [stderr] 
Dec 12 00:39:20.716 INFO [stderr] warning: method is never used: `into_iter`
Dec 12 00:39:20.716 INFO [stderr]   --> src/linked_list.rs:50:3
Dec 12 00:39:20.716 INFO [stderr]    |
Dec 12 00:39:20.716 INFO [stderr] 50 |   pub fn into_iter(self) -> IntoIter<T> {
Dec 12 00:39:20.716 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:39:20.716 INFO [stderr] 
Dec 12 00:39:20.791 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
Dec 12 00:39:20.795 INFO [stderr] su: No module specific data is present
Dec 12 00:39:21.573 INFO running `"docker" "inspect" "ca83cb97b9578091115c75c5c86d31e0d220300bba108b0355c5f4fbcb67c775"`
Dec 12 00:39:21.934 INFO running `"docker" "rm" "-f" "ca83cb97b9578091115c75c5c86d31e0d220300bba108b0355c5f4fbcb67c775"`
Dec 12 00:39:22.220 INFO [stdout] ca83cb97b9578091115c75c5c86d31e0d220300bba108b0355c5f4fbcb67c775