Dec 05 00:25:20.991 INFO checking Razakhel/rs-ds against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 00:25:20.992 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 05 00:25:21.405 INFO [stdout] 528c93690546db26bed8314b3777a2759983ce72310e27a2454046a0b9e9f44b
Dec 05 00:25:21.407 INFO running `"docker" "start" "-a" "528c93690546db26bed8314b3777a2759983ce72310e27a2454046a0b9e9f44b"`
Dec 05 00:25:23.524 INFO [stderr] usermod: no changes
Dec 05 00:25:23.611 INFO [stderr]     Checking rs-ds v0.1.0 (/source)
Dec 05 00:25:24.275 INFO [stderr] warning: struct is never constructed: `IntoIter`
Dec 05 00:25:24.275 INFO [stderr]   --> src/linked_list.rs:16:1
Dec 05 00:25:24.275 INFO [stderr]    |
Dec 05 00:25:24.275 INFO [stderr] 16 | pub struct IntoIter<T>(List<T>);
Dec 05 00:25:24.275 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:25:24.275 INFO [stderr]    |
Dec 05 00:25:24.275 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 00:25:24.275 INFO [stderr] 
Dec 05 00:25:24.275 INFO [stderr] warning: method is never used: `peek`
Dec 05 00:25:24.275 INFO [stderr]   --> src/linked_list.rs:38:3
Dec 05 00:25:24.275 INFO [stderr]    |
Dec 05 00:25:24.275 INFO [stderr] 38 |   pub fn peek(&self) -> Option<&T> {
Dec 05 00:25:24.275 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:25:24.275 INFO [stderr] 
Dec 05 00:25:24.275 INFO [stderr] warning: method is never used: `peek_mut`
Dec 05 00:25:24.275 INFO [stderr]   --> src/linked_list.rs:44:3
Dec 05 00:25:24.275 INFO [stderr]    |
Dec 05 00:25:24.275 INFO [stderr] 44 |   pub fn peek_mut(&mut self) -> Option<&mut T> {
Dec 05 00:25:24.275 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:25:24.275 INFO [stderr] 
Dec 05 00:25:24.275 INFO [stderr] warning: method is never used: `into_iter`
Dec 05 00:25:24.275 INFO [stderr]   --> src/linked_list.rs:50:3
Dec 05 00:25:24.275 INFO [stderr]    |
Dec 05 00:25:24.275 INFO [stderr] 50 |   pub fn into_iter(self) -> IntoIter<T> {
Dec 05 00:25:24.275 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:25:24.275 INFO [stderr] 
Dec 05 00:25:24.455 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
Dec 05 00:25:24.457 INFO [stderr] su: No module specific data is present
Dec 05 00:25:25.115 INFO running `"docker" "inspect" "528c93690546db26bed8314b3777a2759983ce72310e27a2454046a0b9e9f44b"`
Dec 05 00:25:25.337 INFO running `"docker" "rm" "-f" "528c93690546db26bed8314b3777a2759983ce72310e27a2454046a0b9e9f44b"`
Dec 05 00:25:25.620 INFO [stdout] 528c93690546db26bed8314b3777a2759983ce72310e27a2454046a0b9e9f44b