Dec 11 06:52:35.638 INFO checking varzac/rust_collections against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 06:52:35.639 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 11 06:52:35.865 INFO [stdout] 1dc636ab0e19d51bc062dbbab17c2e196e1fdfc64bb746cee17a7eeff9363002
Dec 11 06:52:35.870 INFO running `"docker" "start" "-a" "1dc636ab0e19d51bc062dbbab17c2e196e1fdfc64bb746cee17a7eeff9363002"`
Dec 11 06:52:36.572 INFO [stderr] usermod: no changes
Dec 11 06:52:36.608 INFO [stderr] warning: path `/source/src/linked_list.rs` was erroneously implicitly accepted for binary `linked_list`,
Dec 11 06:52:36.608 INFO [stderr] please set bin.path in Cargo.toml
Dec 11 06:52:36.609 INFO [stderr]     Checking linked_list v0.0.1 (/source)
Dec 11 06:52:36.864 INFO [stderr] warning: method is never used: `delete_val`
Dec 11 06:52:36.864 INFO [stderr]   --> src/linked_list.rs:14:5
Dec 11 06:52:36.864 INFO [stderr]    |
Dec 11 06:52:36.864 INFO [stderr] 14 |     fn delete_val(&self, val: &T) -> Option<Rc<LinkedList<T>>> {
Dec 11 06:52:36.864 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:52:36.864 INFO [stderr]    |
Dec 11 06:52:36.864 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 06:52:36.864 INFO [stderr] 
Dec 11 06:52:36.864 INFO [stderr] warning: method is never used: `insert_val`
Dec 11 06:52:36.864 INFO [stderr]   --> src/linked_list.rs:38:5
Dec 11 06:52:36.864 INFO [stderr]    |
Dec 11 06:52:36.864 INFO [stderr] 38 |     fn insert_val(&self, val: T) -> LinkedList<T> {
Dec 11 06:52:36.864 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:52:36.864 INFO [stderr] 
Dec 11 06:52:36.864 INFO [stderr] warning: method is never used: `length`
Dec 11 06:52:36.864 INFO [stderr]   --> src/linked_list.rs:42:5
Dec 11 06:52:36.864 INFO [stderr]    |
Dec 11 06:52:36.864 INFO [stderr] 42 |     fn length(&self) -> i32 {
Dec 11 06:52:36.864 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:52:36.864 INFO [stderr] 
Dec 11 06:52:36.864 INFO [stderr] warning: method is never used: `find`
Dec 11 06:52:36.864 INFO [stderr]   --> src/linked_list.rs:66:5
Dec 11 06:52:36.864 INFO [stderr]    |
Dec 11 06:52:36.864 INFO [stderr] 66 |     fn find(&self, val: T) -> Option<i32> {
Dec 11 06:52:36.864 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:52:36.864 INFO [stderr] 
Dec 11 06:52:37.000 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
Dec 11 06:52:37.003 INFO [stderr] su: No module specific data is present
Dec 11 06:52:37.361 INFO running `"docker" "inspect" "1dc636ab0e19d51bc062dbbab17c2e196e1fdfc64bb746cee17a7eeff9363002"`
Dec 11 06:52:37.465 INFO running `"docker" "rm" "-f" "1dc636ab0e19d51bc062dbbab17c2e196e1fdfc64bb746cee17a7eeff9363002"`
Dec 11 06:52:37.545 INFO [stdout] 1dc636ab0e19d51bc062dbbab17c2e196e1fdfc64bb746cee17a7eeff9363002