Dec 12 17:59:00.165 INFO checking assoc_list-0.1.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 17:59:00.165 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 17:59:00.663 INFO [stdout] 79c28a85d06f2fe64af396e9430d9c357a50fafa801c4e238ffe8b7f5105c4e6
Dec 12 17:59:00.665 INFO running `"docker" "start" "-a" "79c28a85d06f2fe64af396e9430d9c357a50fafa801c4e238ffe8b7f5105c4e6"`
Dec 12 17:59:02.648 INFO [stderr] usermod: no changes
Dec 12 17:59:02.708 INFO [stderr]     Checking assoc_list v0.1.0 (/source)
Dec 12 17:59:03.916 INFO [stderr] warning: method is never used: `new`
Dec 12 17:59:03.916 INFO [stderr]   --> src/lib.rs:11:5
Dec 12 17:59:03.916 INFO [stderr]    |
Dec 12 17:59:03.916 INFO [stderr] 11 |     fn new() -> AssocList<K, V> {
Dec 12 17:59:03.916 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 17:59:03.916 INFO [stderr]    |
Dec 12 17:59:03.916 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 17:59:03.916 INFO [stderr] 
Dec 12 17:59:03.916 INFO [stderr] warning: method is never used: `insert`
Dec 12 17:59:03.916 INFO [stderr]   --> src/lib.rs:15:5
Dec 12 17:59:03.916 INFO [stderr]    |
Dec 12 17:59:03.916 INFO [stderr] 15 |     fn insert(&mut self, k: K, v: V) {
Dec 12 17:59:03.916 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 17:59:03.916 INFO [stderr] 
Dec 12 17:59:03.916 INFO [stderr] warning: method is never used: `len`
Dec 12 17:59:03.916 INFO [stderr]   --> src/lib.rs:19:5
Dec 12 17:59:03.916 INFO [stderr]    |
Dec 12 17:59:03.916 INFO [stderr] 19 |     fn len(&self) -> usize {
Dec 12 17:59:03.916 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 12 17:59:03.916 INFO [stderr] 
Dec 12 17:59:03.916 INFO [stderr] warning: method is never used: `contains_key`
Dec 12 17:59:03.916 INFO [stderr]   --> src/lib.rs:36:5
Dec 12 17:59:03.916 INFO [stderr]    |
Dec 12 17:59:03.916 INFO [stderr] 36 |     fn contains_key(&self, k: &K) -> bool {
Dec 12 17:59:03.916 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 17:59:03.916 INFO [stderr] 
Dec 12 17:59:03.916 INFO [stderr] warning: method is never used: `remove`
Dec 12 17:59:03.916 INFO [stderr]   --> src/lib.rs:43:5
Dec 12 17:59:03.916 INFO [stderr]    |
Dec 12 17:59:03.916 INFO [stderr] 43 |     fn remove(&mut self, k: &K) {
Dec 12 17:59:03.916 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 17:59:03.916 INFO [stderr] 
Dec 12 17:59:03.917 INFO [stderr] warning: unused variable: `map`
Dec 12 17:59:03.917 INFO [stderr]   --> src/lib.rs:60:9
Dec 12 17:59:03.917 INFO [stderr]    |
Dec 12 17:59:03.917 INFO [stderr] 60 |     let map: AssocList<String, String> = AssocList::new();
Dec 12 17:59:03.917 INFO [stderr]    |         ^^^ help: consider using `_map` instead
Dec 12 17:59:03.917 INFO [stderr]    |
Dec 12 17:59:03.917 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 17:59:03.917 INFO [stderr] 
Dec 12 17:59:03.980 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
Dec 12 17:59:03.984 INFO [stderr] su: No module specific data is present
Dec 12 17:59:04.848 INFO running `"docker" "inspect" "79c28a85d06f2fe64af396e9430d9c357a50fafa801c4e238ffe8b7f5105c4e6"`
Dec 12 17:59:05.166 INFO running `"docker" "rm" "-f" "79c28a85d06f2fe64af396e9430d9c357a50fafa801c4e238ffe8b7f5105c4e6"`
Dec 12 17:59:05.432 INFO [stdout] 79c28a85d06f2fe64af396e9430d9c357a50fafa801c4e238ffe8b7f5105c4e6