Dec 11 19:43:34.712 INFO checking dewaka/chainmap against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 19:43:34.712 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 19:43:35.063 INFO [stdout] aa6ae8f0b8194f3d4536e6dd8afb99b74419aacc1271291395ebad182a3bb4fc
Dec 11 19:43:35.065 INFO running `"docker" "start" "-a" "aa6ae8f0b8194f3d4536e6dd8afb99b74419aacc1271291395ebad182a3bb4fc"`
Dec 11 19:43:35.900 INFO [stderr] usermod: no changes
Dec 11 19:43:35.945 INFO [stderr]     Checking chainmap v0.1.0 (/source)
Dec 11 19:43:37.296 INFO [stderr] warning: variable does not need to be mutable
Dec 11 19:43:37.296 INFO [stderr]   --> src/example.rs:16:9
Dec 11 19:43:37.296 INFO [stderr]    |
Dec 11 19:43:37.296 INFO [stderr] 16 |     let mut clothing = HashMap::new();
Dec 11 19:43:37.296 INFO [stderr]    |         ----^^^^^^^^
Dec 11 19:43:37.296 INFO [stderr]    |         |
Dec 11 19:43:37.296 INFO [stderr]    |         help: remove this `mut`
Dec 11 19:43:37.296 INFO [stderr]    |
Dec 11 19:43:37.296 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 19:43:37.296 INFO [stderr] 
Dec 11 19:43:37.308 INFO [stderr] warning: method is never used: `insert`
Dec 11 19:43:37.308 INFO [stderr]   --> src/lib.rs:27:5
Dec 11 19:43:37.308 INFO [stderr]    |
Dec 11 19:43:37.308 INFO [stderr] 27 |     pub fn insert(&mut self, k: K, v: V) -> Option<V> {
Dec 11 19:43:37.308 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:43:37.308 INFO [stderr]    |
Dec 11 19:43:37.308 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 19:43:37.308 INFO [stderr] 
Dec 11 19:43:37.308 INFO [stderr] warning: method is never used: `is_empty`
Dec 11 19:43:37.308 INFO [stderr]   --> src/lib.rs:36:5
Dec 11 19:43:37.308 INFO [stderr]    |
Dec 11 19:43:37.308 INFO [stderr] 36 |     pub fn is_empty(&self) -> bool {
Dec 11 19:43:37.308 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:43:37.308 INFO [stderr] 
Dec 11 19:43:37.308 INFO [stderr] warning: method is never used: `empty`
Dec 11 19:43:37.308 INFO [stderr]   --> src/lib.rs:51:5
Dec 11 19:43:37.308 INFO [stderr]    |
Dec 11 19:43:37.308 INFO [stderr] 51 |     pub fn empty() -> Self {
Dec 11 19:43:37.309 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:43:37.309 INFO [stderr] 
Dec 11 19:43:37.309 INFO [stderr] warning: method is never used: `add_map`
Dec 11 19:43:37.309 INFO [stderr]   --> src/lib.rs:56:5
Dec 11 19:43:37.309 INFO [stderr]    |
Dec 11 19:43:37.309 INFO [stderr] 56 |     pub fn add_map(&mut self, m: ChainMapType<K, V>) -> &mut Self {
Dec 11 19:43:37.309 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:43:37.309 INFO [stderr] 
Dec 11 19:43:37.309 INFO [stderr] warning: method is never used: `to_map`
Dec 11 19:43:37.309 INFO [stderr]   --> src/lib.rs:64:5
Dec 11 19:43:37.309 INFO [stderr]    |
Dec 11 19:43:37.309 INFO [stderr] 64 |     pub fn to_map(&self) -> ChainMapType<K, V> {
Dec 11 19:43:37.309 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:43:37.309 INFO [stderr] 
Dec 11 19:43:37.309 INFO [stderr] warning: method is never used: `parents`
Dec 11 19:43:37.309 INFO [stderr]   --> src/lib.rs:78:5
Dec 11 19:43:37.309 INFO [stderr]    |
Dec 11 19:43:37.309 INFO [stderr] 78 |     pub fn parents(&self) -> Option<Self> {
Dec 11 19:43:37.309 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:43:37.309 INFO [stderr] 
Dec 11 19:43:37.309 INFO [stderr] warning: method is never used: `children`
Dec 11 19:43:37.309 INFO [stderr]   --> src/lib.rs:89:5
Dec 11 19:43:37.309 INFO [stderr]    |
Dec 11 19:43:37.309 INFO [stderr] 89 |     pub fn children(&self) -> Option<Self> {
Dec 11 19:43:37.309 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:43:37.309 INFO [stderr] 
Dec 11 19:43:37.376 INFO [stderr] warning: variable does not need to be mutable
Dec 11 19:43:37.376 INFO [stderr]   --> src/example.rs:16:9
Dec 11 19:43:37.376 INFO [stderr]    |
Dec 11 19:43:37.376 INFO [stderr] 16 |     let mut clothing = HashMap::new();
Dec 11 19:43:37.376 INFO [stderr]    |         ----^^^^^^^^
Dec 11 19:43:37.376 INFO [stderr]    |         |
Dec 11 19:43:37.376 INFO [stderr]    |         help: remove this `mut`
Dec 11 19:43:37.376 INFO [stderr]    |
Dec 11 19:43:37.376 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 19:43:37.376 INFO [stderr] 
Dec 11 19:43:37.463 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
Dec 11 19:43:37.465 INFO [stderr] su: No module specific data is present
Dec 11 19:43:37.916 INFO running `"docker" "inspect" "aa6ae8f0b8194f3d4536e6dd8afb99b74419aacc1271291395ebad182a3bb4fc"`
Dec 11 19:43:38.054 INFO running `"docker" "rm" "-f" "aa6ae8f0b8194f3d4536e6dd8afb99b74419aacc1271291395ebad182a3bb4fc"`
Dec 11 19:43:38.212 INFO [stdout] aa6ae8f0b8194f3d4536e6dd8afb99b74419aacc1271291395ebad182a3bb4fc