[INFO] cloning repository https://github.com/PoulavBhowmick03/lru_cache
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PoulavBhowmick03/lru_cache" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPoulavBhowmick03%2Flru_cache", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPoulavBhowmick03%2Flru_cache'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da8eee39a98560f95556bb6d30486b09a9d2985d
[INFO] testing PoulavBhowmick03/lru_cache against master#0d162b25edd5bf0dba9a22e83b614f1113e90474 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPoulavBhowmick03%2Flru_cache" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/PoulavBhowmick03/lru_cache
[INFO] finished tweaking git repo https://github.com/PoulavBhowmick03/lru_cache
[INFO] tweaked toml for git repo https://github.com/PoulavBhowmick03/lru_cache written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/PoulavBhowmick03/lru_cache on toolchain 0d162b25edd5bf0dba9a22e83b614f1113e90474
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/PoulavBhowmick03/lru_cache already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a34d50f6c3873dea3a2fd9f534d2245f3ad5b861b6517137ceb81865c2c1bbfa
[INFO] running `Command { std: "docker" "start" "-a" "a34d50f6c3873dea3a2fd9f534d2245f3ad5b861b6517137ceb81865c2c1bbfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a34d50f6c3873dea3a2fd9f534d2245f3ad5b861b6517137ceb81865c2c1bbfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a34d50f6c3873dea3a2fd9f534d2245f3ad5b861b6517137ceb81865c2c1bbfa", kill_on_drop: false }`
[INFO] [stdout] a34d50f6c3873dea3a2fd9f534d2245f3ad5b861b6517137ceb81865c2c1bbfa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5988d4e9286de429e47b6cce18bc82ae102d80e1140fad6e031702721cdc1175
[INFO] running `Command { std: "docker" "start" "-a" "5988d4e9286de429e47b6cce18bc82ae102d80e1140fad6e031702721cdc1175", kill_on_drop: false }`
[INFO] [stderr]    Compiling lru_cache v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `key`, `value`, `prev`, and `next` are never read
[INFO] [stdout]  --> src/list.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Node<K, V> {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 5 |     key: K,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 6 |     value: V,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     prev: Option<usize>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     next: Option<usize>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `nodes`, `head`, and `tail` are never read
[INFO] [stdout]   --> src/list.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct List<K, V> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 13 |     nodes: Vec<Node<K, V>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 14 |     head: Option<usize>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     tail: Option<usize>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push_front`, `pop_back`, `remove`, and `move_to_front` are never used
[INFO] [stdout]   --> src/list.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<K,V> List<K, V> {
[INFO] [stdout]    | -------------------- associated items in this implementation
[INFO] [stdout] 19 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn push_front(&mut self, key: K, value: V) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn pop_back(&mut self) -> Option<(K, V)> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn remove(&mut self, idx:usize) -> Option<(K, V)> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn move_to_front(&mut self, idx: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `capacity`, `map`, and `list` are never read
[INFO] [stdout]  --> src/cache.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct LruCache<K,V> {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 2 |     capacity: usize,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 3 |     map: std::collections::HashMap<K, usize>,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     list: crate::list::List<K, V>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "5988d4e9286de429e47b6cce18bc82ae102d80e1140fad6e031702721cdc1175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5988d4e9286de429e47b6cce18bc82ae102d80e1140fad6e031702721cdc1175", kill_on_drop: false }`
[INFO] [stdout] 5988d4e9286de429e47b6cce18bc82ae102d80e1140fad6e031702721cdc1175
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec93d1c8e32f44e44b28a8779da0a2835b37f6ac12164402b154b600ce5e05c2
[INFO] running `Command { std: "docker" "start" "-a" "ec93d1c8e32f44e44b28a8779da0a2835b37f6ac12164402b154b600ce5e05c2", kill_on_drop: false }`
[INFO] [stdout] warning: fields `key`, `value`, `prev`, and `next` are never read
[INFO] [stdout]  --> src/list.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Node<K, V> {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 5 |     key: K,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 6 |     value: V,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     prev: Option<usize>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     next: Option<usize>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `nodes`, `head`, and `tail` are never read
[INFO] [stdout]   --> src/list.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct List<K, V> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 13 |     nodes: Vec<Node<K, V>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 14 |     head: Option<usize>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     tail: Option<usize>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push_front`, `pop_back`, `remove`, and `move_to_front` are never used
[INFO] [stdout]   --> src/list.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<K,V> List<K, V> {
[INFO] [stdout]    | -------------------- associated items in this implementation
[INFO] [stdout] 19 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn push_front(&mut self, key: K, value: V) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn pop_back(&mut self) -> Option<(K, V)> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn remove(&mut self, idx:usize) -> Option<(K, V)> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn move_to_front(&mut self, idx: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lru_cache v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `capacity`, `map`, and `list` are never read
[INFO] [stdout]  --> src/cache.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct LruCache<K,V> {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 2 |     capacity: usize,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 3 |     map: std::collections::HashMap<K, usize>,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     list: crate::list::List<K, V>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remove` is never used
[INFO] [stdout]   --> src/list.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<K,V> List<K, V> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn remove(&mut self, idx:usize) -> Option<(K, V)> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `capacity`, `map`, and `list` are never read
[INFO] [stdout]  --> src/cache.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct LruCache<K,V> {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 2 |     capacity: usize,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 3 |     map: std::collections::HashMap<K, usize>,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     list: crate::list::List<K, V>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "ec93d1c8e32f44e44b28a8779da0a2835b37f6ac12164402b154b600ce5e05c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec93d1c8e32f44e44b28a8779da0a2835b37f6ac12164402b154b600ce5e05c2", kill_on_drop: false }`
[INFO] [stdout] ec93d1c8e32f44e44b28a8779da0a2835b37f6ac12164402b154b600ce5e05c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 36d11162fdb60a19741076264b8e888e476ab87dfe1405c6f443abe97a6dc5c7
[INFO] running `Command { std: "docker" "start" "-a" "36d11162fdb60a19741076264b8e888e476ab87dfe1405c6f443abe97a6dc5c7", kill_on_drop: false }`
[INFO] [stderr] warning: fields `key`, `value`, `prev`, and `next` are never read
[INFO] [stderr]  --> src/list.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct Node<K, V> {
[INFO] [stderr]   |            ---- fields in this struct
[INFO] [stderr] 5 |     key: K,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 6 |     value: V,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 7 |     prev: Option<usize>,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 8 |     next: Option<usize>,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Node` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `nodes`, `head`, and `tail` are never read
[INFO] [stderr]   --> src/list.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct List<K, V> {
[INFO] [stderr]    |            ---- fields in this struct
[INFO] [stderr] 13 |     nodes: Vec<Node<K, V>>,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 14 |     head: Option<usize>,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 15 |     tail: Option<usize>,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `List` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `push_front`, `pop_back`, `remove`, and `move_to_front` are never used
[INFO] [stderr]   --> src/list.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl<K,V> List<K, V> {
[INFO] [stderr]    | -------------------- associated items in this implementation
[INFO] [stderr] 19 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 27 |     fn push_front(&mut self, key: K, value: V) -> usize {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 45 |     fn pop_back(&mut self) -> Option<(K, V)> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |     fn remove(&mut self, idx:usize) -> Option<(K, V)> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |     fn move_to_front(&mut self, idx: usize) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `capacity`, `map`, and `list` are never read
[INFO] [stderr]  --> src/cache.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct LruCache<K,V> {
[INFO] [stderr]   |            -------- fields in this struct
[INFO] [stderr] 2 |     capacity: usize,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 3 |     map: std::collections::HashMap<K, usize>,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 4 |     list: crate::list::List<K, V>,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `lru_cache` (lib) generated 4 warnings
[INFO] [stderr] warning: method `remove` is never used
[INFO] [stderr]   --> src/list.rs:54:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl<K,V> List<K, V> {
[INFO] [stderr]    | -------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 54 |     fn remove(&mut self, idx:usize) -> Option<(K, V)> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `lru_cache` (lib test) generated 2 warnings (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lru_cache-c83aadcb9d77c6d0)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test list::tests::test_single ... ok
[INFO] [stdout] test list::tests::test_list ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test list::tests::test_move_to_front ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- list::tests::test_move_to_front stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'list::tests::test_move_to_front' (18) panicked at src/list.rs:126:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: 0
[INFO] [stdout]  right: 150
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x6168dbe91e52 - std[3b51380354919863]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x6168dbe91e52 - std[3b51380354919863]::backtrace_rs::backtrace::trace_unsynchronized::<std[3b51380354919863]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x6168dbe91e52 - std[3b51380354919863]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x6168dbe91e52 - <<std[3b51380354919863]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[27de1724e4349be2]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x6168dbea670a - <core[27de1724e4349be2]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x6168dbea670a - core[27de1724e4349be2]::fmt::write
[INFO] [stdout]    6:     0x6168dbe96c56 - std[3b51380354919863]::io::default_write_fmt::<alloc[a57f19327c0ad893]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x6168dbe96c56 - <alloc[a57f19327c0ad893]::vec::Vec<u8> as std[3b51380354919863]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x6168dbe705ef - <std[3b51380354919863]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x6168dbe705ef - std[3b51380354919863]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x6168dbe8a139 - std[3b51380354919863]::panicking::default_hook
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x6168dbe25bbe - <alloc[a57f19327c0ad893]::boxed::Box<dyn for<'a, 'b> core[27de1724e4349be2]::ops::function::Fn<(&'a std[3b51380354919863]::panic::PanicHookInfo<'b>,), Output = ()> + core[27de1724e4349be2]::marker::Sync + core[27de1724e4349be2]::marker::Send> as core[27de1724e4349be2]::ops::function::Fn<(&std[3b51380354919863]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x6168dbe25bbe - test[182b2e79ecd7bbd9]::test_main_with_exit_callback::<test[182b2e79ecd7bbd9]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x6168dbe8a2f2 - <alloc[a57f19327c0ad893]::boxed::Box<dyn for<'a, 'b> core[27de1724e4349be2]::ops::function::Fn<(&'a std[3b51380354919863]::panic::PanicHookInfo<'b>,), Output = ()> + core[27de1724e4349be2]::marker::Sync + core[27de1724e4349be2]::marker::Send> as core[27de1724e4349be2]::ops::function::Fn<(&std[3b51380354919863]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x6168dbe8a2f2 - std[3b51380354919863]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x6168dbe706a8 - std[3b51380354919863]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x6168dbe65929 - std[3b51380354919863]::sys::backtrace::__rust_end_short_backtrace::<std[3b51380354919863]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x6168dbe714fd - __rustc[d79c0ace40940972]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x6168dbea6d7c - core[27de1724e4349be2]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x6168dbea6c93 - core[27de1724e4349be2]::panicking::assert_failed_inner
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/panicking.rs:439:17
[INFO] [stdout]   20:     0x6168dbea313d - core[27de1724e4349be2]::panicking::assert_failed::<usize, usize>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/panicking.rs:394:5
[INFO] [stdout]   21:     0x6168dbe18dc0 - lru_cache[9a8d3b2d3198faaf]::list::tests::test_move_to_front
[INFO] [stdout]                                at /opt/rustwide/workdir/src/list.rs:126:9
[INFO] [stdout]   22:     0x6168dbe176a7 - lru_cache[9a8d3b2d3198faaf]::list::tests::test_move_to_front::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/list.rs:116:28
[INFO] [stdout]   23:     0x6168dbe19e56 - <lru_cache[9a8d3b2d3198faaf]::list::tests::test_move_to_front::{closure#0} as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x6168dbe19f6b - <fn() -> core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String> as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x6168dbe19f6b - test[182b2e79ecd7bbd9]::__rust_begin_short_backtrace::<core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String>, fn() -> core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String>>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x6168dbe267ca - test[182b2e79ecd7bbd9]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x6168dbe267ca - <core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<test[182b2e79ecd7bbd9]::run_test_in_process::{closure#0}> as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x6168dbe267ca - std[3b51380354919863]::panicking::catch_unwind::do_call::<core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<test[182b2e79ecd7bbd9]::run_test_in_process::{closure#0}>, core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String>>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x6168dbe267ca - std[3b51380354919863]::panicking::catch_unwind::<core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String>, core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<test[182b2e79ecd7bbd9]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x6168dbe267ca - std[3b51380354919863]::panic::catch_unwind::<core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<test[182b2e79ecd7bbd9]::run_test_in_process::{closure#0}>, core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String>>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x6168dbe267ca - test[182b2e79ecd7bbd9]::run_test_in_process
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x6168dbe267ca - test[182b2e79ecd7bbd9]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x6168dbe21d74 - test[182b2e79ecd7bbd9]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x6168dbe21d74 - std[3b51380354919863]::sys::backtrace::__rust_begin_short_backtrace::<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x6168dbe292c2 - std[3b51380354919863]::thread::lifecycle::spawn_unchecked::<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x6168dbe292c2 - <core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<std[3b51380354919863]::thread::lifecycle::spawn_unchecked<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x6168dbe292c2 - std[3b51380354919863]::panicking::catch_unwind::do_call::<core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<std[3b51380354919863]::thread::lifecycle::spawn_unchecked<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x6168dbe292c2 - std[3b51380354919863]::panicking::catch_unwind::<(), core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<std[3b51380354919863]::thread::lifecycle::spawn_unchecked<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x6168dbe292c2 - std[3b51380354919863]::panic::catch_unwind::<core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<std[3b51380354919863]::thread::lifecycle::spawn_unchecked<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x6168dbe292c2 - std[3b51380354919863]::thread::lifecycle::spawn_unchecked::<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x6168dbe292c2 - <std[3b51380354919863]::thread::lifecycle::spawn_unchecked<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1} as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x6168dbe916ff - <alloc[a57f19327c0ad893]::boxed::Box<dyn core[27de1724e4349be2]::ops::function::FnOnce<(), Output = ()> + core[27de1724e4349be2]::marker::Send> as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x6168dbe916ff - <std[3b51380354919863]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/thread/unix.rs:119:17
[INFO] [stdout]   44:     0x7c986c85faa4 - <unknown>
[INFO] [stdout]   45:     0x7c986c8eca64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     list::tests::test_move_to_front
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "36d11162fdb60a19741076264b8e888e476ab87dfe1405c6f443abe97a6dc5c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36d11162fdb60a19741076264b8e888e476ab87dfe1405c6f443abe97a6dc5c7", kill_on_drop: false }`
[INFO] [stdout] 36d11162fdb60a19741076264b8e888e476ab87dfe1405c6f443abe97a6dc5c7
