[INFO] fetching crate bitcoinleveldb-cache 0.1.16-alpha.0...
[INFO] checking bitcoinleveldb-cache-0.1.16-alpha.0 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate bitcoinleveldb-cache 0.1.16-alpha.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate bitcoinleveldb-cache 0.1.16-alpha.0 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitcoinleveldb-cache 0.1.16-alpha.0
[INFO] finished tweaking crates.io crate bitcoinleveldb-cache 0.1.16-alpha.0
[INFO] tweaked toml for crates.io crate bitcoinleveldb-cache 0.1.16-alpha.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 736616f8ced3afd1c242b7a07d006d60592df2c4601d5ca3b5a7f67ad14910c5
[INFO] running `Command { std: "docker" "start" "-a" "736616f8ced3afd1c242b7a07d006d60592df2c4601d5ca3b5a7f67ad14910c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "736616f8ced3afd1c242b7a07d006d60592df2c4601d5ca3b5a7f67ad14910c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "736616f8ced3afd1c242b7a07d006d60592df2c4601d5ca3b5a7f67ad14910c5", kill_on_drop: false }`
[INFO] [stdout] 736616f8ced3afd1c242b7a07d006d60592df2c4601d5ca3b5a7f67ad14910c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd919aa443e945f340bbbf85f6dfb9581a0edcc2ba7ca82468877221d8adc0f2
[INFO] running `Command { std: "docker" "start" "-a" "fd919aa443e945f340bbbf85f6dfb9581a0edcc2ba7ca82468877221d8adc0f2", kill_on_drop: false }`
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[INFO] [stderr]     Checking libevent v0.1.0
[INFO] [stderr]     Checking bitcoin-imports v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoin-cfg v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoin-derive v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoinleveldb-slice v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoinleveldb-cache v0.1.16-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `bitcoin_derive::*`
[INFO] [stdout]  --> src/imports.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) use bitcoin_derive::*;
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `capacity`
[INFO] [stdout]    --> src/cache.rs:160:22
[INFO] [stdout]     |
[INFO] [stdout] 160 | pub fn new_lru_cache(capacity: usize) -> *mut Cache {
[INFO] [stdout]     |                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_capacity`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cache.rs:201:34
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub fn lru_remove(&mut self, e: *mut CacheHandle)  {
[INFO] [stdout]     |                                  ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cache.rs:209:34
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn lru_append(&mut self, e: *mut CacheHandle)  {
[INFO] [stdout]     |                                  ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cache.rs:217:29
[INFO] [stdout]     |
[INFO] [stdout] 217 |     pub fn unref(&mut self, e: *mut CacheHandle)  {
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/cache_test.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn encode_key(k: i32) -> String {
[INFO] [stdout]    |               ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/cache_test.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn decode_key(k: &Slice) -> i32 {
[INFO] [stdout]    |               ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/cache_test.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn encode_value(v: libc::uintptr_t)  {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/cache_test.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn decode_value(v: *mut c_void) -> i32 {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_`
[INFO] [stdout]   --> src/cache_test.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         key_: &Slice,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_key_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/cache_test.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |         v:   *mut c_void)  {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_`
[INFO] [stdout]    --> src/cache_test.rs:101:26
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn lookup(&mut self, key_: i32) -> i32 {
[INFO] [stdout]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_key_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `charge`
[INFO] [stdout]    --> src/cache_test.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |         let charge: i32 = charge.unwrap_or(1);
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_charge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_`
[INFO] [stdout]    --> src/cache_test.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |         key_:    i32,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_key_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/cache_test.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |         value:  i32,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `charge`
[INFO] [stdout]    --> src/cache_test.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |         let charge: i32 = charge.unwrap_or(1);
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_charge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_`
[INFO] [stdout]    --> src/cache_test.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         key_:   i32,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_key_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/cache_test.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         value:  i32,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_`
[INFO] [stdout]    --> src/cache_test.rs:140:25
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn erase(&mut self, key_: i32)  {
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_key_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `argc`
[INFO] [stdout]    --> src/cache_test.rs:352:9
[INFO] [stdout]     |
[INFO] [stdout] 352 |         argc: i32,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_argc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `argv`
[INFO] [stdout]    --> src/cache_test.rs:353:9
[INFO] [stdout]     |
[INFO] [stdout] 353 |         argv: *mut *mut u8) -> i32 {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_argv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rep` is never read
[INFO] [stdout]    --> src/cache.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 179 | pub struct Cache {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 180 |     rep: Rc<RefCell<CacheRep>>,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_key` is never used
[INFO] [stdout]   --> src/cache_test.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn encode_key(k: i32) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_key` is never used
[INFO] [stdout]   --> src/cache_test.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn decode_key(k: &Slice) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_value` is never used
[INFO] [stdout]   --> src/cache_test.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn encode_value(v: libc::uintptr_t)  {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_value` is never used
[INFO] [stdout]   --> src/cache_test.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn decode_value(v: *mut c_void) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `deleted_keys`, `deleted_values`, and `cache` are never read
[INFO] [stdout]   --> src/cache_test.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct CacheTest {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 49 |     deleted_keys:   Vec<i32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 50 |     deleted_values: Vec<i32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 51 |     cache:          *mut Cache,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `deleter`, `lookup`, `insert`, `insert_and_return_handle`, and `erase` are never used
[INFO] [stdout]    --> src/cache_test.rs:90:8
[INFO] [stdout]     |
[INFO] [stdout] 88  | impl CacheTest {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] 89  |
[INFO] [stdout] 90  |     fn deleter(
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn lookup(&mut self, key_: i32) -> i32 {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |     fn insert(&mut self, 
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 127 |     fn insert_and_return_handle(&mut self, 
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 140 |     fn erase(&mut self, key_: i32)  {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testcache_test_main` is never used
[INFO] [stdout]    --> src/cache_test.rs:351:4
[INFO] [stdout]     |
[INFO] [stdout] 351 | fn testcache_test_main (
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CACHE_SIZE` is never used
[INFO] [stdout]   --> src/cache_test.rs:58:15
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub const CACHE_SIZE: i32 = 1000;
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bitcoin_derive::*`
[INFO] [stdout]  --> src/imports.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) use bitcoin_derive::*;
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `capacity`
[INFO] [stdout]    --> src/cache.rs:160:22
[INFO] [stdout]     |
[INFO] [stdout] 160 | pub fn new_lru_cache(capacity: usize) -> *mut Cache {
[INFO] [stdout]     |                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_capacity`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cache.rs:201:34
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub fn lru_remove(&mut self, e: *mut CacheHandle)  {
[INFO] [stdout]     |                                  ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cache.rs:209:34
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn lru_append(&mut self, e: *mut CacheHandle)  {
[INFO] [stdout]     |                                  ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cache.rs:217:29
[INFO] [stdout]     |
[INFO] [stdout] 217 |     pub fn unref(&mut self, e: *mut CacheHandle)  {
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/cache_test.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn encode_key(k: i32) -> String {
[INFO] [stdout]    |               ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/cache_test.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn decode_key(k: &Slice) -> i32 {
[INFO] [stdout]    |               ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/cache_test.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn encode_value(v: libc::uintptr_t)  {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/cache_test.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn decode_value(v: *mut c_void) -> i32 {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_`
[INFO] [stdout]   --> src/cache_test.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         key_: &Slice,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_key_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/cache_test.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |         v:   *mut c_void)  {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_`
[INFO] [stdout]    --> src/cache_test.rs:101:26
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn lookup(&mut self, key_: i32) -> i32 {
[INFO] [stdout]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_key_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `charge`
[INFO] [stdout]    --> src/cache_test.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |         let charge: i32 = charge.unwrap_or(1);
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_charge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_`
[INFO] [stdout]    --> src/cache_test.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |         key_:    i32,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_key_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/cache_test.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |         value:  i32,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `charge`
[INFO] [stdout]    --> src/cache_test.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |         let charge: i32 = charge.unwrap_or(1);
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_charge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_`
[INFO] [stdout]    --> src/cache_test.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         key_:   i32,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_key_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/cache_test.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         value:  i32,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_`
[INFO] [stdout]    --> src/cache_test.rs:140:25
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn erase(&mut self, key_: i32)  {
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_key_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `argc`
[INFO] [stdout]    --> src/cache_test.rs:352:9
[INFO] [stdout]     |
[INFO] [stdout] 352 |         argc: i32,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_argc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `argv`
[INFO] [stdout]    --> src/cache_test.rs:353:9
[INFO] [stdout]     |
[INFO] [stdout] 353 |         argv: *mut *mut u8) -> i32 {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_argv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rep` is never read
[INFO] [stdout]    --> src/cache.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 179 | pub struct Cache {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 180 |     rep: Rc<RefCell<CacheRep>>,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_key` is never used
[INFO] [stdout]   --> src/cache_test.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn encode_key(k: i32) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_key` is never used
[INFO] [stdout]   --> src/cache_test.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn decode_key(k: &Slice) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_value` is never used
[INFO] [stdout]   --> src/cache_test.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn encode_value(v: libc::uintptr_t)  {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_value` is never used
[INFO] [stdout]   --> src/cache_test.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn decode_value(v: *mut c_void) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `deleted_keys`, `deleted_values`, and `cache` are never read
[INFO] [stdout]   --> src/cache_test.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct CacheTest {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 49 |     deleted_keys:   Vec<i32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 50 |     deleted_values: Vec<i32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 51 |     cache:          *mut Cache,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `deleter`, `lookup`, `insert`, `insert_and_return_handle`, and `erase` are never used
[INFO] [stdout]    --> src/cache_test.rs:90:8
[INFO] [stdout]     |
[INFO] [stdout] 88  | impl CacheTest {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] 89  |
[INFO] [stdout] 90  |     fn deleter(
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn lookup(&mut self, key_: i32) -> i32 {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |     fn insert(&mut self, 
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 127 |     fn insert_and_return_handle(&mut self, 
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 140 |     fn erase(&mut self, key_: i32)  {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testcache_test_main` is never used
[INFO] [stdout]    --> src/cache_test.rs:351:4
[INFO] [stdout]     |
[INFO] [stdout] 351 | fn testcache_test_main (
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CACHE_SIZE` is never used
[INFO] [stdout]   --> src/cache_test.rs:58:15
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub const CACHE_SIZE: i32 = 1000;
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 35s
[INFO] running `Command { std: "docker" "inspect" "fd919aa443e945f340bbbf85f6dfb9581a0edcc2ba7ca82468877221d8adc0f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd919aa443e945f340bbbf85f6dfb9581a0edcc2ba7ca82468877221d8adc0f2", kill_on_drop: false }`
[INFO] [stdout] fd919aa443e945f340bbbf85f6dfb9581a0edcc2ba7ca82468877221d8adc0f2
