[INFO] crate rdms 0.0.1 is already in cache
[INFO] checking rdms-0.0.1 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate rdms 0.0.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rdms 0.0.1 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rdms 0.0.1
[INFO] finished tweaking crates.io crate rdms 0.0.1
[INFO] tweaked toml for crates.io crate rdms 0.0.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3eb099ebb427e8ee6c2cef904c42ad0b64e051250a7e64ebe7c3fc1bd092c4bb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "3eb099ebb427e8ee6c2cef904c42ad0b64e051250a7e64ebe7c3fc1bd092c4bb"`
[INFO] [stderr]     Checking unicode_reader v0.1.1
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking jsondata v0.6.2
[INFO] [stderr]     Checking rdms v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never read: `config`
[INFO] [stderr]   --> src/rdms.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     config: Config,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated const is never used: `BATCH_SIZE`
[INFO] [stderr]   --> src/scans.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     const BATCH_SIZE: usize = 1000;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/scans.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub(crate) fn new(index: &'a M, within: G) -> SkipScan<M, K, V, G> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_batch_size`
[INFO] [stderr]   --> src/scans.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub(crate) fn set_batch_size(&mut self, batch_size: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Levels`
[INFO] [stderr]   --> src/robt.rs:78:8
[INFO] [stderr]    |
[INFO] [stderr] 78 | struct Levels<K, V>(AtomicPtr<Arc<Vec<Snapshot<K, V>>>>)
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/robt.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn new() -> Levels<K, V> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_snapshots`
[INFO] [stderr]   --> src/robt.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn get_snapshots(&self) -> Arc<Vec<Snapshot<K, V>>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `compare_swap_snapshots`
[INFO] [stderr]   --> src/robt.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn compare_swap_snapshots(&self, new_snapshots: Vec<Snapshot<K, V>>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Robt`
[INFO] [stderr]    --> src/robt.rs:105:19
[INFO] [stderr]     |
[INFO] [stderr] 105 | pub(crate) struct Robt<K, V, M>
[INFO] [stderr]     |                   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated const is never used: `MEM_RATIO`
[INFO] [stderr]    --> src/robt.rs:128:5
[INFO] [stderr]     |
[INFO] [stderr] 128 |     const MEM_RATIO: f64 = 0.2;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated const is never used: `DISK_RATIO`
[INFO] [stderr]    --> src/robt.rs:129:5
[INFO] [stderr]     |
[INFO] [stderr] 129 |     const DISK_RATIO: f64 = 0.5;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/robt.rs:131:5
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub(crate) fn new(config: Config) -> Robt<K, V, M> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_mem_ratio`
[INFO] [stderr]    --> src/robt.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     pub(crate) fn set_mem_ratio(mut self, ratio: f64) -> Robt<K, V, M> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_disk_ratio`
[INFO] [stderr]    --> src/robt.rs:147:5
[INFO] [stderr]     |
[INFO] [stderr] 147 |     pub(crate) fn set_disk_ratio(mut self, ratio: f64) -> Robt<K, V, M> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `flush_to_disk`
[INFO] [stderr]    --> src/robt.rs:161:5
[INFO] [stderr]     |
[INFO] [stderr] 161 | /     pub(crate) fn flush_to_disk(
[INFO] [stderr] 162 | |         &mut self,
[INFO] [stderr] 163 | |         index: Arc<M>, // full table scan over mem-index
[INFO] [stderr] 164 | |         app_meta: Vec<u8>,
[INFO] [stderr] ...   |
[INFO] [stderr] 172 | |         Ok(())
[INFO] [stderr] 173 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Request`
[INFO] [stderr]    --> src/robt.rs:176:6
[INFO] [stderr]     |
[INFO] [stderr] 176 | enum Request<K, V, M>
[INFO] [stderr]     |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Response`
[INFO] [stderr]    --> src/robt.rs:191:6
[INFO] [stderr]     |
[INFO] [stderr] 191 | enum Response {
[INFO] [stderr]     |      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MemToDisk`
[INFO] [stderr]    --> src/robt.rs:195:8
[INFO] [stderr]     |
[INFO] [stderr] 195 | struct MemToDisk<K, V, M>
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/robt.rs:214:5
[INFO] [stderr]     |
[INFO] [stderr] 214 |     fn new(config: Config) -> MemToDisk<K, V, M> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `send`
[INFO] [stderr]    --> src/robt.rs:225:5
[INFO] [stderr]     |
[INFO] [stderr] 225 |     fn send(&mut self, req: Request<K, V, M>) -> Result<Response> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `close_wait`
[INFO] [stderr]    --> src/robt.rs:231:5
[INFO] [stderr]     |
[INFO] [stderr] 231 |     fn close_wait(self) -> Result<()> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `thread_mem_to_disk`
[INFO] [stderr]    --> src/robt.rs:243:4
[INFO] [stderr]     |
[INFO] [stderr] 243 | fn thread_mem_to_disk<K, V, M>(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DiskCompact`
[INFO] [stderr]    --> src/robt.rs:257:8
[INFO] [stderr]     |
[INFO] [stderr] 257 | struct DiskCompact<K, V, M>
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/robt.rs:276:5
[INFO] [stderr]     |
[INFO] [stderr] 276 |     fn new(config: Config) -> DiskCompact<K, V, M> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `send`
[INFO] [stderr]    --> src/robt.rs:287:5
[INFO] [stderr]     |
[INFO] [stderr] 287 |     fn send(&mut self, req: Request<K, V, M>) -> Result<Response> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `close_wait`
[INFO] [stderr]    --> src/robt.rs:293:5
[INFO] [stderr]     |
[INFO] [stderr] 293 |     fn close_wait(self) -> Result<()> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `thread_disk_compact`
[INFO] [stderr]    --> src/robt.rs:305:4
[INFO] [stderr]     |
[INFO] [stderr] 305 | fn thread_disk_compact<K, V, M>(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:46:12
[INFO] [stderr]    |
[INFO] [stderr] 46 | #![feature(bind_by_move_pattern_guards)]
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rdms::RWSpinlock`
[INFO] [stderr]  --> benches/gate_bench.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rdms::RWSpinlock;
[INFO] [stderr]   |     ^^^^^^----------
[INFO] [stderr]   |     |     |
[INFO] [stderr]   |     |     help: a similar name exists in the module: `spinlock`
[INFO] [stderr]   |     no `RWSpinlock` in the root
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `rdms`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: function is never used: `log_entry`
[INFO] [stderr]     --> src/lsm_test.rs:1695:4
[INFO] [stderr]      |
[INFO] [stderr] 1695 | fn log_entry(e: &Entry<i64, i64>) {
[INFO] [stderr]      |    ^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `config`
[INFO] [stderr]   --> src/rdms.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     config: Config,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_batch_size`
[INFO] [stderr]   --> src/scans.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub(crate) fn set_batch_size(&mut self, batch_size: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Levels`
[INFO] [stderr]   --> src/robt.rs:78:8
[INFO] [stderr]    |
[INFO] [stderr] 78 | struct Levels<K, V>(AtomicPtr<Arc<Vec<Snapshot<K, V>>>>)
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/robt.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn new() -> Levels<K, V> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_snapshots`
[INFO] [stderr]   --> src/robt.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn get_snapshots(&self) -> Arc<Vec<Snapshot<K, V>>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `compare_swap_snapshots`
[INFO] [stderr]   --> src/robt.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn compare_swap_snapshots(&self, new_snapshots: Vec<Snapshot<K, V>>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Robt`
[INFO] [stderr]    --> src/robt.rs:105:19
[INFO] [stderr]     |
[INFO] [stderr] 105 | pub(crate) struct Robt<K, V, M>
[INFO] [stderr]     |                   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated const is never used: `MEM_RATIO`
[INFO] [stderr]    --> src/robt.rs:128:5
[INFO] [stderr]     |
[INFO] [stderr] 128 |     const MEM_RATIO: f64 = 0.2;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated const is never used: `DISK_RATIO`
[INFO] [stderr]    --> src/robt.rs:129:5
[INFO] [stderr]     |
[INFO] [stderr] 129 |     const DISK_RATIO: f64 = 0.5;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/robt.rs:131:5
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub(crate) fn new(config: Config) -> Robt<K, V, M> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_mem_ratio`
[INFO] [stderr]    --> src/robt.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     pub(crate) fn set_mem_ratio(mut self, ratio: f64) -> Robt<K, V, M> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_disk_ratio`
[INFO] [stderr]    --> src/robt.rs:147:5
[INFO] [stderr]     |
[INFO] [stderr] 147 |     pub(crate) fn set_disk_ratio(mut self, ratio: f64) -> Robt<K, V, M> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `flush_to_disk`
[INFO] [stderr]    --> src/robt.rs:161:5
[INFO] [stderr]     |
[INFO] [stderr] 161 | /     pub(crate) fn flush_to_disk(
[INFO] [stderr] 162 | |         &mut self,
[INFO] [stderr] 163 | |         index: Arc<M>, // full table scan over mem-index
[INFO] [stderr] 164 | |         app_meta: Vec<u8>,
[INFO] [stderr] ...   |
[INFO] [stderr] 172 | |         Ok(())
[INFO] [stderr] 173 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Request`
[INFO] [stderr]    --> src/robt.rs:176:6
[INFO] [stderr]     |
[INFO] [stderr] 176 | enum Request<K, V, M>
[INFO] [stderr]     |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Response`
[INFO] [stderr]    --> src/robt.rs:191:6
[INFO] [stderr]     |
[INFO] [stderr] 191 | enum Response {
[INFO] [stderr]     |      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MemToDisk`
[INFO] [stderr]    --> src/robt.rs:195:8
[INFO] [stderr]     |
[INFO] [stderr] 195 | struct MemToDisk<K, V, M>
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/robt.rs:214:5
[INFO] [stderr]     |
[INFO] [stderr] 214 |     fn new(config: Config) -> MemToDisk<K, V, M> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `send`
[INFO] [stderr]    --> src/robt.rs:225:5
[INFO] [stderr]     |
[INFO] [stderr] 225 |     fn send(&mut self, req: Request<K, V, M>) -> Result<Response> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `close_wait`
[INFO] [stderr]    --> src/robt.rs:231:5
[INFO] [stderr]     |
[INFO] [stderr] 231 |     fn close_wait(self) -> Result<()> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `thread_mem_to_disk`
[INFO] [stderr]    --> src/robt.rs:243:4
[INFO] [stderr]     |
[INFO] [stderr] 243 | fn thread_mem_to_disk<K, V, M>(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DiskCompact`
[INFO] [stderr]    --> src/robt.rs:257:8
[INFO] [stderr]     |
[INFO] [stderr] 257 | struct DiskCompact<K, V, M>
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/robt.rs:276:5
[INFO] [stderr]     |
[INFO] [stderr] 276 |     fn new(config: Config) -> DiskCompact<K, V, M> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `send`
[INFO] [stderr]    --> src/robt.rs:287:5
[INFO] [stderr]     |
[INFO] [stderr] 287 |     fn send(&mut self, req: Request<K, V, M>) -> Result<Response> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `close_wait`
[INFO] [stderr]    --> src/robt.rs:293:5
[INFO] [stderr]     |
[INFO] [stderr] 293 |     fn close_wait(self) -> Result<()> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `thread_disk_compact`
[INFO] [stderr]    --> src/robt.rs:305:4
[INFO] [stderr]     |
[INFO] [stderr] 305 | fn thread_disk_compact<K, V, M>(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:46:12
[INFO] [stderr]    |
[INFO] [stderr] 46 | #![feature(bind_by_move_pattern_guards)]
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]    --> src/wal_test.rs:757:49
[INFO] [stderr]     |
[INFO] [stderr] 757 |         .zip([(1, 213), (214, 421), (422, 610)].into_iter());
[INFO] [stderr]     |                                                 ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]    --> src/wal_test.rs:793:59
[INFO] [stderr]     |
[INFO] [stderr] 793 |     let cases = files.iter().zip([(214, 421), (422, 610)].into_iter());
[INFO] [stderr]     |                                                           ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]    --> src/wal_test.rs:841:10
[INFO] [stderr]     |
[INFO] [stderr] 841 |         .into_iter(),
[INFO] [stderr]     |          ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "3eb099ebb427e8ee6c2cef904c42ad0b64e051250a7e64ebe7c3fc1bd092c4bb"`
[INFO] running `"docker" "rm" "-f" "3eb099ebb427e8ee6c2cef904c42ad0b64e051250a7e64ebe7c3fc1bd092c4bb"`
[INFO] [stdout] 3eb099ebb427e8ee6c2cef904c42ad0b64e051250a7e64ebe7c3fc1bd092c4bb
