[INFO] cloning repository https://github.com/remram44/lsmtree-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/remram44/lsmtree-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremram44%2Flsmtree-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremram44%2Flsmtree-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c76dde0d0532de674f397ad5b19331652514972
[INFO] testing remram44/lsmtree-rs against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremram44%2Flsmtree-rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/remram44/lsmtree-rs
[INFO] finished tweaking git repo https://github.com/remram44/lsmtree-rs
[INFO] tweaked toml for git repo https://github.com/remram44/lsmtree-rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/remram44/lsmtree-rs on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/remram44/lsmtree-rs 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b7bcf3a4d34351186c516c17ca526ab6780bdeb0bfa0fa4a6c8c241ed0ce077
[INFO] running `Command { std: "docker" "start" "-a" "0b7bcf3a4d34351186c516c17ca526ab6780bdeb0bfa0fa4a6c8c241ed0ce077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b7bcf3a4d34351186c516c17ca526ab6780bdeb0bfa0fa4a6c8c241ed0ce077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b7bcf3a4d34351186c516c17ca526ab6780bdeb0bfa0fa4a6c8c241ed0ce077", kill_on_drop: false }`
[INFO] [stdout] 0b7bcf3a4d34351186c516c17ca526ab6780bdeb0bfa0fa4a6c8c241ed0ce077
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42beecde569f9fac2dc7e200ee30d8a6d93cafe19c68e365711aad5cbda42ac1
[INFO] running `Command { std: "docker" "start" "-a" "42beecde569f9fac2dc7e200ee30d8a6d93cafe19c68e365711aad5cbda42ac1", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling lsmtree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `key_start`
[INFO] [stdout]    --> src/lib.rs:370:34
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stdout]     |                                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_start`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_end`
[INFO] [stdout]    --> src/lib.rs:370:52
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stdout]     |                                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `database` is never read
[INFO] [stdout]    --> src/lib.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 415 | pub struct RangeIterator<'a, S: Storage> {
[INFO] [stdout]     |            ------------- field in this struct
[INFO] [stdout] 416 |     database: &'a mut Database<S>,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter_range` is never used
[INFO] [stdout]   --> src/mem_table.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl MemTable {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub(crate) fn iter_range<'a>(&'a self, key_start: &'a [u8], key_end: &'a [u8]) -> MemTableRangeIterator<'a> {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MemTableRangeIterator` is never constructed
[INFO] [stdout]   --> src/mem_table.rs:48:19
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub(crate) struct MemTableRangeIterator<'a> {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:370:23
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stdout]     |                       ^^^^^^^^^ the lifetime is elided here           ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<'_, S> {
[INFO] [stdout]     |                                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.45s
[INFO] running `Command { std: "docker" "inspect" "42beecde569f9fac2dc7e200ee30d8a6d93cafe19c68e365711aad5cbda42ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42beecde569f9fac2dc7e200ee30d8a6d93cafe19c68e365711aad5cbda42ac1", kill_on_drop: false }`
[INFO] [stdout] 42beecde569f9fac2dc7e200ee30d8a6d93cafe19c68e365711aad5cbda42ac1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5ab2ecc8e9c78208c64d81c34c679e04665c91474182a705b920cb8046fd305
[INFO] running `Command { std: "docker" "start" "-a" "a5ab2ecc8e9c78208c64d81c34c679e04665c91474182a705b920cb8046fd305", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling lsmtree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `key_start`
[INFO] [stdout]    --> src/lib.rs:370:34
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stdout]     |                                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_start`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_end`
[INFO] [stdout]    --> src/lib.rs:370:52
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stdout]     |                                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `database` is never read
[INFO] [stdout]    --> src/lib.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 415 | pub struct RangeIterator<'a, S: Storage> {
[INFO] [stdout]     |            ------------- field in this struct
[INFO] [stdout] 416 |     database: &'a mut Database<S>,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter_range` is never used
[INFO] [stdout]   --> src/mem_table.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl MemTable {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub(crate) fn iter_range<'a>(&'a self, key_start: &'a [u8], key_end: &'a [u8]) -> MemTableRangeIterator<'a> {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MemTableRangeIterator` is never constructed
[INFO] [stdout]   --> src/mem_table.rs:48:19
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub(crate) struct MemTableRangeIterator<'a> {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:370:23
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stdout]     |                       ^^^^^^^^^ the lifetime is elided here           ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<'_, S> {
[INFO] [stdout]     |                                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling is-terminal v0.4.13
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling env_logger v0.10.2
[INFO] [stderr]    Compiling pretty_env_logger v0.5.0
[INFO] [stdout] warning: unused variable: `key_start`
[INFO] [stdout]    --> src/lib.rs:370:34
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stdout]     |                                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_start`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_end`
[INFO] [stdout]    --> src/lib.rs:370:52
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stdout]     |                                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `database` is never read
[INFO] [stdout]    --> src/lib.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 415 | pub struct RangeIterator<'a, S: Storage> {
[INFO] [stdout]     |            ------------- field in this struct
[INFO] [stdout] 416 |     database: &'a mut Database<S>,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:370:23
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stdout]     |                       ^^^^^^^^^ the lifetime is elided here           ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<'_, S> {
[INFO] [stdout]     |                                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 12.36s
[INFO] running `Command { std: "docker" "inspect" "a5ab2ecc8e9c78208c64d81c34c679e04665c91474182a705b920cb8046fd305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5ab2ecc8e9c78208c64d81c34c679e04665c91474182a705b920cb8046fd305", kill_on_drop: false }`
[INFO] [stdout] a5ab2ecc8e9c78208c64d81c34c679e04665c91474182a705b920cb8046fd305
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c90f2ed83b36366fe24562651e5643b31089a5ec0f1d1bc8fcda33681cad9121
[INFO] running `Command { std: "docker" "start" "-a" "c90f2ed83b36366fe24562651e5643b31089a5ec0f1d1bc8fcda33681cad9121", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `key_start`
[INFO] [stderr]    --> src/lib.rs:370:34
[INFO] [stderr]     |
[INFO] [stderr] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stderr]     |                                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key_end`
[INFO] [stderr]    --> src/lib.rs:370:52
[INFO] [stderr]     |
[INFO] [stderr] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stderr]     |                                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_end`
[INFO] [stderr] 
[INFO] [stderr] warning: field `database` is never read
[INFO] [stderr]    --> src/lib.rs:416:5
[INFO] [stderr]     |
[INFO] [stderr] 415 | pub struct RangeIterator<'a, S: Storage> {
[INFO] [stderr]     |            ------------- field in this struct
[INFO] [stderr] 416 |     database: &'a mut Database<S>,
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `iter_range` is never used
[INFO] [stdout] 
[INFO] [stderr]   --> src/mem_table.rs:38:19
[INFO] [stdout] running 3 tests
[INFO] [stderr]    |
[INFO] [stdout] test test_parse_sstable_name ... ok
[INFO] [stderr]  6 | impl MemTable {
[INFO] [stderr]    | ------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 38 |     pub(crate) fn iter_range<'a>(&'a self, key_start: &'a [u8], key_end: &'a [u8]) -> MemTableRangeIterator<'a> {
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MemTableRangeIterator` is never constructed
[INFO] [stderr]   --> src/mem_table.rs:48:19
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub(crate) struct MemTableRangeIterator<'a> {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:370:23
[INFO] [stderr]     |
[INFO] [stderr] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<S> {
[INFO] [stderr]     |                       ^^^^^^^^^ the lifetime is elided here           ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 370 |     pub fn iter_range(&mut self, key_start: &[u8], key_end: &[u8]) -> RangeIterator<'_, S> {
[INFO] [stderr]     |                                                                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: `lsmtree` (lib) generated 6 warnings (run `cargo fix --lib -p lsmtree` to apply 3 suggestions)
[INFO] [stderr] warning: `lsmtree` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lsmtree-6ca0e64d4d8aa906)
[INFO] [stdout] test mem_table::tests::test_memtable ... ok
[INFO] [stderr]  2025-11-09T06:32:12.298Z INFO  lsmtree > Opening empty database
[INFO] [stderr]  2025-11-09T06:32:12.299Z INFO  lsmtree > Writing memtable to new sstable '1-0.sst'
[INFO] [stderr]  2025-11-09T06:32:12.299Z INFO  lsmtree > New sstable write complete
[INFO] [stderr]  2025-11-09T06:32:12.299Z INFO  lsmtree > Truncating WAL
[INFO] [stdout] test tests::test_database ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::test_database stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::test_database' (27) panicked at src/lib.rs:423:9:
[INFO] [stdout] not yet implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x58ce0bccfc02 - std::backtrace_rs::backtrace::libunwind::trace::h16affffe904e891e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x58ce0bccfc02 - std::backtrace_rs::backtrace::trace_unsynchronized::h5c14b13373ed4150
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x58ce0bccfc02 - std::sys::backtrace::_print_fmt::hcbb507f162c816cc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x58ce0bccfc02 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8be9aa933f14675f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x58ce0bce122f - core::fmt::rt::Argument::fmt::h30ed739d33467c3a
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x58ce0bce122f - core::fmt::write::hfd0efbb002ac7eea
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x58ce0bc9bf73 - std::io::default_write_fmt::hd6d24501f2d7f8d3
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x58ce0bc9bf73 - std::io::Write::write_fmt::h79eca2f72fc24111
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x58ce0bca8842 - std::sys::backtrace::BacktraceLock::print::hf2554f6030d393f7
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x58ce0bcad65f - std::panicking::default_hook::{{closure}}::h8873121c56335b01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x58ce0bcad4f1 - std::panicking::default_hook::hbafefc2d196267a2
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x58ce0bc538de - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha834d5846f91b30b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x58ce0bc538de - test::test_main_with_exit_callback::{{closure}}::h63c167737eecb025
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x58ce0bcadc6f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbf9b0f7a281291fd
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x58ce0bcadc6f - std::panicking::panic_with_hook::h9f5b09d5adc1a745
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x58ce0bcada96 - std::panicking::panic_handler::{{closure}}::h08111e483bdf6a89
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:700:13
[INFO] [stdout]   16:     0x58ce0bca8979 - std::sys::backtrace::__rust_end_short_backtrace::h1b86e3414ecbbe8d
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x58ce0bc8ff1d - __rustc[b292c645e8102103]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x58ce0bce9cd0 - core::panicking::panic_fmt::h31cc490ecc8cc1fa
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x58ce0bce9cac - core::panicking::panic::h5cbcc2ceb0950681
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x58ce0b98248e - <lsmtree::RangeIterator<S> as core::iter::traits::iterator::Iterator>::next::h9c6f710fd6ca0c50
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:423:9
[INFO] [stdout]   21:     0x58ce0b985a2d - <alloc::vec::Vec<T> as alloc::vec::spec_from_iter_nested::SpecFromIterNested<T,I>>::from_iter::hcffcf12ce5bcadc9
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/vec/spec_from_iter_nested.rs:24:41
[INFO] [stdout]   22:     0x58ce0b988ab6 - <alloc::vec::Vec<T> as alloc::vec::spec_from_iter::SpecFromIter<T,I>>::from_iter::hf270fc563cb3e48f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/vec/spec_from_iter.rs:33:9
[INFO] [stdout]   23:     0x58ce0b988a42 - <alloc::vec::Vec<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::ha5ec89f8d98e38e0
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/vec/mod.rs:3689:9
[INFO] [stdout]   24:     0x58ce0b9782b6 - core::iter::traits::iterator::Iterator::collect::h88578dc63024b7db
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/iter/traits/iterator.rs:2028:9
[INFO] [stdout]   25:     0x58ce0b995252 - lsmtree::tests::test_database::hf0b9cf42c1a1dbf1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:504:43
[INFO] [stdout]   26:     0x58ce0b995e87 - lsmtree::tests::test_database::{{closure}}::h7d0faeefffb17af3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:472:23
[INFO] [stdout]   27:     0x58ce0b98ea06 - core::ops::function::FnOnce::call_once::ha941359e5633b066
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x58ce0bc536db - core::ops::function::FnOnce::call_once::h2b2de5fdd23aab3e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x58ce0bc536db - test::__rust_begin_short_backtrace::he551dd004770be01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x58ce0bc6773d - test::run_test_in_process::{{closure}}::h5f0b44080a35ed87
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x58ce0bc6773d - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4dbf65d14893ecf5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x58ce0bc6773d - std::panicking::catch_unwind::do_call::hc37c563b8a006285
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x58ce0bc6773d - std::panicking::catch_unwind::h616b6e2e7a27f612
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x58ce0bc6773d - std::panic::catch_unwind::h1e788dd57758e6d8
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x58ce0bc6773d - test::run_test_in_process::hf073c2764f29f8ad
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x58ce0bc6773d - test::run_test::{{closure}}::h3dc46b7a0c340fa6
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x58ce0bc40c84 - test::run_test::{{closure}}::h6a4da3c57ef4505f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x58ce0bc40c84 - std::sys::backtrace::__rust_begin_short_backtrace::hfd8e44bc311a5d57
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x58ce0bc444da - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h57c4ddec344fe24c
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x58ce0bc444da - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd7cbe09591f06dfb
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x58ce0bc444da - std::panicking::catch_unwind::do_call::hdcd076e8e993dfbc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x58ce0bc444da - std::panicking::catch_unwind::h8f9f675f3756eab1
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x58ce0bc444da - std::panic::catch_unwind::he8f74a93abeceb9b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x58ce0bc444da - std::thread::Builder::spawn_unchecked_::{{closure}}::he43db13a2caa41d5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x58ce0bc444da - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8f3531a7e0d83514
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x58ce0bca3d7f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6ff05134d80ef20e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x58ce0bca3d7f - std::sys::thread::unix::Thread::new::thread_start::h9a4a41a076a486e0
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x738f313c9aa4 - <unknown>
[INFO] [stdout]   49:     0x738f31456a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::test_database
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "c90f2ed83b36366fe24562651e5643b31089a5ec0f1d1bc8fcda33681cad9121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c90f2ed83b36366fe24562651e5643b31089a5ec0f1d1bc8fcda33681cad9121", kill_on_drop: false }`
[INFO] [stdout] c90f2ed83b36366fe24562651e5643b31089a5ec0f1d1bc8fcda33681cad9121
