[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 beta-2025-09-21 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremram44%2Flsmtree-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-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-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/remram44/lsmtree-rs on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfebb5e924d124bdfdd1013f270176a5302b117f820cb66c904042a144bc4e76
[INFO] running `Command { std: "docker" "start" "-a" "dfebb5e924d124bdfdd1013f270176a5302b117f820cb66c904042a144bc4e76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfebb5e924d124bdfdd1013f270176a5302b117f820cb66c904042a144bc4e76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfebb5e924d124bdfdd1013f270176a5302b117f820cb66c904042a144bc4e76", kill_on_drop: false }`
[INFO] [stdout] dfebb5e924d124bdfdd1013f270176a5302b117f820cb66c904042a144bc4e76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4824496f2604b5db0651d7497b35c0dc9ef73f6cdcb30023e8f15d7d4f3c348
[INFO] running `Command { std: "docker" "start" "-a" "e4824496f2604b5db0651d7497b35c0dc9ef73f6cdcb30023e8f15d7d4f3c348", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling pin-project-lite v0.2.15
[INFO] [stderr]    Compiling byteorder v1.5.0
[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 1.69s
[INFO] running `Command { std: "docker" "inspect" "e4824496f2604b5db0651d7497b35c0dc9ef73f6cdcb30023e8f15d7d4f3c348", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4824496f2604b5db0651d7497b35c0dc9ef73f6cdcb30023e8f15d7d4f3c348", kill_on_drop: false }`
[INFO] [stdout] e4824496f2604b5db0651d7497b35c0dc9ef73f6cdcb30023e8f15d7d4f3c348
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 335a382e7de4cfc9491169e006293d97753966644cb96478d3cba914016d1063
[INFO] running `Command { std: "docker" "start" "-a" "335a382e7de4cfc9491169e006293d97753966644cb96478d3cba914016d1063", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling lsmtree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[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 9.44s
[INFO] running `Command { std: "docker" "inspect" "335a382e7de4cfc9491169e006293d97753966644cb96478d3cba914016d1063", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "335a382e7de4cfc9491169e006293d97753966644cb96478d3cba914016d1063", kill_on_drop: false }`
[INFO] [stdout] 335a382e7de4cfc9491169e006293d97753966644cb96478d3cba914016d1063
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d3df639eed6950bff8b56c801ec9eea5a0e0a1f7399cbf1d04a7b4e35790a29d
[INFO] running `Command { std: "docker" "start" "-a" "d3df639eed6950bff8b56c801ec9eea5a0e0a1f7399cbf1d04a7b4e35790a29d", 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] [stderr]   --> src/mem_table.rs:38:19
[INFO] [stderr]    |
[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 1 suggestion)
[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-8e689c801305519d)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test mem_table::tests::test_memtable ... ok
[INFO] [stdout] test test_parse_sstable_name ... ok
[INFO] [stderr]  2025-09-25T18:37:07.241Z INFO  lsmtree > Opening empty database
[INFO] [stderr]  2025-09-25T18:37:07.242Z INFO  lsmtree > Writing memtable to new sstable '1-0.sst'
[INFO] [stderr]  2025-09-25T18:37:07.242Z INFO  lsmtree > New sstable write complete
[INFO] [stderr]  2025-09-25T18:37:07.242Z 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' (26) panicked at src/lib.rs:423:9:
[INFO] [stdout] not yet implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x6273a276fd62 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x6273a276fd62 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x6273a276fd62 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x6273a276fd62 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x6273a278164f - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x6273a278164f - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x6273a273bb21 - std::io::default_write_fmt::h69967ac0ba93195f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x6273a273bb21 - std::io::Write::write_fmt::h8db9396209deaa1c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x6273a27486c2 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x6273a274d55f - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x6273a274d3f1 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x6273a26f014e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h18383b2e29377420
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x6273a26f014e - test::test_main_with_exit_callback::{{closure}}::h272d7ef99aef06dc
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x6273a274dc1f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6dba6e441651a0d1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x6273a274dc1f - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x6273a274da46 - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:700:13
[INFO] [stdout]   16:     0x6273a27487f9 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x6273a272f7ad - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x6273a278a170 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x6273a278a14c - core::panicking::panic::h355c5fec13755e30
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:145:5
[INFO] [stdout]   20:     0x6273a241459e - <lsmtree::RangeIterator<S> as core::iter::traits::iterator::Iterator>::next::h538cbcc9d7a2b933
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:423:9
[INFO] [stdout]   21:     0x6273a2414936 - <alloc::vec::Vec<T> as alloc::vec::spec_from_iter_nested::SpecFromIterNested<T,I>>::from_iter::hae61779883679fad
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/vec/spec_from_iter_nested.rs:25:41
[INFO] [stdout]   22:     0x6273a2417c36 - <alloc::vec::Vec<T> as alloc::vec::spec_from_iter::SpecFromIter<T,I>>::from_iter::hae781e4db35a29ce
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/vec/spec_from_iter.rs:34:9
[INFO] [stdout]   23:     0x6273a2417bda - <alloc::vec::Vec<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::h456f96a21b99a699
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/vec/mod.rs:3683:9
[INFO] [stdout]   24:     0x6273a240a398 - core::iter::traits::iterator::Iterator::collect::h9778bd23a2295986
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/iter/traits/iterator.rs:2027:9
[INFO] [stdout]   25:     0x6273a241c4d2 - lsmtree::tests::test_database::h308595a4ece86339
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:504:43
[INFO] [stdout]   26:     0x6273a241d107 - lsmtree::tests::test_database::{{closure}}::h7f1edffc01e80107
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:472:23
[INFO] [stdout]   27:     0x6273a241e7e6 - core::ops::function::FnOnce::call_once::h40c6d99ad42eee9c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x6273a26eff0b - core::ops::function::FnOnce::call_once::h70887edf07a630ba
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x6273a26eff0b - test::__rust_begin_short_backtrace::h27763c4cbbdb8601
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x6273a2705b75 - test::run_test_in_process::{{closure}}::h4dc8bc6d5e3924d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x6273a2705b75 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h75905e8ffe81974f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x6273a2705b75 - std::panicking::catch_unwind::do_call::h0bc60366ba66eba5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x6273a2705b75 - std::panicking::catch_unwind::hae1ec7bf94407afa
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x6273a2705b75 - std::panic::catch_unwind::h0f4ff4773d84d3cd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x6273a2705b75 - test::run_test_in_process::h03fbc77ae48b3f10
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x6273a2705b75 - test::run_test::{{closure}}::h83476a9c453dc4d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x6273a26dc364 - test::run_test::{{closure}}::h515482ad1e7fe7de
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x6273a26dc364 - std::sys::backtrace::__rust_begin_short_backtrace::hed09f6ac5fe9d647
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x6273a26dfc2a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h988e2cd969319888
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   40:     0x6273a26dfc2a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd70e28dc46ec20be
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x6273a26dfc2a - std::panicking::catch_unwind::do_call::hdc29e11311eb7655
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x6273a26dfc2a - std::panicking::catch_unwind::h9e402d6a96fef41c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x6273a26dfc2a - std::panic::catch_unwind::h9213c0c54aec70e0
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x6273a26dfc2a - std::thread::Builder::spawn_unchecked_::{{closure}}::h6262965869ed2b87
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   45:     0x6273a26dfc2a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h05c05ed02619e462
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x6273a274395f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2044e71c41d3958a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   47:     0x6273a274395f - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   48:     0x7cd349000aa4 - <unknown>
[INFO] [stdout]   49:     0x7cd34908da34 - 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" "d3df639eed6950bff8b56c801ec9eea5a0e0a1f7399cbf1d04a7b4e35790a29d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3df639eed6950bff8b56c801ec9eea5a0e0a1f7399cbf1d04a7b4e35790a29d", kill_on_drop: false }`
[INFO] [stdout] d3df639eed6950bff8b56c801ec9eea5a0e0a1f7399cbf1d04a7b4e35790a29d
