[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 1.90.0 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-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/remram44/lsmtree-rs on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded is-terminal v0.4.13
[INFO] [stderr]   Downloaded hermit-abi v0.4.0
[INFO] [stderr]   Downloaded env_logger v0.10.2
[INFO] [stderr]   Downloaded pretty_env_logger v0.5.0
[INFO] [stderr]   Downloaded tempdir v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5312d61fa57008dac7cbd9d72bf538b6e5ff0b68540b2b79fb02f1d93c145c1d
[INFO] running `Command { std: "docker" "start" "-a" "5312d61fa57008dac7cbd9d72bf538b6e5ff0b68540b2b79fb02f1d93c145c1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5312d61fa57008dac7cbd9d72bf538b6e5ff0b68540b2b79fb02f1d93c145c1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5312d61fa57008dac7cbd9d72bf538b6e5ff0b68540b2b79fb02f1d93c145c1d", kill_on_drop: false }`
[INFO] [stdout] 5312d61fa57008dac7cbd9d72bf538b6e5ff0b68540b2b79fb02f1d93c145c1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6cba535c306d87d3d3fcb1b697f9663771bd7f8d9294018f333e014ac36452d
[INFO] running `Command { std: "docker" "start" "-a" "d6cba535c306d87d3d3fcb1b697f9663771bd7f8d9294018f333e014ac36452d", 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)]` 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)]` 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 1.97s
[INFO] running `Command { std: "docker" "inspect" "d6cba535c306d87d3d3fcb1b697f9663771bd7f8d9294018f333e014ac36452d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6cba535c306d87d3d3fcb1b697f9663771bd7f8d9294018f333e014ac36452d", kill_on_drop: false }`
[INFO] [stdout] d6cba535c306d87d3d3fcb1b697f9663771bd7f8d9294018f333e014ac36452d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fd805377f0bc2e692a1db678418bc222d40d4ca0ee0893d194d7da6d9bc4dc8
[INFO] running `Command { std: "docker" "start" "-a" "3fd805377f0bc2e692a1db678418bc222d40d4ca0ee0893d194d7da6d9bc4dc8", 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 humantime v2.1.0
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[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)]` 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)]` 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 tempdir v0.3.7
[INFO] [stderr]    Compiling regex-automata v0.4.9
[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)]` 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)]` 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 11.83s
[INFO] running `Command { std: "docker" "inspect" "3fd805377f0bc2e692a1db678418bc222d40d4ca0ee0893d194d7da6d9bc4dc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fd805377f0bc2e692a1db678418bc222d40d4ca0ee0893d194d7da6d9bc4dc8", kill_on_drop: false }`
[INFO] [stdout] 3fd805377f0bc2e692a1db678418bc222d40d4ca0ee0893d194d7da6d9bc4dc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 78f9393e5599f1f524b938fcab313bfe89bbc2c262b2d41668177f37e2cb123b
[INFO] running `Command { std: "docker" "start" "-a" "78f9393e5599f1f524b938fcab313bfe89bbc2c262b2d41668177f37e2cb123b", 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)]` 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)]` 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
[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-69959378c028923d)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_parse_sstable_name ... ok
[INFO] [stdout] test mem_table::tests::test_memtable ... ok
[INFO] [stderr]  2025-09-25T18:36:51.898Z INFO  lsmtree > Opening empty database
[INFO] [stderr]  2025-09-25T18:36:51.899Z INFO  lsmtree > Writing memtable to new sstable '1-0.sst'
[INFO] [stderr]  2025-09-25T18:36:51.899Z INFO  lsmtree > New sstable write complete
[INFO] [stderr]  2025-09-25T18:36:51.899Z 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' panicked at src/lib.rs:423:9:
[INFO] [stdout] not yet implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5a6527a0e882 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a6527a0e882 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a6527a0e882 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5a6527a0e882 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5a6527a35e03 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5a6527a35e03 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x5a6527a0b4d3 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a6527a0b4d3 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5a6527a0e6d2 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5a6527a10149 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x5a6527a0ff7e - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x5a65279ba7d4 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x5a65279ba7d4 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a6527a10c1e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x5a6527a10c1e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x5a6527a108b6 - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:699:13
[INFO] [stdout]   16:     0x5a6527a0ed89 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5a6527a1057d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x5a6527a33af0 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5a6527a33b7c - core::panicking::panic::h89a5f2df32b0508a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:145:5
[INFO] [stdout]   20:     0x5a65276d114e - <lsmtree::RangeIterator<S> as core::iter::traits::iterator::Iterator>::next::h5f8cb4251df85916
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:423:9
[INFO] [stdout]   21:     0x5a65276d28d6 - <alloc::vec::Vec<T> as alloc::vec::spec_from_iter_nested::SpecFromIterNested<T,I>>::from_iter::h8068b074eb27d7e4
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/vec/spec_from_iter_nested.rs:25:41
[INFO] [stdout]   22:     0x5a65276d59f6 - <alloc::vec::Vec<T> as alloc::vec::spec_from_iter::SpecFromIter<T,I>>::from_iter::h9c6875f600c55796
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/vec/spec_from_iter.rs:34:9
[INFO] [stdout]   23:     0x5a65276d593a - <alloc::vec::Vec<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::h275f4f00b3b58d3e
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/vec/mod.rs:3633:9
[INFO] [stdout]   24:     0x5a65276c83f8 - core::iter::traits::iterator::Iterator::collect::hc8b2c83da4828d42
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/iter/traits/iterator.rs:2027:9
[INFO] [stdout]   25:     0x5a65276e2b02 - lsmtree::tests::test_database::he3ac2377e679fbd6
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:504:43
[INFO] [stdout]   26:     0x5a65276e17b7 - lsmtree::tests::test_database::{{closure}}::h4bb9548038f54f0e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:472:23
[INFO] [stdout]   27:     0x5a65276d6d26 - core::ops::function::FnOnce::call_once::h8a6e992fb014064f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   28:     0x5a65279c003b - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   29:     0x5a65279c003b - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   30:     0x5a65279bf175 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   31:     0x5a65279bf175 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   32:     0x5a65279bf175 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   33:     0x5a65279bf175 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   34:     0x5a65279bf175 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x5a65279bf175 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   36:     0x5a65279bf175 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   37:     0x5a6527982d74 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   38:     0x5a6527982d74 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x5a652798674a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   40:     0x5a652798674a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   41:     0x5a652798674a - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   42:     0x5a652798674a - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   43:     0x5a652798674a - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x5a652798674a - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   45:     0x5a652798674a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   46:     0x5a6527a13b9f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   47:     0x5a6527a13b9f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   48:     0x7422e61e9aa4 - <unknown>
[INFO] [stdout]   49:     0x7422e6276a34 - 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" "78f9393e5599f1f524b938fcab313bfe89bbc2c262b2d41668177f37e2cb123b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78f9393e5599f1f524b938fcab313bfe89bbc2c262b2d41668177f37e2cb123b", kill_on_drop: false }`
[INFO] [stdout] 78f9393e5599f1f524b938fcab313bfe89bbc2c262b2d41668177f37e2cb123b
