[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 master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[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 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 111e99b92e7b54aff497b1ad20d31219baf90a5e82aab437d7b40e5b873fa28a
[INFO] running `Command { std: "docker" "start" "-a" "111e99b92e7b54aff497b1ad20d31219baf90a5e82aab437d7b40e5b873fa28a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "111e99b92e7b54aff497b1ad20d31219baf90a5e82aab437d7b40e5b873fa28a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "111e99b92e7b54aff497b1ad20d31219baf90a5e82aab437d7b40e5b873fa28a", kill_on_drop: false }`
[INFO] [stdout] 111e99b92e7b54aff497b1ad20d31219baf90a5e82aab437d7b40e5b873fa28a
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac57289abfc1eb0db21c310cdc5d614a449fe3fde528aef32c4df2d326af99dc
[INFO] running `Command { std: "docker" "start" "-a" "ac57289abfc1eb0db21c310cdc5d614a449fe3fde528aef32c4df2d326af99dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling pin-project-lite v0.2.15
[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: lifetime flowing from input to output with different syntax can be 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]     |                       ^^^^^^^^^ this lifetime flows to the output     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for 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 2.90s
[INFO] running `Command { std: "docker" "inspect" "ac57289abfc1eb0db21c310cdc5d614a449fe3fde528aef32c4df2d326af99dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac57289abfc1eb0db21c310cdc5d614a449fe3fde528aef32c4df2d326af99dc", kill_on_drop: false }`
[INFO] [stdout] ac57289abfc1eb0db21c310cdc5d614a449fe3fde528aef32c4df2d326af99dc
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3ef10b7382e80f14d6859ea182075cb14b4a4c63dd914dae07614520f545d35
[INFO] running `Command { std: "docker" "start" "-a" "f3ef10b7382e80f14d6859ea182075cb14b4a4c63dd914dae07614520f545d35", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[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] [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: lifetime flowing from input to output with different syntax can be 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]     |                       ^^^^^^^^^ this lifetime flows to the output     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for 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 aho-corasick v1.1.3
[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)]` 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: lifetime flowing from input to output with different syntax can be 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]     |                       ^^^^^^^^^ this lifetime flows to the output     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for 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 56.62s
[INFO] running `Command { std: "docker" "inspect" "f3ef10b7382e80f14d6859ea182075cb14b4a4c63dd914dae07614520f545d35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3ef10b7382e80f14d6859ea182075cb14b4a4c63dd914dae07614520f545d35", kill_on_drop: false }`
[INFO] [stdout] f3ef10b7382e80f14d6859ea182075cb14b4a4c63dd914dae07614520f545d35
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1fd058059a30eb947d73b02b59b9760409afe8821986424d83832c5b277af997
[INFO] running `Command { std: "docker" "start" "-a" "1fd058059a30eb947d73b02b59b9760409afe8821986424d83832c5b277af997", 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: lifetime flowing from input to output with different syntax can be 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]     |                       ^^^^^^^^^ this lifetime flows to the output     ---------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for 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 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lsmtree-648a169bbba93467)
[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]  2025-10-13T10:40:27.056Z INFO  lsmtree > Opening empty database
[INFO] [stderr]  2025-10-13T10:40:27.056Z INFO  lsmtree > Writing memtable to new sstable '1-0.sst'
[INFO] [stderr]  2025-10-13T10:40:27.056Z INFO  lsmtree > New sstable write complete
[INFO] [stderr]  2025-10-13T10:40:27.056Z 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:     0x60d3c5be67d2 - std::backtrace_rs::backtrace::libunwind::trace::h73a647620bf1c49d
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x60d3c5be67d2 - std::backtrace_rs::backtrace::trace_unsynchronized::hd4d513ed96cb3cb1
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x60d3c5be67d2 - std::sys::backtrace::_print_fmt::h61bb95f7476aafa5
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x60d3c5be67d2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha2e7e3a01df69042
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x60d3c5c0d9e3 - core::fmt::rt::Argument::fmt::hf14163372f0f9a76
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x60d3c5c0d9e3 - core::fmt::write::h7cb8f63788cd01d2
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/fmt/mod.rs:1465:25
[INFO] [stdout]    6:     0x60d3c5be3433 - std::io::default_write_fmt::h9ed739ccee8a150c
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x60d3c5be3433 - std::io::Write::write_fmt::h1c0a32da913b32f1
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x60d3c5be6622 - std::sys::backtrace::BacktraceLock::print::h3ec4d7883eb25e61
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x60d3c5be808c - std::panicking::default_hook::{{closure}}::h29548987efd832cb
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x60d3c5be7ee2 - std::panicking::default_hook::ha25170a15c643514
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x60d3c5ba90a4 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h562adeecbf43c420
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x60d3c5ba90a4 - test::test_main_with_exit_callback::{{closure}}::h97dd2a879d27e0e4
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x60d3c5be8b6b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7e85cbdbda26fdb7
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x60d3c5be8b6b - std::panicking::rust_panic_with_hook::h0d81afcd829aa24b
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x60d3c5be8806 - std::panicking::begin_panic_handler::{{closure}}::hc84a33f1202346cf
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:699:13
[INFO] [stdout]   16:     0x60d3c5be6cc9 - std::sys::backtrace::__rust_end_short_backtrace::h373067a14f6c59aa
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x60d3c5be84cd - __rustc[beb0385846a06d21]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x60d3c5c0b870 - core::panicking::panic_fmt::ha33fa2ae772efba9
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x60d3c5c0b8dc - core::panicking::panic::hd2a569f4f37f7e10
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/panicking.rs:145:5
[INFO] [stdout]   20:     0x60d3c5a92daa - <lsmtree::RangeIterator<S> as core::iter::traits::iterator::Iterator>::next::hbf2a6e547131cb3e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:423:9
[INFO] [stdout]   21:     0x60d3c5a96cd7 - <alloc::vec::Vec<T> as alloc::vec::spec_from_iter_nested::SpecFromIterNested<T,I>>::from_iter::hb1634014e093a6db
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/vec/spec_from_iter_nested.rs:25:41
[INFO] [stdout]   22:     0x60d3c5a96cd7 - <alloc::vec::Vec<T> as alloc::vec::spec_from_iter::SpecFromIter<T,I>>::from_iter::h078d3109c2e50a0a
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/vec/spec_from_iter.rs:34:9
[INFO] [stdout]   23:     0x60d3c5a96cd7 - <alloc::vec::Vec<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::hf99061ad06107ba8
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/vec/mod.rs:3525:9
[INFO] [stdout]   24:     0x60d3c5a96cd7 - core::iter::traits::iterator::Iterator::collect::hf29d6778e4f23f7a
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/iter/traits/iterator.rs:2027:9
[INFO] [stdout]   25:     0x60d3c5a96cd7 - lsmtree::tests::test_database::h418d35b89b2388ed
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:504:43
[INFO] [stdout]   26:     0x60d3c5a8ef89 - lsmtree::tests::test_database::{{closure}}::h8da0e8bc9a3e84e0
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:472:23
[INFO] [stdout]   27:     0x60d3c5a8ef89 - core::ops::function::FnOnce::call_once::h979105b5a341d87a
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x60d3c5bae7db - core::ops::function::FnOnce::call_once::hf84b9c3d864a6959
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x60d3c5bae7db - test::__rust_begin_short_backtrace::h5724e31441c16fcb
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:648:18
[INFO] [stdout]   30:     0x60d3c5bada1e - test::run_test_in_process::{{closure}}::hbc28c9aa91793d7d
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:671:74
[INFO] [stdout]   31:     0x60d3c5bada1e - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hc17b0e238c0f8f3e
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   32:     0x60d3c5bada1e - std::panicking::catch_unwind::do_call::hcdbce0d6dd6c83ce
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:589:40
[INFO] [stdout]   33:     0x60d3c5bada1e - std::panicking::catch_unwind::h9477967ceea044e8
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:552:19
[INFO] [stdout]   34:     0x60d3c5bada1e - std::panic::catch_unwind::h616a2e249da12e16
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x60d3c5bada1e - test::run_test_in_process::h2758deb0f2e54430
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:671:27
[INFO] [stdout]   36:     0x60d3c5bada1e - test::run_test::{{closure}}::habe5cd2564b18aaa
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:592:43
[INFO] [stdout]   37:     0x60d3c5b715c4 - test::run_test::{{closure}}::h9a0a6928f1a15421
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:622:41
[INFO] [stdout]   38:     0x60d3c5b715c4 - std::sys::backtrace::__rust_begin_short_backtrace::hd68b5332434a22ca
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   39:     0x60d3c5b74f6a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h264ddcc3098eacae
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   40:     0x60d3c5b74f6a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9fa39489749d6f3c
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   41:     0x60d3c5b74f6a - std::panicking::catch_unwind::do_call::hb9a1944b9f85100f
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:589:40
[INFO] [stdout]   42:     0x60d3c5b74f6a - std::panicking::catch_unwind::h0c6f100786c0dad8
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:552:19
[INFO] [stdout]   43:     0x60d3c5b74f6a - std::panic::catch_unwind::hf6084e2723385823
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x60d3c5b74f6a - std::thread::Builder::spawn_unchecked_::{{closure}}::hf0af58ce658143ad
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   45:     0x60d3c5b74f6a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h88a14f9b2e79f9de
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x60d3c5bebac7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf31256ba38644b65
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   47:     0x60d3c5bebac7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h100ad77f3448041b
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   48:     0x60d3c5bebac7 - std::sys::pal::unix::thread::Thread::new::thread_start::h1a22ded422ce395b
[INFO] [stdout]                                at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   49:     0x70d02dd31aa4 - <unknown>
[INFO] [stdout]   50:     0x70d02ddbea34 - clone
[INFO] [stdout]   51:                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 0.13s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "1fd058059a30eb947d73b02b59b9760409afe8821986424d83832c5b277af997", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fd058059a30eb947d73b02b59b9760409afe8821986424d83832c5b277af997", kill_on_drop: false }`
[INFO] [stdout] 1fd058059a30eb947d73b02b59b9760409afe8821986424d83832c5b277af997
