[INFO] cloning repository https://github.com/nikhilknit/Mini-LSM
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nikhilknit/Mini-LSM" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikhilknit%2FMini-LSM", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikhilknit%2FMini-LSM'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac119f66af48511b94b95f5b3dde4f902c6d692d
[INFO] testing nikhilknit/Mini-LSM against master#1ef7943ee607160a564655b6596f83670ef95df5 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikhilknit%2FMini-LSM" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/nikhilknit/Mini-LSM
[INFO] finished tweaking git repo https://github.com/nikhilknit/Mini-LSM
[INFO] tweaked toml for git repo https://github.com/nikhilknit/Mini-LSM written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nikhilknit/Mini-LSM on toolchain 1ef7943ee607160a564655b6596f83670ef95df5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nikhilknit/Mini-LSM 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" "+1ef7943ee607160a564655b6596f83670ef95df5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d9913378600e0cee5f93196196e465d2fef4bcde0788cda30f8d17fe7b48340
[INFO] running `Command { std: "docker" "start" "-a" "5d9913378600e0cee5f93196196e465d2fef4bcde0788cda30f8d17fe7b48340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d9913378600e0cee5f93196196e465d2fef4bcde0788cda30f8d17fe7b48340", kill_on_drop: false }`
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[INFO] [stderr]    Compiling mini-lsm-xtask v0.2.0 (/opt/rustwide/workdir/xtask)
[INFO] [stderr]    Compiling mini-lsm v0.2.0 (/opt/rustwide/workdir/mini-lsm)
[INFO] [stderr]    Compiling mini-lsm-mvcc v0.2.0 (/opt/rustwide/workdir/mini-lsm-mvcc)
[INFO] [stderr]    Compiling mini-lsm-starter v0.2.0 (/opt/rustwide/workdir/mini-lsm-starter)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> mini-lsm-starter/src/lsm_storage.rs:372:9
[INFO] [stdout]     |
[INFO] [stdout] 332 | /         loop {
[INFO] [stdout] 333 | |             // --- QUICK CHECK: read the current memtable and its size without global mutex ---
[INFO] [stdout] 334 | |             {
[INFO] [stdout] 335 | |                 let state_read = self.state.read(); // RwLock read guard for Arc<LsmStorageState>
[INFO] [stdout] ...   |
[INFO] [stdout] 370 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 371 |
[INFO] [stdout] 372 |           Ok(())
[INFO] [stdout]     |           ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> mini-lsm-starter/src/table/builder.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         mut self,
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (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]   --> mini-lsm-starter/src/block/iterator.rs:60:16
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn key(&self) -> KeySlice {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided 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] 60 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/concat_iterator.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/merge_iterator.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/key.rs:71:25
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/key.rs:94:25
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/lsm_storage.rs:377:9
[INFO] [stdout]     |
[INFO] [stdout] 377 |         self.put(_key, TOMBSTONE);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 377 |         let _ = self.put(_key, TOMBSTONE);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-starter/src/mem_table.rs:196:12
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/table/iterator.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/block/iterator.rs:77:16
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn key(&self) -> KeySlice {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided 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] 77 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-mvcc/src/iterators/concat_iterator.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/iterators/merge_iterator.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/key.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-mvcc/src/key.rs:119:25
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]     |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/block/iterator.rs:76:16
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn key(&self) -> KeySlice {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided 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] 76 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm/src/iterators/concat_iterator.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/iterators/merge_iterator.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/key.rs:71:25
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/key.rs:94:25
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm/src/mem_table.rs:206:12
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/table/iterator.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-mvcc/src/mem_table.rs:260:12
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/table/iterator.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "b00bd7958bc22245c50639c46e2db4a05c03f5f1be68926c11a39ff1a698fca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b00bd7958bc22245c50639c46e2db4a05c03f5f1be68926c11a39ff1a698fca0", kill_on_drop: false }`
[INFO] [stdout] b00bd7958bc22245c50639c46e2db4a05c03f5f1be68926c11a39ff1a698fca0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04729d3a527c839c45b9229ce8555e1a5220691c69208e0fccba6fe43707904e
[INFO] running `Command { std: "docker" "start" "-a" "04729d3a527c839c45b9229ce8555e1a5220691c69208e0fccba6fe43707904e", kill_on_drop: false }`
[INFO] [stderr]    Compiling fastrand v2.1.0
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> mini-lsm-starter/src/lsm_storage.rs:372:9
[INFO] [stdout]     |
[INFO] [stdout] 332 | /         loop {
[INFO] [stdout] 333 | |             // --- QUICK CHECK: read the current memtable and its size without global mutex ---
[INFO] [stdout] 334 | |             {
[INFO] [stdout] 335 | |                 let state_read = self.state.read(); // RwLock read guard for Arc<LsmStorageState>
[INFO] [stdout] ...   |
[INFO] [stdout] 370 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 371 |
[INFO] [stdout] 372 |           Ok(())
[INFO] [stdout]     |           ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> mini-lsm-starter/src/table/builder.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         mut self,
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (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]   --> mini-lsm-starter/src/block/iterator.rs:60:16
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn key(&self) -> KeySlice {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided 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] 60 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/concat_iterator.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/merge_iterator.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/key.rs:71:25
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/key.rs:94:25
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/lsm_storage.rs:377:9
[INFO] [stdout]     |
[INFO] [stdout] 377 |         self.put(_key, TOMBSTONE);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 377 |         let _ = self.put(_key, TOMBSTONE);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-starter/src/mem_table.rs:196:12
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/table/iterator.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/block/iterator.rs:77:16
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn key(&self) -> KeySlice {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided 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] 77 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-mvcc/src/iterators/concat_iterator.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/iterators/merge_iterator.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/key.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-mvcc/src/key.rs:119:25
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]     |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-mvcc/src/mem_table.rs:260:12
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/table/iterator.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/block/iterator.rs:76:16
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn key(&self) -> KeySlice {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided 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] 76 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm/src/iterators/concat_iterator.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/iterators/merge_iterator.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/key.rs:71:25
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/key.rs:94:25
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm/src/mem_table.rs:206:12
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/table/iterator.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mini-lsm-xtask v0.2.0 (/opt/rustwide/workdir/xtask)
[INFO] [stderr]    Compiling tempfile v3.10.1
[INFO] [stderr]    Compiling mini-lsm-mvcc v0.2.0 (/opt/rustwide/workdir/mini-lsm-mvcc)
[INFO] [stderr]    Compiling mini-lsm v0.2.0 (/opt/rustwide/workdir/mini-lsm)
[INFO] [stderr]    Compiling mini-lsm-starter v0.2.0 (/opt/rustwide/workdir/mini-lsm-starter)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> mini-lsm-starter/src/lsm_storage.rs:372:9
[INFO] [stdout]     |
[INFO] [stdout] 332 | /         loop {
[INFO] [stdout] 333 | |             // --- QUICK CHECK: read the current memtable and its size without global mutex ---
[INFO] [stdout] 334 | |             {
[INFO] [stdout] 335 | |                 let state_read = self.state.read(); // RwLock read guard for Arc<LsmStorageState>
[INFO] [stdout] ...   |
[INFO] [stdout] 370 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 371 |
[INFO] [stdout] 372 |           Ok(())
[INFO] [stdout]     |           ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> mini-lsm-starter/src/table/builder.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         mut self,
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (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]   --> mini-lsm-starter/src/block/iterator.rs:60:16
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn key(&self) -> KeySlice {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided 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] 60 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/concat_iterator.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/iterators/merge_iterator.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/key.rs:71:25
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/key.rs:94:25
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> mini-lsm-starter/src/lsm_storage.rs:377:9
[INFO] [stdout]     |
[INFO] [stdout] 377 |         self.put(_key, TOMBSTONE);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 377 |         let _ = self.put(_key, TOMBSTONE);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-starter/src/mem_table.rs:196:12
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/table/iterator.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-starter/src/tests/harness.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/block/iterator.rs:76:16
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn key(&self) -> KeySlice {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided 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] 76 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm/src/iterators/concat_iterator.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/iterators/merge_iterator.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/key.rs:71:25
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/key.rs:94:25
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm/src/mem_table.rs:206:12
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/table/iterator.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm/src/tests/harness.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/block/iterator.rs:77:16
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn key(&self) -> KeySlice {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided 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] 77 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-mvcc/src/iterators/concat_iterator.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/iterators/merge_iterator.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/key.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-mvcc/src/key.rs:119:25
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stdout]     |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> mini-lsm-mvcc/src/mem_table.rs:260:12
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn key(&self) -> KeySlice {
[INFO] [stdout]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |            |
[INFO] [stdout]     |            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]     |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/table/iterator.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> mini-lsm-mvcc/src/tests/harness.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn key(&self) -> KeySlice {
[INFO] [stdout]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |            |
[INFO] [stdout]    |            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 18.96s
[INFO] running `Command { std: "docker" "inspect" "04729d3a527c839c45b9229ce8555e1a5220691c69208e0fccba6fe43707904e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04729d3a527c839c45b9229ce8555e1a5220691c69208e0fccba6fe43707904e", kill_on_drop: false }`
[INFO] [stdout] 04729d3a527c839c45b9229ce8555e1a5220691c69208e0fccba6fe43707904e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 56d4be9ea8bcc7753c3e66958afb0d32d7b933e3fd1241065db76349c9699f8e
[INFO] running `Command { std: "docker" "start" "-a" "56d4be9ea8bcc7753c3e66958afb0d32d7b933e3fd1241065db76349c9699f8e", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> mini-lsm-starter/src/lsm_storage.rs:372:9
[INFO] [stderr]     |
[INFO] [stderr] 332 | /         loop {
[INFO] [stderr] 333 | |             // --- QUICK CHECK: read the current memtable and its size without global mutex ---
[INFO] [stderr] 334 | |             {
[INFO] [stderr] 335 | |                 let state_read = self.state.read(); // RwLock read guard for Arc<LsmStorageState>
[INFO] [stderr] ...   |
[INFO] [stderr] 370 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 371 |
[INFO] [stderr] 372 |           Ok(())
[INFO] [stderr]     |           ^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> mini-lsm-starter/src/table/builder.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         mut self,
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-starter/src/block/iterator.rs:60:16
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn key(&self) -> KeySlice {
[INFO] [stderr]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                |
[INFO] [stderr]    |                the lifetime is elided 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] 60 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                                  ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-starter/src/iterators/concat_iterator.rs:49:12
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn key(&self) -> KeySlice {
[INFO] [stderr]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |            |
[INFO] [stderr]    |            the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-starter/src/iterators/merge_iterator.rs:71:12
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn key(&self) -> KeySlice {
[INFO] [stderr]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |            |
[INFO] [stderr]    |            the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-starter/src/key.rs:71:25
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stderr]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                                           ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-starter/src/key.rs:94:25
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stderr]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                                           ++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> mini-lsm-starter/src/lsm_storage.rs:377:9
[INFO] [stderr]     |
[INFO] [stderr] 377 |         self.put(_key, TOMBSTONE);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 377 |         let _ = self.put(_key, TOMBSTONE);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> mini-lsm-starter/src/mem_table.rs:196:12
[INFO] [stderr]     |
[INFO] [stderr] 196 |     fn key(&self) -> KeySlice {
[INFO] [stderr]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |            |
[INFO] [stderr]     |            the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 196 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]     |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-starter/src/table/iterator.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn key(&self) -> KeySlice {
[INFO] [stderr]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |            |
[INFO] [stderr]    |            the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `mini-lsm-starter` (lib) generated 10 warnings (run `cargo fix --lib -p mini-lsm-starter` to apply 8 suggestions)
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm/src/block/iterator.rs:76:16
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn key(&self) -> KeySlice {
[INFO] [stderr]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                |
[INFO] [stderr]    |                the lifetime is elided 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] 76 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                                  ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> mini-lsm/src/iterators/concat_iterator.rs:111:12
[INFO] [stderr]     |
[INFO] [stderr] 111 |     fn key(&self) -> KeySlice {
[INFO] [stderr]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |            |
[INFO] [stderr]     |            the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 111 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]     |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm/src/iterators/merge_iterator.rs:97:12
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn key(&self) -> KeySlice {
[INFO] [stderr]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |            |
[INFO] [stderr]    |            the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm/src/key.rs:71:25
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stderr]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                                           ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm/src/key.rs:94:25
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stderr]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                                           ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> mini-lsm/src/mem_table.rs:206:12
[INFO] [stderr]     |
[INFO] [stderr] 206 |     fn key(&self) -> KeySlice {
[INFO] [stderr]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |            |
[INFO] [stderr]     |            the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 206 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]     |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm/src/table/iterator.rs:99:12
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn key(&self) -> KeySlice {
[INFO] [stderr]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |            |
[INFO] [stderr]    |            the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-mvcc/src/block/iterator.rs:77:16
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub fn key(&self) -> KeySlice {
[INFO] [stderr]    |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                |
[INFO] [stderr]    |                the lifetime is elided 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] 77 |     pub fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                                  ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> mini-lsm-mvcc/src/iterators/concat_iterator.rs:111:12
[INFO] [stderr]     |
[INFO] [stderr] 111 |     fn key(&self) -> KeySlice {
[INFO] [stderr]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |            |
[INFO] [stderr]     |            the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 111 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]     |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-mvcc/src/iterators/merge_iterator.rs:97:12
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn key(&self) -> KeySlice {
[INFO] [stderr]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |            |
[INFO] [stderr]    |            the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-mvcc/src/key.rs:89:25
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stderr]    |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                                           ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> mini-lsm-mvcc/src/key.rs:119:25
[INFO] [stderr]     |
[INFO] [stderr] 119 |     pub fn as_key_slice(&self) -> KeySlice {
[INFO] [stderr]     |                         ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 119 |     pub fn as_key_slice(&self) -> KeySlice<'_> {
[INFO] [stderr]     |                                           ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> mini-lsm-mvcc/src/mem_table.rs:260:12
[INFO] [stderr]     |
[INFO] [stderr] 260 |     fn key(&self) -> KeySlice {
[INFO] [stderr]     |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |            |
[INFO] [stderr]     |            the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 260 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]     |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-mvcc/src/table/iterator.rs:99:12
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn key(&self) -> KeySlice {
[INFO] [stderr]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |            |
[INFO] [stderr]    |            the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `mini-lsm` (lib) generated 7 warnings (run `cargo fix --lib -p mini-lsm` to apply 7 suggestions)
[INFO] [stderr] warning: `mini-lsm-mvcc` (lib) generated 7 warnings (run `cargo fix --lib -p mini-lsm-mvcc` to apply 7 suggestions)
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm/src/tests/harness.rs:76:12
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn key(&self) -> KeySlice {
[INFO] [stderr]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |            |
[INFO] [stderr]    |            the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-mvcc/src/tests/harness.rs:76:12
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn key(&self) -> KeySlice {
[INFO] [stderr]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |            |
[INFO] [stderr]    |            the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> mini-lsm-starter/src/tests/harness.rs:76:12
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn key(&self) -> KeySlice {
[INFO] [stderr]    |            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |            |
[INFO] [stderr]    |            the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn key(&self) -> KeySlice<'_> {
[INFO] [stderr]    |                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `mini-lsm` (lib test) generated 8 warnings (7 duplicates) (run `cargo fix --lib -p mini-lsm --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `mini-lsm-mvcc` (lib test) generated 8 warnings (7 duplicates) (run `cargo fix --lib -p mini-lsm-mvcc --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `mini-lsm-starter` (lib test) generated 11 warnings (10 duplicates) (run `cargo fix --lib -p mini-lsm-starter --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mini_lsm-b3a73fd188f5ab94)
[INFO] [stdout] 
[INFO] [stdout] running 56 tests
[INFO] [stdout] test tests::week1_day1::test_task1_memtable_overwrite ... ok
[INFO] [stdout] test tests::week1_day2::test_task1_empty_memtable_iter ... ok
[INFO] [stdout] test tests::week1_day2::test_task1_memtable_iter ... ok
[INFO] [stdout] test tests::week1_day2::test_task2_merge_2 ... ok
[INFO] [stdout] test tests::week1_day2::test_task2_merge_empty ... ok
[INFO] [stdout] test tests::week1_day2::test_task2_merge_error ... ok
[INFO] [stdout] test tests::week1_day2::test_task3_fused_iterator ... ok
[INFO] [stdout] test tests::week1_day3::test_block_build_all ... ok
[INFO] [stdout] test tests::week1_day3::test_block_build_full ... ok
[INFO] [stdout] test tests::week1_day3::test_block_build_large_1 ... ok
[INFO] [stdout] test tests::week1_day1::test_task3_storage_integration ... ok
[INFO] [stdout] test tests::week1_day1::test_task2_storage_integration ... ok
[INFO] [stdout] test tests::week1_day1::test_task4_storage_integration ... ok
[INFO] [stdout] test tests::week1_day2::test_task2_merge_1 ... ok
[INFO] [stdout] test tests::week1_day1::test_task1_memtable_get ... ok
[INFO] [stdout] test tests::week1_day2::test_task4_integration ... ok
[INFO] [stdout] test tests::week1_day3::test_block_build_single_key ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_build_single_key ... ok
[INFO] [stdout] test tests::week1_day1::test_task3_freeze_on_capacity ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_build_two_blocks ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_decode ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_iterator ... ok
[INFO] [stdout] test tests::week1_day5::test_task1_merge_1 ... ok
[INFO] [stdout] test tests::week1_day5::test_task1_merge_2 ... ok
[INFO] [stdout] test tests::week1_day5::test_task1_merge_3 ... ok
[INFO] [stdout] test tests::week1_day5::test_task1_merge_4 ... ok
[INFO] [stdout] test tests::week1_day5::test_task1_merge_5 ... ok
[INFO] [stdout] test tests::week1_day5::test_task2_storage_scan ... ok
[INFO] [stdout] test tests::week1_day5::test_task3_storage_get ... ok
[INFO] [stdout] test tests::week1_day3::test_block_build_large_2 ... ok
[INFO] [stdout] test tests::week1_day3::test_block_decode ... ok
[INFO] [stdout] test tests::week1_day3::test_block_encode ... ok
[INFO] [stdout] test tests::week1_day3::test_block_iterator ... ok
[INFO] [stdout] test tests::week1_day3::test_block_seek_key ... ok
[INFO] [stdout] test tests::week1_day7::test_task1_bloom_filter ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_build_all ... ok
[INFO] [stdout] test tests::week1_day7::test_task2_sst_decode ... ok
[INFO] [stdout] test tests::week1_day7::test_task3_block_key_compression ... ok
[INFO] [stdout] test tests::week1_day6::test_task1_storage_get ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_seek_key ... ok
[INFO] [stdout] test tests::week2_day1::test_task2_concat_iterator ... ok
[INFO] [stdout] test tests::week1_day6::test_task1_storage_scan ... ok
[INFO] [stdout] test tests::week2_day1::test_task3_integration ... ok
[INFO] [stdout] test tests::week2_day1::test_task1_full_compaction ... ok
[INFO] [stdout] test tests::week2_day5::test_integration_leveled ... ok
[INFO] [stdout] test tests::week1_day6::test_task3_sst_filter ... ok
[INFO] [stdout] test tests::week2_day5::test_integration_tiered ... ok
[INFO] [stdout] test tests::week2_day5::test_integration_simple ... ok
[INFO] [stdout] test tests::week2_day6::test_integration_leveled ... ok
[INFO] [stdout] test tests::week2_day6::test_integration_simple ... ok
[INFO] [stdout] test tests::week2_day6::test_integration_tiered ... ok
[INFO] [stdout] test tests::week1_day6::test_task2_auto_flush ... ok
[INFO] [stdout] test tests::week2_day5::test_multiple_compacted_ssts_leveled ... ok
[INFO] [stdout] test tests::week2_day3::test_integration ... ok
[INFO] [stdout] test tests::week2_day2::test_integration ... ok
[INFO] [stdout] test tests::week2_day4::test_integration ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 56 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 22.91s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/compaction-simulator.rs (/opt/rustwide/target/debug/deps/compaction_simulator_ref-ce806627d116f272)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/bin/mini-lsm-cli.rs (/opt/rustwide/target/debug/deps/mini_lsm_cli_ref-6a4bd04d0e93c9a7)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/wrapper.rs (/opt/rustwide/target/debug/deps/mini_lsm_wrapper_ref-fb5bd384c70fe1c6)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mini_lsm_mvcc-3078ebbeb84f10f8)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 72 tests
[INFO] [stdout] test tests::week1_day1::test_task1_memtable_get ... ok
[INFO] [stdout] test tests::week1_day1::test_task1_memtable_overwrite ... ok
[INFO] [stdout] test tests::week1_day2::test_task1_empty_memtable_iter ... ok
[INFO] [stdout] test tests::week1_day2::test_task2_merge_empty ... ok
[INFO] [stdout] test tests::week1_day2::test_task2_merge_1 ... ok
[INFO] [stdout] test tests::week1_day2::test_task2_merge_2 ... ok
[INFO] [stdout] test tests::week1_day2::test_task2_merge_error ... ok
[INFO] [stdout] test tests::week1_day2::test_task1_memtable_iter ... ok
[INFO] [stdout] test tests::week1_day2::test_task3_fused_iterator ... ok
[INFO] [stdout] test tests::week1_day3::test_block_build_large_1 ... ok
[INFO] [stdout] test tests::week1_day3::test_block_build_large_2 ... ok
[INFO] [stdout] test tests::week1_day3::test_block_build_full ... ok
[INFO] [stdout] test tests::week1_day1::test_task2_storage_integration ... ok
[INFO] [stdout] test tests::week1_day3::test_block_build_single_key ... ok
[INFO] [stdout] test tests::week1_day3::test_block_decode ... ok
[INFO] [stdout] test tests::week1_day3::test_block_build_all ... ok
[INFO] [stdout] test tests::week1_day3::test_block_iterator ... ok
[INFO] [stdout] test tests::week1_day3::test_block_seek_key ... ok
[INFO] [stdout] test tests::week1_day3::test_block_encode ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_build_single_key ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_build_two_blocks ... ok
[INFO] [stdout] test tests::week1_day1::test_task4_storage_integration ... ok
[INFO] [stdout] test tests::week1_day1::test_task3_storage_integration ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_decode ... ok
[INFO] [stdout] test tests::week1_day5::test_task1_merge_1 ... ok
[INFO] [stdout] test tests::week1_day5::test_task1_merge_2 ... ok
[INFO] [stdout] test tests::week1_day5::test_task1_merge_3 ... ok
[INFO] [stdout] test tests::week1_day2::test_task4_integration ... ok
[INFO] [stdout] test tests::week1_day5::test_task1_merge_4 ... ok
[INFO] [stdout] test tests::week1_day5::test_task1_merge_5 ... ok
[INFO] [stdout] test tests::week1_day5::test_task2_storage_scan ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_iterator ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_build_all ... ok
[INFO] [stdout] test tests::week1_day5::test_task3_storage_get ... ok
[INFO] [stdout] test tests::week1_day7::test_task1_bloom_filter ... ok
[INFO] [stdout] test tests::week1_day4::test_sst_seek_key ... ok
[INFO] [stdout] test tests::week1_day7::test_task3_block_key_compression ... ok
[INFO] [stdout] test tests::week1_day7::test_task2_sst_decode ... ok
[INFO] [stdout] test tests::week1_day6::test_task1_storage_scan ... ok
[INFO] [stdout] test tests::week1_day6::test_task1_storage_get ... ok
[INFO] [stdout] test tests::week2_day1::test_task2_concat_iterator ... ok
[INFO] [stdout] test tests::week1_day1::test_task3_freeze_on_capacity ... ok
[INFO] [stdout] test tests::week2_day1::test_task3_integration ... ok
[INFO] [stdout] test tests::week2_day1::test_task1_full_compaction ... ok
[INFO] [stdout] test tests::week2_day5::test_integration_leveled ... ok
[INFO] [stdout] test tests::week1_day6::test_task3_sst_filter ... ok
[INFO] [stdout] test tests::week2_day5::test_integration_simple ... ok
[INFO] [stdout] test tests::week2_day5::test_integration_tiered ... ok
[INFO] [stdout] test tests::week2_day6::test_integration_leveled ... ok
[INFO] [stdout] test tests::week3_day1::test_sst_build_multi_version_hard ... ok
[INFO] [stdout] test tests::week3_day1::test_sst_build_multi_version_simple ... ok
[INFO] [stdout] test tests::week2_day6::test_integration_tiered ... ok
[INFO] [stdout] test tests::week3_day3::test_task2_lsm_iterator_mvcc ... ok
[INFO] [stdout] test tests::week2_day6::test_integration_simple ... ok
[INFO] [stdout] test tests::week3_day3::test_task3_sst_ts ... ok
[INFO] [stdout] test tests::week3_day4::test_task1_watermark ... ok
[INFO] [stdout] test tests::week3_day3::test_task2_memtable_mvcc ... ok
[INFO] [stdout] test tests::week3_day4::test_task2_snapshot_watermark ... ok
[INFO] [stdout] test tests::week3_day5::test_txn_integration ... ok
[INFO] [stdout] test tests::week3_day6::test_serializable_1 ... ok
[INFO] [stdout] test tests::week3_day6::test_serializable_2 ... ok
[INFO] [stdout] test tests::week3_day6::test_serializable_3_ts_range ... ok
[INFO] [stdout] test tests::week3_day6::test_serializable_4_scan ... ok
[INFO] [stdout] test tests::week3_day6::test_serializable_5_read_only ... ok
[INFO] [stdout] test tests::week3_day4::test_task3_mvcc_compaction ... ok
[INFO] [stdout] test tests::week3_day7::test_task3_mvcc_compaction ... ok
[INFO] [stdout] test tests::week1_day6::test_task2_auto_flush ... FAILED
[INFO] [stdout] test tests::week2_day2::test_integration ... ok
[INFO] [stdout] test tests::week2_day5::test_multiple_compacted_ssts_leveled ... ok
[INFO] [stdout] test tests::week2_day4::test_integration ... ok
[INFO] [stdout] test tests::week2_day3::test_integration ... ok
[INFO] [stdout] test tests::week3_day2::test_task3_compaction_integration ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::week1_day6::test_task2_auto_flush stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::week1_day6::test_task2_auto_flush' (190) panicked at mini-lsm-mvcc/src/tests/week1_day6.rs:150:5:
[INFO] [stdout] assertion failed: !storage.inner.state.read().l0_sstables.is_empty()
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5ece48266662 - std::backtrace_rs::backtrace::libunwind::trace::h786de35fecf3582f
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5ece48266662 - std::backtrace_rs::backtrace::trace_unsynchronized::h4a7da1a2a64387f1
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5ece48266662 - std::sys::backtrace::_print_fmt::h6bd7d500070c788c
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5ece48266662 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h6d82c1afff976903
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5ece4827766f - core::fmt::rt::Argument::fmt::hc4ce6d643d397690
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5ece4827766f - core::fmt::write::hb1e7ca88b6a3936e
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x5ece48231463 - std::io::default_write_fmt::haffd49d96f1984a8
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5ece48231463 - std::io::Write::write_fmt::h027871c57cf57c01
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5ece4823df82 - std::sys::backtrace::BacktraceLock::print::ha2430613ee79d059
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5ece482439ef - std::panicking::default_hook::{{closure}}::hdbd2db9e5c303cf6
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5ece48243881 - std::panicking::default_hook::hed93c70cba5fdcf0
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x5ece481ba16e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd0ee8b569efc6a07
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x5ece481ba16e - test::test_main_with_exit_callback::{{closure}}::hf10864b576ecd15d
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5ece482440af - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3a55ca34534c0d00
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x5ece482440af - std::panicking::panic_with_hook::h3862d766c2cec19b
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x5ece48243e26 - std::panicking::panic_handler::{{closure}}::hb95eb402b5e28ee1
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:700:13
[INFO] [stdout]   16:     0x5ece4823e0c9 - std::sys::backtrace::__rust_end_short_backtrace::hf73a26dc1835d85a
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5ece4822540d - __rustc[6ed5915ee467787]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x5ece4827f590 - core::panicking::panic_fmt::h3454303eb8e6f7cd
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5ece4827f56c - core::panicking::panic::hb290d809a6d6b140
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x5ece4810fb3f - mini_lsm_mvcc::tests::week1_day6::test_task2_auto_flush::h8528eb12e0af5e42
[INFO] [stdout]                                at /opt/rustwide/workdir/mini-lsm-mvcc/src/tests/week1_day6.rs:150:5
[INFO] [stdout]   21:     0x5ece4810fd97 - mini_lsm_mvcc::tests::week1_day6::test_task2_auto_flush::{{closure}}::h98de463d1bcb6bb0
[INFO] [stdout]                                at /opt/rustwide/workdir/mini-lsm-mvcc/src/tests/week1_day6.rs:135:27
[INFO] [stdout]   22:     0x5ece4801bed6 - core::ops::function::FnOnce::call_once::hbdac631a178b8d41
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5ece481b9f4b - core::ops::function::FnOnce::call_once::ha729ee35d2fab541
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5ece481b9f4b - test::__rust_begin_short_backtrace::ha40f4db8207e1111
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:663:18
[INFO] [stdout]   25:     0x5ece481cdfcd - test::run_test_in_process::{{closure}}::hc1b77cda5d44f0f3
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:686:74
[INFO] [stdout]   26:     0x5ece481cdfcd - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h1dbea1de64785521
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27:     0x5ece481cdfcd - std::panicking::catch_unwind::do_call::hd5febe9affd5a1b3
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:590:40
[INFO] [stdout]   28:     0x5ece481cdfcd - std::panicking::catch_unwind::h51ea89627559b6f4
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:553:19
[INFO] [stdout]   29:     0x5ece481cdfcd - std::panic::catch_unwind::hb8b8c2367cae3d66
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x5ece481cdfcd - test::run_test_in_process::ha5b55801407ea100
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:686:27
[INFO] [stdout]   31:     0x5ece481cdfcd - test::run_test::{{closure}}::h0b9d4072b527abf5
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:607:43
[INFO] [stdout]   32:     0x5ece481a74e4 - test::run_test::{{closure}}::hb1056b5731205822
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:637:41
[INFO] [stdout]   33:     0x5ece481a74e4 - std::sys::backtrace::__rust_begin_short_backtrace::hb61ff5a34023c7ef
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   34:     0x5ece481aae1a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hb0a83c0e8b353cff
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   35:     0x5ece481aae1a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb4f32cb008535298
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x5ece481aae1a - std::panicking::catch_unwind::do_call::h16d110e4fc35789a
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:590:40
[INFO] [stdout]   37:     0x5ece481aae1a - std::panicking::catch_unwind::hea9118f355699c4b
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:553:19
[INFO] [stdout]   38:     0x5ece481aae1a - std::panic::catch_unwind::hf4b3c2a06d3f42f5
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x5ece481aae1a - std::thread::Builder::spawn_unchecked_::{{closure}}::h3f4cb733a52d53d5
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   40:     0x5ece481aae1a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4052f0967b37caeb
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5ece482394bf - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7ec433abd3f148b4
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   42:     0x5ece482394bf - std::sys::thread::unix::Thread::new::thread_start::he514622d3d7ba65c
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   43:     0x767e92347aa4 - <unknown>
[INFO] [stdout]   44:     0x767e923d4a64 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::week1_day6::test_task2_auto_flush
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 71 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 27.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `-p mini-lsm-mvcc --lib`
[INFO] running `Command { std: "docker" "inspect" "56d4be9ea8bcc7753c3e66958afb0d32d7b933e3fd1241065db76349c9699f8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56d4be9ea8bcc7753c3e66958afb0d32d7b933e3fd1241065db76349c9699f8e", kill_on_drop: false }`
[INFO] [stdout] 56d4be9ea8bcc7753c3e66958afb0d32d7b933e3fd1241065db76349c9699f8e
