[INFO] cloning repository https://github.com/DAlperin/tiny-lsm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DAlperin/tiny-lsm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDAlperin%2Ftiny-lsm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDAlperin%2Ftiny-lsm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8bd66b239d9866ee2cd0fee89504da55ee807b85
[INFO] checking DAlperin/tiny-lsm against master#f57eac1bf98cb5d578e3364b64365ec398c137df for require-direct
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDAlperin%2Ftiny-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] started tweaking git repo https://github.com/DAlperin/tiny-lsm
[INFO] finished tweaking git repo https://github.com/DAlperin/tiny-lsm
[INFO] tweaked toml for git repo https://github.com/DAlperin/tiny-lsm written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DAlperin/tiny-lsm on toolchain f57eac1bf98cb5d578e3364b64365ec398c137df
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f57eac1bf98cb5d578e3364b64365ec398c137df" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/DAlperin/tiny-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" "+f57eac1bf98cb5d578e3364b64365ec398c137df" "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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+f57eac1bf98cb5d578e3364b64365ec398c137df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8853f0365f4f147df738e04e3099c091cbba39472c8a44d39f76c2f166f509de
[INFO] running `Command { std: "docker" "start" "-a" "8853f0365f4f147df738e04e3099c091cbba39472c8a44d39f76c2f166f509de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8853f0365f4f147df738e04e3099c091cbba39472c8a44d39f76c2f166f509de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8853f0365f4f147df738e04e3099c091cbba39472c8a44d39f76c2f166f509de", kill_on_drop: false }`
[INFO] [stdout] 8853f0365f4f147df738e04e3099c091cbba39472c8a44d39f76c2f166f509de
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+f57eac1bf98cb5d578e3364b64365ec398c137df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e49122522608fa3c2d0d0fc2f8cbda07ca908922c172491d931131f22a402c21
[INFO] running `Command { std: "docker" "start" "-a" "e49122522608fa3c2d0d0fc2f8cbda07ca908922c172491d931131f22a402c21", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
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[INFO] [stderr]     Checking once_cell v1.21.3
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[INFO] [stdout] warning: unused variable: `existing`
[INFO] [stdout]   --> src/lsm.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     existing: Vec<(Vec<u8>, Vec<u8>)>,
[INFO] [stdout]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_existing`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_data`
[INFO] [stdout]   --> src/lsm.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     new_data: Vec<(Vec<u8>, Vec<u8>)>,
[INFO] [stdout]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lsm.rs:35:30
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn insert(&mut self, key: Vec<u8>, value: Vec<u8>) {
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/lsm.rs:35:44
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn insert(&mut self, key: Vec<u8>, value: Vec<u8>) {
[INFO] [stdout]    |                                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lsm.rs:43:23
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn get(&self, key: &[u8]) -> Option<Vec<u8>> {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_sorted` is never used
[INFO] [stdout]   --> src/lsm.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn merge_sorted(
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `flush_memtable`, `merge_into_level`, `scan`, and `memtable_len` are never used
[INFO] [stdout]    --> src/lsm.rs:50:8
[INFO] [stdout]     |
[INFO] [stdout]  22 | impl LsmTree {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  50 |     fn flush_memtable(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  58 |     fn merge_into_level(&mut self, level: usize, new_data: Vec<(Vec<u8>, Vec<u8>)>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  90 |     pub fn scan<'a, 'b: 'a>(
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub fn memtable_len(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compute_stats` is never used
[INFO] [stdout]    --> src/lsm.rs:266:4
[INFO] [stdout]     |
[INFO] [stdout] 266 | fn compute_stats(data: &[(Vec<u8>, Vec<u8>)]) -> LevelStats {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HeapMergeItem` is never constructed
[INFO] [stdout]    --> src/lsm.rs:286:8
[INFO] [stdout]     |
[INFO] [stdout] 286 | struct HeapMergeItem<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ScanIterator` is never constructed
[INFO] [stdout]    --> src/lsm.rs:313:8
[INFO] [stdout]     |
[INFO] [stdout] 313 | struct ScanIterator<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lsm.rs:320:8
[INFO] [stdout]     |
[INFO] [stdout] 319 | impl<'a> ScanIterator<'a> {
[INFO] [stdout]     | ------------------------- associated function in this implementation
[INFO] [stdout] 320 |     fn new(mut iterators: Vec<Box<dyn Iterator<Item = (&'a [u8], &'a [u8])> + 'a>>) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `existing`
[INFO] [stdout]   --> src/lsm.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     existing: Vec<(Vec<u8>, Vec<u8>)>,
[INFO] [stdout]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_existing`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_data`
[INFO] [stdout]   --> src/lsm.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     new_data: Vec<(Vec<u8>, Vec<u8>)>,
[INFO] [stdout]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lsm.rs:35:30
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn insert(&mut self, key: Vec<u8>, value: Vec<u8>) {
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/lsm.rs:35:44
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn insert(&mut self, key: Vec<u8>, value: Vec<u8>) {
[INFO] [stdout]    |                                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lsm.rs:43:23
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn get(&self, key: &[u8]) -> Option<Vec<u8>> {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `flush_memtable` and `merge_into_level` are never used
[INFO] [stdout]   --> src/lsm.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl LsmTree {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn flush_memtable(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn merge_into_level(&mut self, level: usize, new_data: Vec<(Vec<u8>, Vec<u8>)>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 56s
[INFO] running `Command { std: "docker" "inspect" "e49122522608fa3c2d0d0fc2f8cbda07ca908922c172491d931131f22a402c21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e49122522608fa3c2d0d0fc2f8cbda07ca908922c172491d931131f22a402c21", kill_on_drop: false }`
[INFO] [stdout] e49122522608fa3c2d0d0fc2f8cbda07ca908922c172491d931131f22a402c21
