[INFO] updating cached repository gfreezy/lsm-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gfreezy/lsm-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gfreezy/lsm-rs" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/gfreezy/lsm-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/gfreezy/lsm-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gfreezy/lsm-rs" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/gfreezy/lsm-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/gfreezy/lsm-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8e0118a1006bebf59b91cf3ce4d8f0e86949a240
[INFO] sha for GitHub repo gfreezy/lsm-rs: 8e0118a1006bebf59b91cf3ce4d8f0e86949a240
[INFO] validating manifest of gfreezy/lsm-rs on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gfreezy/lsm-rs on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gfreezy/lsm-rs
[INFO] finished frobbing gfreezy/lsm-rs
[INFO] frobbed toml for gfreezy/lsm-rs written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/gfreezy/lsm-rs/Cargo.toml
[INFO] started frobbing gfreezy/lsm-rs
[INFO] finished frobbing gfreezy/lsm-rs
[INFO] frobbed toml for gfreezy/lsm-rs written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/gfreezy/lsm-rs/Cargo.toml
[INFO] crate gfreezy/lsm-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking gfreezy/lsm-rs against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-5/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/gfreezy/lsm-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ae0cbef51d54c38d9c3aa350e9c26cf9c4aaaf69d64287bab7a66a17a60eb98a
[INFO] running `"docker" "start" "-a" "ae0cbef51d54c38d9c3aa350e9c26cf9c4aaaf69d64287bab7a66a17a60eb98a"`
[INFO] [stderr]     Checking spectral v0.6.0
[INFO] [stderr]     Checking lsm-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `RECORD_EXTRA_SIZE`
[INFO] [stderr]  --> src/block.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | const RECORD_EXTRA_SIZE: usize = 7; // 7 bytes
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Full`
[INFO] [stderr]   --> src/block.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Full = 1,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `First`
[INFO] [stderr]   --> src/block.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     First = 2,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Middle`
[INFO] [stderr]   --> src/block.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Middle = 3,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Last`
[INFO] [stderr]   --> src/block.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Last = 4,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/block.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn new(typ: Type, data: &'a [u8]) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_to`
[INFO] [stderr]   --> src/block.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn write_to<W: WriteBytesExt>(&self, writer: &mut W) -> io::Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `compute_checksum`
[INFO] [stderr]   --> src/block.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn compute_checksum(typ: Type, data: &[u8]) -> u32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_records_from_buf`
[INFO] [stderr]   --> src/block.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn make_records_from_buf(free_block_size: usize, buf: &[u8]) -> Vec<Record> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AvailableSpace`
[INFO] [stderr]  --> src/memtable.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     AvailableSpace,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ThresholdReached`
[INFO] [stderr]   --> src/memtable.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     ThresholdReached,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/memtable.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn new(max_size: usize) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]   --> src/memtable.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn set(&mut self, key: Key, value: Value) -> Fallible<SetRet> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/memtable.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn get(&self, key: &[u8]) -> Option<Value> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/memtable.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn remove(&mut self, key: Key) -> Fallible<SetRet> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_threshold_reached`
[INFO] [stderr]   --> src/memtable.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn is_threshold_reached(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/memtable.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn get(&self, key: &[u8]) -> Option<&Value> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/memtable.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub fn iter(&self) -> impl Iterator<Item = (&Key, &Value)> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SSTable`
[INFO] [stderr]  --> src/sstable.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct SSTable {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TOMBSTONE`
[INFO] [stderr]  --> src/types.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub const TOMBSTONE: &[u8] = &[0x6b, 0xe5, 0xa5, 0xa2];
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `WAL_LOG_MAX_SIZE`
[INFO] [stderr]  --> src/types.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub const WAL_LOG_MAX_SIZE: usize = 4 * 1024 * 1024;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `BLOCK_MAX_SIZE`
[INFO] [stderr]  --> src/types.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub const BLOCK_MAX_SIZE: usize = 32 * 1024; // 32KB
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `BLOCK_MIN_FREE_SIZE`
[INFO] [stderr]  --> src/types.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub const BLOCK_MIN_FREE_SIZE: usize = 6; // 6 bytes
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Wal`
[INFO] [stderr]   --> src/wal.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct Wal {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/wal.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn new<P: AsRef<Path>>(path: P) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `make_records`
[INFO] [stderr]   --> src/wal.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn make_records<'a>(&self, buf: &'a [u8]) -> Vec<Record<'a>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_records`
[INFO] [stderr]   --> src/wal.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn write_records<'a>(&mut self, records: Vec<Record<'a>>) -> Fallible<Vec<Record<'a>>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_record`
[INFO] [stderr]   --> src/wal.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn write_record(&mut self, record: &Record) -> io::Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_block`
[INFO] [stderr]   --> src/wal.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     fn new_block(&mut self) -> io::Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_trailer`
[INFO] [stderr]   --> src/wal.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn write_trailer(&mut self) -> io::Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `free_space`
[INFO] [stderr]   --> src/wal.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn free_space(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `current_block_free_space`
[INFO] [stderr]   --> src/wal.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn current_block_free_space(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SSTable`
[INFO] [stderr]  --> src/sstable.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct SSTable {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `path`
[INFO] [stderr]   --> src/wal.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     path: PathBuf,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.03s
[INFO] running `"docker" "inspect" "ae0cbef51d54c38d9c3aa350e9c26cf9c4aaaf69d64287bab7a66a17a60eb98a"`
[INFO] running `"docker" "rm" "-f" "ae0cbef51d54c38d9c3aa350e9c26cf9c4aaaf69d64287bab7a66a17a60eb98a"`
[INFO] [stdout] ae0cbef51d54c38d9c3aa350e9c26cf9c4aaaf69d64287bab7a66a17a60eb98a