[INFO] cloning repository https://github.com/cfeitong/cft-leveldb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cfeitong/cft-leveldb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfeitong%2Fcft-leveldb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfeitong%2Fcft-leveldb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5b12beb7bf39b6692392c99e9a4cc2f92bd8e7b
[INFO] checking cfeitong/cft-leveldb against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfeitong%2Fcft-leveldb" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cfeitong/cft-leveldb on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cfeitong/cft-leveldb
[INFO] finished tweaking git repo https://github.com/cfeitong/cft-leveldb
[INFO] tweaked toml for git repo https://github.com/cfeitong/cft-leveldb written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/cfeitong/cft-leveldb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mimalloc v0.1.24
[INFO] [stderr]   Downloaded tracing-attributes v0.1.12
[INFO] [stderr]   Downloaded memmap2 v0.2.1
[INFO] [stderr]   Downloaded libmimalloc-sys v0.1.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8f5be2fe9585503830e3492a242790ad19ea5934d4d857daa59761434b8d7520
[INFO] running `Command { std: "docker" "start" "-a" "8f5be2fe9585503830e3492a242790ad19ea5934d4d857daa59761434b8d7520", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f5be2fe9585503830e3492a242790ad19ea5934d4d857daa59761434b8d7520", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f5be2fe9585503830e3492a242790ad19ea5934d4d857daa59761434b8d7520", kill_on_drop: false }`
[INFO] [stdout] 8f5be2fe9585503830e3492a242790ad19ea5934d4d857daa59761434b8d7520
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2f949085d50fbb3acd86c1e493f069c1c473a025b1391ab19f0c866d5ee594d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e2f949085d50fbb3acd86c1e493f069c1c473a025b1391ab19f0c866d5ee594d", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.20
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking memmap2 v0.2.1
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking mimalloc v0.1.24
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling tracing-attributes v0.1.12
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]     Checking tracing v0.1.23
[INFO] [stderr]     Checking cft-db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> src/encoding.rs:9:34
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn put_var_u32_le(&mut self, n: u32) {
[INFO] [stdout]   |                                  ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/encoding.rs:13:34
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn put_var_u64_le(&mut self, n: u64) {
[INFO] [stdout]    |                                  ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> src/encoding.rs:9:34
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn put_var_u32_le(&mut self, n: u32) {
[INFO] [stdout]   |                                  ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/encoding.rs:13:34
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn put_var_u64_le(&mut self, n: u64) {
[INFO] [stdout]    |                                  ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains`
[INFO] [stdout]   --> src/mem_table.rs:32:18
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub async fn contains(&self, key: &Bytes) -> bool {
[INFO] [stdout]    |                  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove`
[INFO] [stdout]   --> src/mem_table.rs:37:18
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub async fn remove(&self, key: &Bytes) -> Option<Bytes> {
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `base`
[INFO] [stdout]   --> src/vfs.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     base: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_sstable`
[INFO] [stdout]   --> src/vfs.rs:49:18
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub async fn open_sstable(&self, level: usize) -> Result<VFile> {
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_wal`
[INFO] [stdout]   --> src/vfs.rs:58:18
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub async fn open_wal(&self) -> Result<WalFile> {
[INFO] [stdout]    |                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `base`
[INFO] [stdout]   --> src/vfs.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn base(&self) -> PathBuf {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `VFile`
[INFO] [stdout]   --> src/vfs.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct VFile {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `VFileInner`
[INFO] [stdout]   --> src/vfs.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct VFileInner {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append`
[INFO] [stdout]   --> src/vfs.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub async fn append(&self, data: &[u8]) -> Result<()> {
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_at`
[INFO] [stdout]   --> src/vfs.rs:91:18
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub async fn read_at(&self, offset: u64, len: usize) -> Result<Vec<u8>> {
[INFO] [stdout]    |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sync`
[INFO] [stdout]   --> src/vfs.rs:96:18
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub async fn sync(&self) -> Result<()> {
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]    --> src/vfs.rs:102:18
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub async fn len(&self) -> Result<usize> {
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open`
[INFO] [stdout]    --> src/vfs.rs:108:14
[INFO] [stdout]     |
[INFO] [stdout] 108 |     async fn open(path: impl AsRef<Path>) -> Result<Self> {
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append`
[INFO] [stdout]    --> src/vfs.rs:119:14
[INFO] [stdout]     |
[INFO] [stdout] 119 |     async fn append(&mut self, data: &[u8]) -> Result<()> {
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_at`
[INFO] [stdout]    --> src/vfs.rs:124:14
[INFO] [stdout]     |
[INFO] [stdout] 124 |     async fn read_at(&mut self, offset: u64, len: usize) -> Result<Vec<u8>> {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sync`
[INFO] [stdout]    --> src/vfs.rs:131:14
[INFO] [stdout]     |
[INFO] [stdout] 131 |     async fn sync(&self) -> Result<()> {
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]    --> src/vfs.rs:136:14
[INFO] [stdout]     |
[INFO] [stdout] 136 |     async fn len(&self) -> Result<usize> {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BLOCK_SIZE`
[INFO] [stdout]   --> src/wal.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const BLOCK_SIZE: usize = 32768;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HEADER_SIZE`
[INFO] [stdout]   --> src/wal.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const HEADER_SIZE: usize = 4 + 2 + 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `WalFile`
[INFO] [stdout]   --> src/wal.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct WalFile {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_record`
[INFO] [stdout]   --> src/wal.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub async fn write_record(&mut self, data: Bytes) -> Result<()> {
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ZEROES`
[INFO] [stdout]   --> src/wal.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 const ZEROES: [u8; HEADER_SIZE] = [0; HEADER_SIZE];
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_vfile`
[INFO] [stdout]   --> src/wal.rs:54:18
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub async fn from_vfile(vfile: VFile) -> Result<Self> {
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `emit_physical_record`
[INFO] [stdout]   --> src/wal.rs:62:14
[INFO] [stdout]    |
[INFO] [stdout] 62 |     async fn emit_physical_record(&mut self, ty: RecordType, rec: &[u8]) -> Result<()> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Full`
[INFO] [stdout]   --> src/wal.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     Full   = 1,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `First`
[INFO] [stdout]   --> src/wal.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     First  = 2,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Middle`
[INFO] [stdout]   --> src/wal.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     Middle = 3,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Last`
[INFO] [stdout]   --> src/wal.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     Last   = 4,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `calc`
[INFO] [stdout]   --> src/wal.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn calc(is_begin: bool, is_end: bool) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Record`
[INFO] [stdout]   --> src/wal.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 | struct Record {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Block`
[INFO] [stdout]    --> src/wal.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 | struct Block {}
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `vfs`
[INFO] [stdout]   --> src/db.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     vfs: VFS,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains`
[INFO] [stdout]   --> src/mem_table.rs:32:18
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub async fn contains(&self, key: &Bytes) -> bool {
[INFO] [stdout]    |                  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove`
[INFO] [stdout]   --> src/mem_table.rs:37:18
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub async fn remove(&self, key: &Bytes) -> Option<Bytes> {
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `base`
[INFO] [stdout]   --> src/vfs.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     base: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_sstable`
[INFO] [stdout]   --> src/vfs.rs:49:18
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub async fn open_sstable(&self, level: usize) -> Result<VFile> {
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_wal`
[INFO] [stdout]   --> src/vfs.rs:58:18
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub async fn open_wal(&self) -> Result<WalFile> {
[INFO] [stdout]    |                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `base`
[INFO] [stdout]   --> src/vfs.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn base(&self) -> PathBuf {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `VFile`
[INFO] [stdout]   --> src/vfs.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct VFile {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `VFileInner`
[INFO] [stdout]   --> src/vfs.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct VFileInner {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append`
[INFO] [stdout]   --> src/vfs.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub async fn append(&self, data: &[u8]) -> Result<()> {
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_at`
[INFO] [stdout]   --> src/vfs.rs:91:18
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub async fn read_at(&self, offset: u64, len: usize) -> Result<Vec<u8>> {
[INFO] [stdout]    |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sync`
[INFO] [stdout]   --> src/vfs.rs:96:18
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub async fn sync(&self) -> Result<()> {
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]    --> src/vfs.rs:102:18
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub async fn len(&self) -> Result<usize> {
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open`
[INFO] [stdout]    --> src/vfs.rs:108:14
[INFO] [stdout]     |
[INFO] [stdout] 108 |     async fn open(path: impl AsRef<Path>) -> Result<Self> {
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append`
[INFO] [stdout]    --> src/vfs.rs:119:14
[INFO] [stdout]     |
[INFO] [stdout] 119 |     async fn append(&mut self, data: &[u8]) -> Result<()> {
[INFO] [stdout]     |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_at`
[INFO] [stdout]    --> src/vfs.rs:124:14
[INFO] [stdout]     |
[INFO] [stdout] 124 |     async fn read_at(&mut self, offset: u64, len: usize) -> Result<Vec<u8>> {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sync`
[INFO] [stdout]    --> src/vfs.rs:131:14
[INFO] [stdout]     |
[INFO] [stdout] 131 |     async fn sync(&self) -> Result<()> {
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]    --> src/vfs.rs:136:14
[INFO] [stdout]     |
[INFO] [stdout] 136 |     async fn len(&self) -> Result<usize> {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BLOCK_SIZE`
[INFO] [stdout]   --> src/wal.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const BLOCK_SIZE: usize = 32768;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HEADER_SIZE`
[INFO] [stdout]   --> src/wal.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const HEADER_SIZE: usize = 4 + 2 + 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `WalFile`
[INFO] [stdout]   --> src/wal.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct WalFile {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_record`
[INFO] [stdout]   --> src/wal.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub async fn write_record(&mut self, data: Bytes) -> Result<()> {
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ZEROES`
[INFO] [stdout]   --> src/wal.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 const ZEROES: [u8; HEADER_SIZE] = [0; HEADER_SIZE];
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_vfile`
[INFO] [stdout]   --> src/wal.rs:54:18
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub async fn from_vfile(vfile: VFile) -> Result<Self> {
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `emit_physical_record`
[INFO] [stdout]   --> src/wal.rs:62:14
[INFO] [stdout]    |
[INFO] [stdout] 62 |     async fn emit_physical_record(&mut self, ty: RecordType, rec: &[u8]) -> Result<()> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Full`
[INFO] [stdout]   --> src/wal.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     Full   = 1,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `First`
[INFO] [stdout]   --> src/wal.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     First  = 2,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Middle`
[INFO] [stdout]   --> src/wal.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     Middle = 3,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Last`
[INFO] [stdout]   --> src/wal.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     Last   = 4,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `calc`
[INFO] [stdout]   --> src/wal.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn calc(is_begin: bool, is_end: bool) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Record`
[INFO] [stdout]   --> src/wal.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 | struct Record {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Block`
[INFO] [stdout]    --> src/wal.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 | struct Block {}
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `vfs`
[INFO] [stdout]   --> src/db.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     vfs: VFS,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused implementer of `Future` that must be used
[INFO] [stdout]   --> src/wal.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |             self.emit_physical_record(RecordType::calc(is_begin, is_end), &data[..cur_len]);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: futures do nothing unless you `.await` or poll them
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused implementer of `Future` that must be used
[INFO] [stdout]   --> src/wal.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |             self.emit_physical_record(RecordType::calc(is_begin, is_end), &data[..cur_len]);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: futures do nothing unless you `.await` or poll them
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.86s
[INFO] running `Command { std: "docker" "inspect" "e2f949085d50fbb3acd86c1e493f069c1c473a025b1391ab19f0c866d5ee594d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2f949085d50fbb3acd86c1e493f069c1c473a025b1391ab19f0c866d5ee594d", kill_on_drop: false }`
[INFO] [stdout] e2f949085d50fbb3acd86c1e493f069c1c473a025b1391ab19f0c866d5ee594d