[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 }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c9c30c9bf5cc68c3fbaf1f549b87f37d0efe78b
[INFO] checking cfeitong/cft-leveldb against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfeitong%2Fcft-leveldb" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[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-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cfeitong/cft-leveldb on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cfeitong/cft-leveldb 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stdout] warning: method `put_var_u64_le` is never used
[INFO] [stdout]  --> src/encoding.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait BufMutExt: BufMut {
[INFO] [stdout]   |           --------- method in this trait
[INFO] [stdout] 8 |     fn put_var_u32_le(&mut self, n: u32);
[INFO] [stdout] 9 |     fn put_var_u64_le(&mut self, n: u64);
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `BytesExt` is never used
[INFO] [stdout]   --> src/encoding.rs:72:11
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub trait BytesExt {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `contains` and `remove` are never used
[INFO] [stdout]   --> src/mem_table.rs:32:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl MemTable {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub async fn contains(&self, key: &Bytes) -> bool {
[INFO] [stdout]    |                  ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub async fn remove(&self, key: &Bytes) -> Option<Bytes> {
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RESTART_THRESHOLD` is never used
[INFO] [stdout]  --> src/sorted_stable.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const RESTART_THRESHOLD: usize = 16;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BlockHandle` is never constructed
[INFO] [stdout]   --> src/sorted_stable.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct BlockHandle {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BlockBuilder` is never constructed
[INFO] [stdout]   --> src/sorted_stable.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct BlockBuilder {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add`, and `build` are never used
[INFO] [stdout]   --> src/sorted_stable.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl BlockBuilder {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 21 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     fn add(&mut self, key: Bytes, value: Bytes) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn build(mut self) -> Bytes {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shared_prefix_len` is never used
[INFO] [stdout]   --> src/sorted_stable.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn shared_prefix_len(key1: &Bytes, key2: &Bytes) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `open_sstable` is never used
[INFO] [stdout]   --> src/vfs.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Vfs {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub async fn open_sstable(&self, level: usize) -> Result<VFile> {
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_at`, `read_exact`, and `sync` are never used
[INFO] [stdout]    --> src/vfs.rs:91:18
[INFO] [stdout]     |
[INFO] [stdout]  83 | impl VFile {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  91 |     pub async fn read_at(&self, offset: u64, len: usize) -> Result<Vec<u8>> {
[INFO] [stdout]     |                  ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  96 |     pub async fn read_exact(&self, buf: &mut [u8]) -> Result<usize> {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub async fn sync(&self) -> Result<()> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_at` and `sync` are never used
[INFO] [stdout]    --> src/vfs.rs:135:14
[INFO] [stdout]     |
[INFO] [stdout] 119 | impl VFileInner {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 135 |     async fn read_at(&mut self, offset: u64, len: usize) -> Result<Vec<u8>> {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     async fn sync(&self) -> Result<()> {
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `into_inner` is never used
[INFO] [stdout]   --> src/wal.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 72 | impl WalFileWriter {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 73 |     /// into inner vfile
[INFO] [stdout] 74 |     pub fn into_inner(self) -> VFile {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WalFileReader` is never constructed
[INFO] [stdout]    --> src/wal.rs:146:12
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub struct WalFileReader {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `open`, `read_record`, `into_record_stream`, `read_data`, and `into_data_stream` are never used
[INFO] [stdout]    --> src/wal.rs:151:18
[INFO] [stdout]     |
[INFO] [stdout] 150 | impl WalFileReader {
[INFO] [stdout]     | ------------------ associated items in this implementation
[INFO] [stdout] 151 |     pub async fn new(file: VFile) -> Result<Self> {
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 155 |     pub async fn open(vfs: Vfs) -> Result<Self> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 161 |     async fn read_record(&mut self) -> Result<Option<Record>> {
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 193 |     fn into_record_stream(self) -> impl Stream<Item = Result<Record>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pub async fn read_data(&mut self) -> Result<Option<Bytes>> {
[INFO] [stdout]     |                  ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 224 |     pub fn into_data_stream(self) -> impl Stream<Item = Result<Bytes>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_rest_records` is never used
[INFO] [stdout]    --> src/wal.rs:232:10
[INFO] [stdout]     |
[INFO] [stdout] 232 | async fn read_rest_records(reader: &mut WalFileReader) -> Result<Vec<Record>> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_u8` is never used
[INFO] [stdout]    --> src/wal.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 261 | impl RecordType {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 271 |     fn from_u8(ty: u8) -> Result<Self> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Record` is never constructed
[INFO] [stdout]    --> src/wal.rs:283:12
[INFO] [stdout]     |
[INFO] [stdout] 283 | pub struct Record {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_valid` is never used
[INFO] [stdout]    --> src/wal.rs:291:8
[INFO] [stdout]     |
[INFO] [stdout] 290 | impl Record {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] 291 |     fn is_valid(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vfs` is never read
[INFO] [stdout]   --> src/db.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct Db {
[INFO] [stdout]    |            -- field in this struct
[INFO] [stdout] 32 |     vfs: Vfs,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `contains` and `remove` are never used
[INFO] [stdout]   --> src/mem_table.rs:32:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl MemTable {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub async fn contains(&self, key: &Bytes) -> bool {
[INFO] [stdout]    |                  ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub async fn remove(&self, key: &Bytes) -> Option<Bytes> {
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RESTART_THRESHOLD` is never used
[INFO] [stdout]  --> src/sorted_stable.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const RESTART_THRESHOLD: usize = 16;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BlockHandle` is never constructed
[INFO] [stdout]   --> src/sorted_stable.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct BlockHandle {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BlockBuilder` is never constructed
[INFO] [stdout]   --> src/sorted_stable.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct BlockBuilder {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add`, and `build` are never used
[INFO] [stdout]   --> src/sorted_stable.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl BlockBuilder {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 21 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     fn add(&mut self, key: Bytes, value: Bytes) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn build(mut self) -> Bytes {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shared_prefix_len` is never used
[INFO] [stdout]   --> src/sorted_stable.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn shared_prefix_len(key1: &Bytes, key2: &Bytes) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `open_sstable` is never used
[INFO] [stdout]   --> src/vfs.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Vfs {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub async fn open_sstable(&self, level: usize) -> Result<VFile> {
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_at` and `sync` are never used
[INFO] [stdout]    --> src/vfs.rs:91:18
[INFO] [stdout]     |
[INFO] [stdout]  83 | impl VFile {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  91 |     pub async fn read_at(&self, offset: u64, len: usize) -> Result<Vec<u8>> {
[INFO] [stdout]     |                  ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub async fn sync(&self) -> Result<()> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_at` and `sync` are never used
[INFO] [stdout]    --> src/vfs.rs:135:14
[INFO] [stdout]     |
[INFO] [stdout] 119 | impl VFileInner {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 135 |     async fn read_at(&mut self, offset: u64, len: usize) -> Result<Vec<u8>> {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     async fn sync(&self) -> Result<()> {
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `into_inner` is never used
[INFO] [stdout]   --> src/wal.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 72 | impl WalFileWriter {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 73 |     /// into inner vfile
[INFO] [stdout] 74 |     pub fn into_inner(self) -> VFile {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `into_record_stream` and `into_data_stream` are never used
[INFO] [stdout]    --> src/wal.rs:193:8
[INFO] [stdout]     |
[INFO] [stdout] 150 | impl WalFileReader {
[INFO] [stdout]     | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 193 |     fn into_record_stream(self) -> impl Stream<Item = Result<Record>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 224 |     pub fn into_data_stream(self) -> impl Stream<Item = Result<Bytes>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `len` is never read
[INFO] [stdout]    --> src/wal.rs:285:9
[INFO] [stdout]     |
[INFO] [stdout] 283 | pub struct Record {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 284 |     pub crc:  u32,
[INFO] [stdout] 285 |     pub len:  u16,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vfs` is never read
[INFO] [stdout]   --> src/db.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct Db {
[INFO] [stdout]    |            -- field in this struct
[INFO] [stdout] 32 |     vfs: Vfs,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.34s
[INFO] running `Command { std: "docker" "inspect" "bb429b38ce59afd7f9d082ad71e6edea739b7b8f892dc5f39ce7036d7b9c2661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb429b38ce59afd7f9d082ad71e6edea739b7b8f892dc5f39ce7036d7b9c2661", kill_on_drop: false }`
[INFO] [stdout] bb429b38ce59afd7f9d082ad71e6edea739b7b8f892dc5f39ce7036d7b9c2661
