[INFO] cloning repository https://github.com/gfreezy/lsm-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gfreezy/lsm-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgfreezy%2Flsm-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgfreezy%2Flsm-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e0118a1006bebf59b91cf3ce4d8f0e86949a240
[INFO] checking gfreezy/lsm-rs against master#b359ccf1b0b7b2d2c1c4932344b806e68bd053a9 for pr-105483
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgfreezy%2Flsm-rs" "/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/gfreezy/lsm-rs on toolchain b359ccf1b0b7b2d2c1c4932344b806e68bd053a9
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b359ccf1b0b7b2d2c1c4932344b806e68bd053a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gfreezy/lsm-rs
[INFO] finished tweaking git repo https://github.com/gfreezy/lsm-rs
[INFO] tweaked toml for git repo https://github.com/gfreezy/lsm-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/gfreezy/lsm-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b359ccf1b0b7b2d2c1c4932344b806e68bd053a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v0.6.8
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[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+b359ccf1b0b7b2d2c1c4932344b806e68bd053a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 220af12a93e702f66e454641eedd0a3688e79d70a93f81572048b1405e589b89
[INFO] running `Command { std: "docker" "start" "-a" "220af12a93e702f66e454641eedd0a3688e79d70a93f81572048b1405e589b89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "220af12a93e702f66e454641eedd0a3688e79d70a93f81572048b1405e589b89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "220af12a93e702f66e454641eedd0a3688e79d70a93f81572048b1405e589b89", kill_on_drop: false }`
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[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" "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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+b359ccf1b0b7b2d2c1c4932344b806e68bd053a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe2003203510228d78d458f6f3def3116735e12101a9e57f590c5fe678197f34
[INFO] running `Command { std: "docker" "start" "-a" "fe2003203510228d78d458f6f3def3116735e12101a9e57f590c5fe678197f34", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking spectral v0.6.0
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]     Checking lsm-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `RECORD_EXTRA_SIZE` is never used
[INFO] [stdout]  --> src/block.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const RECORD_EXTRA_SIZE: usize = 7; // 7 bytes
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Full`, `First`, `Middle`, and `Last` are never constructed
[INFO] [stdout]   --> src/block.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Type {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] 12 |     Full = 1,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 13 |     First = 2,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 14 |     Middle = 3,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 15 |     Last = 4,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Type` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_records_from_buf` is never used
[INFO] [stdout]   --> src/block.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn make_records_from_buf(free_block_size: usize, buf: &[u8]) -> Vec<Record> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/block.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn new(typ: Type, data: &'a [u8]) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `write_to` is never used
[INFO] [stdout]   --> src/block.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn write_to<W: WriteBytesExt>(&self, writer: &mut W) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `compute_checksum` is never used
[INFO] [stdout]   --> src/block.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn compute_checksum(typ: Type, data: &[u8]) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `AvailableSpace` and `ThresholdReached` are never constructed
[INFO] [stdout]   --> src/memtable.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub enum SetRet {
[INFO] [stdout]    |          ------ variants in this enum
[INFO] [stdout] 9  |     AvailableSpace,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 10 |     ThresholdReached,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SetRet` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `map`, `max_size`, and `size` are never read
[INFO] [stdout]   --> src/memtable.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub struct ImmutableMemtable {
[INFO] [stdout]    |            ----------------- fields in this struct
[INFO] [stdout] 74 |     map: BTreeMap<Key, Value>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 75 |     // max memory size in bytes
[INFO] [stdout] 76 |     max_size: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 77 |     size: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ImmutableMemtable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/memtable.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn new(max_size: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `set` is never used
[INFO] [stdout]   --> src/memtable.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn set(&mut self, key: Key, value: Value) -> Fallible<SetRet> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get` is never used
[INFO] [stdout]   --> src/memtable.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn get(&self, key: &[u8]) -> Option<Value> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove` is never used
[INFO] [stdout]   --> src/memtable.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn remove(&mut self, key: Key) -> Fallible<SetRet> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_threshold_reached` is never used
[INFO] [stdout]   --> src/memtable.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn is_threshold_reached(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get` is never used
[INFO] [stdout]   --> src/memtable.rs:92:12
[INFO] [stdout]    |
[INFO] [stdout] 92 |     pub fn get(&self, key: &[u8]) -> Option<&Value> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `iter` is never used
[INFO] [stdout]   --> src/memtable.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn iter(&self) -> impl Iterator<Item = (&Key, &Value)> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SSTable` is never constructed
[INFO] [stdout]  --> src/sstable.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct SSTable {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TOMBSTONE` is never used
[INFO] [stdout]  --> src/types.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const TOMBSTONE: &[u8] = &[0x6b, 0xe5, 0xa5, 0xa2];
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `WAL_LOG_MAX_SIZE` is never used
[INFO] [stdout]  --> src/types.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const WAL_LOG_MAX_SIZE: usize = 4 * 1024 * 1024;
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLOCK_MAX_SIZE` is never used
[INFO] [stdout]  --> src/types.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub const BLOCK_MAX_SIZE: usize = 32 * 1024; // 32KB
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLOCK_MIN_FREE_SIZE` is never used
[INFO] [stdout]  --> src/types.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub const BLOCK_MIN_FREE_SIZE: usize = 6; // 6 bytes
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/wal.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Wal {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] 15 |     path: PathBuf,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/wal.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn new<P: AsRef<Path>>(path: P) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `make_records` is never used
[INFO] [stdout]   --> src/wal.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn make_records<'a>(&self, buf: &'a [u8]) -> Vec<Record<'a>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `write_records` is never used
[INFO] [stdout]   --> src/wal.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn write_records<'a>(&mut self, records: Vec<Record<'a>>) -> Fallible<Vec<Record<'a>>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `write_record` is never used
[INFO] [stdout]   --> src/wal.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn write_record(&mut self, record: &Record) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_block` is never used
[INFO] [stdout]   --> src/wal.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn new_block(&mut self) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `write_trailer` is never used
[INFO] [stdout]   --> src/wal.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn write_trailer(&mut self) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `free_space` is never used
[INFO] [stdout]   --> src/wal.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn free_space(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `current_block_free_space` is never used
[INFO] [stdout]   --> src/wal.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn current_block_free_space(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `max_size` and `size` are never read
[INFO] [stdout]   --> src/memtable.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub struct ImmutableMemtable {
[INFO] [stdout]    |            ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 76 |     max_size: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 77 |     size: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ImmutableMemtable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SSTable` is never constructed
[INFO] [stdout]  --> src/sstable.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct SSTable {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/wal.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Wal {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] 15 |     path: PathBuf,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.11s
[INFO] running `Command { std: "docker" "inspect" "fe2003203510228d78d458f6f3def3116735e12101a9e57f590c5fe678197f34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe2003203510228d78d458f6f3def3116735e12101a9e57f590c5fe678197f34", kill_on_drop: false }`
[INFO] [stdout] fe2003203510228d78d458f6f3def3116735e12101a9e57f590c5fe678197f34