[INFO] cloning repository https://github.com/Guocork/kv-storage
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Guocork/kv-storage" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGuocork%2Fkv-storage", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGuocork%2Fkv-storage'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e492067a317dd3cfb43f680b44623eb285c2a578
[INFO] checking Guocork/kv-storage against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGuocork%2Fkv-storage" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Guocork/kv-storage
[INFO] finished tweaking git repo https://github.com/Guocork/kv-storage
[INFO] tweaked toml for git repo https://github.com/Guocork/kv-storage written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Guocork/kv-storage on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Guocork/kv-storage 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3c830f3c36787b583de109c9f0962332cf1223ae050ef3744c6281b58c34443
[INFO] running `Command { std: "docker" "start" "-a" "e3c830f3c36787b583de109c9f0962332cf1223ae050ef3744c6281b58c34443", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3c830f3c36787b583de109c9f0962332cf1223ae050ef3744c6281b58c34443", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3c830f3c36787b583de109c9f0962332cf1223ae050ef3744c6281b58c34443", kill_on_drop: false }`
[INFO] [stdout] e3c830f3c36787b583de109c9f0962332cf1223ae050ef3744c6281b58c34443
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04e2cd7baf6da7997c45367003fba0a5de28f91cbe8e6b345d27901ceb1f0254
[INFO] running `Command { std: "docker" "start" "-a" "04e2cd7baf6da7997c45367003fba0a5de28f91cbe8e6b345d27901ceb1f0254", kill_on_drop: false }`
[INFO] [stderr]     Checking fs4 v0.8.3
[INFO] [stderr]     Checking kv-storage v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `SeekFrom`, `Seek`, `collections::btree_map`, `error`, `ops::Bound`, and `self`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     collections::btree_map, error, io::{BufReader, BufWriter, Read, Seek, SeekFrom, Write}, ops::Bound, path::{self, PathBuf}
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^       ^^^^^^^^^  ^^^^^^^^^        ^^^^  ^^^^^^^^          ^^^^^^^^^^         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/lib.rs:3:85
[INFO] [stdout]   |
[INFO] [stdout] 3 |     collections::btree_map, error, io::{BufReader, BufWriter, Read, Seek, SeekFrom, Write}, ops::Bound, path::{self, PathBuf}
[INFO] [stdout]   |                                                                                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/lib.rs:3:63
[INFO] [stdout]   |
[INFO] [stdout] 3 |     collections::btree_map, error, io::{BufReader, BufWriter, Read, Seek, SeekFrom, Write}, ops::Bound, path::{self, PathBuf}
[INFO] [stdout]   |                                                               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `SeekFrom`, `Seek`, `collections::btree_map`, `error`, `ops::Bound`, and `self`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     collections::btree_map, error, io::{BufReader, BufWriter, Read, Seek, SeekFrom, Write}, ops::Bound, path::{self, PathBuf}
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^       ^^^^^^^^^  ^^^^^^^^^        ^^^^  ^^^^^^^^          ^^^^^^^^^^         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `MiniBitcask` is never constructed
[INFO] [stdout]   --> src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct MiniBitcask {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `KEY_VAL_HEADER_LEN` is never used
[INFO] [stdout]  --> src/lib.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const KEY_VAL_HEADER_LEN: u32 = 4;
[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 `MERGE_FILE_EXT` is never used
[INFO] [stdout]  --> src/lib.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const MERGE_FILE_EXT: &str = "merge";
[INFO] [stdout]   |       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `path` and `file` are never read
[INFO] [stdout]   --> src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Log {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 15 |     path: PathBuf,  // 路径缓冲区 let path1 = PathBuf::from("some/directory/file.txt"); PathBuf 本身是用于表示单个文件系统路径
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 16 |     file: std::fs::File  // File 结构体允许你打开、创建、读取和写入文件。
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `log` and `keydir` are never read
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct MiniBitcask {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 20 |     log: Log,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 21 |     keydir: KeyDir
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Log {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] 25 |     fn new(path: PathBuf) -> Result<Self> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/lib.rs:3:85
[INFO] [stdout]   |
[INFO] [stdout] 3 |     collections::btree_map, error, io::{BufReader, BufWriter, Read, Seek, SeekFrom, Write}, ops::Bound, path::{self, PathBuf}
[INFO] [stdout]   |                                                                                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/lib.rs:3:63
[INFO] [stdout]   |
[INFO] [stdout] 3 |     collections::btree_map, error, io::{BufReader, BufWriter, Read, Seek, SeekFrom, Write}, ops::Bound, path::{self, PathBuf}
[INFO] [stdout]   |                                                               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `MiniBitcask` is never constructed
[INFO] [stdout]   --> src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct MiniBitcask {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `KEY_VAL_HEADER_LEN` is never used
[INFO] [stdout]  --> src/lib.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const KEY_VAL_HEADER_LEN: u32 = 4;
[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 `MERGE_FILE_EXT` is never used
[INFO] [stdout]  --> src/lib.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const MERGE_FILE_EXT: &str = "merge";
[INFO] [stdout]   |       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `path` and `file` are never read
[INFO] [stdout]   --> src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Log {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 15 |     path: PathBuf,  // 路径缓冲区 let path1 = PathBuf::from("some/directory/file.txt"); PathBuf 本身是用于表示单个文件系统路径
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 16 |     file: std::fs::File  // File 结构体允许你打开、创建、读取和写入文件。
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `log` and `keydir` are never read
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct MiniBitcask {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 20 |     log: Log,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 21 |     keydir: KeyDir
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Log {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] 25 |     fn new(path: PathBuf) -> Result<Self> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kv-storage` (lib) due to 1 previous error; 8 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `kv-storage` (lib test) due to 1 previous error; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "04e2cd7baf6da7997c45367003fba0a5de28f91cbe8e6b345d27901ceb1f0254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04e2cd7baf6da7997c45367003fba0a5de28f91cbe8e6b345d27901ceb1f0254", kill_on_drop: false }`
[INFO] [stdout] 04e2cd7baf6da7997c45367003fba0a5de28f91cbe8e6b345d27901ceb1f0254
