[INFO] cloning repository https://github.com/chenqimiao/mini_bitcask_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chenqimiao/mini_bitcask_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenqimiao%2Fmini_bitcask_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenqimiao%2Fmini_bitcask_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bcf28eedf5e53f1eca9b4dede4e2fd46c08545bd
[INFO] checking chenqimiao/mini_bitcask_rs against try#22cc29ba5b459fb386c0406b9baf3a49eb0fba39 for pr-146095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenqimiao%2Fmini_bitcask_rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chenqimiao/mini_bitcask_rs
[INFO] finished tweaking git repo https://github.com/chenqimiao/mini_bitcask_rs
[INFO] tweaked toml for git repo https://github.com/chenqimiao/mini_bitcask_rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chenqimiao/mini_bitcask_rs on toolchain 22cc29ba5b459fb386c0406b9baf3a49eb0fba39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chenqimiao/mini_bitcask_rs 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" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf29e2c86934f854479c449010b8e6316db15858079730a040281e736694a5cd
[INFO] running `Command { std: "docker" "start" "-a" "bf29e2c86934f854479c449010b8e6316db15858079730a040281e736694a5cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf29e2c86934f854479c449010b8e6316db15858079730a040281e736694a5cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf29e2c86934f854479c449010b8e6316db15858079730a040281e736694a5cd", kill_on_drop: false }`
[INFO] [stdout] bf29e2c86934f854479c449010b8e6316db15858079730a040281e736694a5cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef1e2ddd66da7597bf0b7c4e1f377c4553fb476562a42482aa3ee28146143b15
[INFO] running `Command { std: "docker" "start" "-a" "ef1e2ddd66da7597bf0b7c4e1f377c4553fb476562a42482aa3ee28146143b15", kill_on_drop: false }`
[INFO] [stderr]     Checking mini_bitcask_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias `KeyIdx` is never used
[INFO] [stdout]  --> src/bitcask.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | type KeyIdx = collections::HashMap<Vec<u8>, (u64, u32)>;
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]   --> src/bitcask.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub type Result<T> = std::result::Result<T, std::io::Error>;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `KEY_VAL_COLUMN_LEN` is never used
[INFO] [stdout]   --> src/bitcask.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const KEY_VAL_COLUMN_LEN: u8 = 4;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MERGE_FILE_TEMP_EXT` is never used
[INFO] [stdout]   --> src/bitcask.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const MERGE_FILE_TEMP_EXT: &str = "merge_ext";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MiniBitcask` is never constructed
[INFO] [stdout]   --> src/bitcask.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct MiniBitcask {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Log` is never constructed
[INFO] [stdout]   --> src/bitcask.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Log {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set`, `get`, `delete`, `merge`, and `flush` are never used
[INFO] [stdout]   --> src/bitcask.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl MiniBitcask {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 35 |     fn new(path: PathBuf) -> Result<Self>{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn set(&mut self, key: &[u8], val: Vec<u8>) -> Result<()>{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn get(&mut self, key: &[u8]) -> Result<Option<Vec<u8>>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     fn delete(&mut self, key: &[u8])  -> Result<()>{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn merge(&mut self)  -> Result<()>{
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |     fn flush(&mut self) -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `load_memory`, `write_one_entry`, and `read_value` are never used
[INFO] [stdout]    --> src/bitcask.rs:97:8
[INFO] [stdout]     |
[INFO] [stdout]  96 | impl Log {
[INFO] [stdout]     | -------- associated items in this implementation
[INFO] [stdout]  97 |     fn new(path: PathBuf) -> Result<Self>{
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     fn load_memory(&self) -> Result<KeyIdx> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 168 |     fn write_one_entry(&mut self, key: &[u8], val: Option<&[u8]>) -> Result<(u64, u32)> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 196 |     fn read_value(&mut self, val_pos: u64, val_len: u32) -> Result<Vec<u8>>{
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "ef1e2ddd66da7597bf0b7c4e1f377c4553fb476562a42482aa3ee28146143b15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef1e2ddd66da7597bf0b7c4e1f377c4553fb476562a42482aa3ee28146143b15", kill_on_drop: false }`
[INFO] [stdout] ef1e2ddd66da7597bf0b7c4e1f377c4553fb476562a42482aa3ee28146143b15
