[INFO] cloning repository https://github.com/jiamingluuu/smallDB
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jiamingluuu/smallDB" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiamingluuu%2FsmallDB", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiamingluuu%2FsmallDB'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2df0d65801838fea08788b8424fbf4ea6be15f2
[INFO] checking jiamingluuu/smallDB against master#613bdd49978298648ed05ace086bd1ecad54b44a for pr-136458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiamingluuu%2FsmallDB" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jiamingluuu/smallDB on toolchain 613bdd49978298648ed05ace086bd1ecad54b44a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jiamingluuu/smallDB
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/jiamingluuu/smallDB
[INFO] tweaked toml for git repo https://github.com/jiamingluuu/smallDB written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jiamingluuu/smallDB 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" "+613bdd49978298648ed05ace086bd1ecad54b44a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jammdb v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 134398b124aee1a728c3ca6818a6d574daeef8ba835e8d16b5269e0597d283af
[INFO] running `Command { std: "docker" "start" "-a" "134398b124aee1a728c3ca6818a6d574daeef8ba835e8d16b5269e0597d283af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "134398b124aee1a728c3ca6818a6d574daeef8ba835e8d16b5269e0597d283af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "134398b124aee1a728c3ca6818a6d574daeef8ba835e8d16b5269e0597d283af", kill_on_drop: false }`
[INFO] [stdout] 134398b124aee1a728c3ca6818a6d574daeef8ba835e8d16b5269e0597d283af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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_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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 815236a0d5fc8667db2e4940c48e2aff23cd2e33f5cc73d25ec8494b2733cf99
[INFO] running `Command { std: "docker" "start" "-a" "815236a0d5fc8667db2e4940c48e2aff23cd2e33f5cc73d25ec8494b2733cf99", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling anyhow v1.0.82
[INFO] [stderr]    Compiling either v1.11.0
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking keccak v0.1.5
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking bumpalo v3.16.0
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking fs_extra v1.3.0
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking crossbeam-skiplist v0.1.3
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking page_size v0.6.0
[INFO] [stderr]     Checking memmap2 v0.9.4
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking fs4 v0.7.0
[INFO] [stderr]     Checking jammdb v0.11.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling prost-derive v0.13.1
[INFO] [stderr]     Checking prost v0.13.1
[INFO] [stderr]     Checking serde_bytes v0.11.14
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking smallDB v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/db.rs:211:24
[INFO] [stdout]     |
[INFO] [stdout] 211 |         self.lock_file.unlock().unwrap();
[INFO] [stdout]     |                        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `unlock(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::unlock`
[INFO] [stdout]    --> src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/db.rs:211:24
[INFO] [stdout]     |
[INFO] [stdout] 211 |         self.lock_file.unlock().unwrap();
[INFO] [stdout]     |                        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `unlock(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::unlock`
[INFO] [stdout]    --> src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/fio/mmap.rs:51:21
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn write(&self, buf: &[u8]) -> Result<usize> {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `io_type` is never read
[INFO] [stdout]   --> src/db.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Engine {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 71 |     io_type: IOType,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key_num`, `data_file_num`, `reclaim_size`, and `disk_size` are never read
[INFO] [stdout]   --> src/db.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub struct Stat {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 76 |     /// Number of keys in the engine.
[INFO] [stdout] 77 |     key_num: usize,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     data_file_num: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     reclaim_size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86 |     disk_size: u64,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `smallDB` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `small_db`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/fio/mmap.rs:51:21
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn write(&self, buf: &[u8]) -> Result<usize> {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `io_type` is never read
[INFO] [stdout]   --> src/db.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Engine {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 71 |     io_type: IOType,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key_num`, `data_file_num`, and `disk_size` are never read
[INFO] [stdout]   --> src/db.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub struct Stat {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 76 |     /// Number of keys in the engine.
[INFO] [stdout] 77 |     key_num: usize,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     data_file_num: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86 |     disk_size: u64,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.28s
[INFO] running `Command { std: "docker" "inspect" "815236a0d5fc8667db2e4940c48e2aff23cd2e33f5cc73d25ec8494b2733cf99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "815236a0d5fc8667db2e4940c48e2aff23cd2e33f5cc73d25ec8494b2733cf99", kill_on_drop: false }`
[INFO] [stdout] 815236a0d5fc8667db2e4940c48e2aff23cd2e33f5cc73d25ec8494b2733cf99