[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] testing jiamingluuu/smallDB against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[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] 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] validating manifest of git repo https://github.com/jiamingluuu/smallDB on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prost v0.13.1
[INFO] [stderr]   Downloaded page_size v0.6.0
[INFO] [stderr]   Downloaded jammdb v0.11.0
[INFO] [stderr]   Downloaded memmap2 v0.9.4
[INFO] [stderr]   Downloaded anyhow v1.0.82
[INFO] [stderr]   Downloaded crossbeam-skiplist v0.1.3
[INFO] [stderr]   Downloaded fs_extra v1.3.0
[INFO] [stderr]   Downloaded fs4 v0.7.0
[INFO] [stderr]   Downloaded either v1.11.0
[INFO] [stderr]   Downloaded prost-derive v0.13.1
[INFO] [stderr]   Downloaded serde_bytes v0.11.14
[INFO] [stderr]   Downloaded syn v2.0.58
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c392831e6775ddf7da915934c1648c9e00ff889292a3fafff0cde6c2be621be4
[INFO] running `Command { std: "docker" "start" "-a" "c392831e6775ddf7da915934c1648c9e00ff889292a3fafff0cde6c2be621be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c392831e6775ddf7da915934c1648c9e00ff889292a3fafff0cde6c2be621be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c392831e6775ddf7da915934c1648c9e00ff889292a3fafff0cde6c2be621be4", kill_on_drop: false }`
[INFO] [stdout] c392831e6775ddf7da915934c1648c9e00ff889292a3fafff0cde6c2be621be4
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41fa54049a6bfde2ad6d099a38b46e56127dd5065d71b9c508b2c68a25791606
[INFO] running `Command { std: "docker" "start" "-a" "41fa54049a6bfde2ad6d099a38b46e56127dd5065d71b9c508b2c68a25791606", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[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 anyhow v1.0.82
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling either v1.11.0
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling bytes v1.6.0
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling bumpalo v3.16.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling fs_extra v1.3.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling crossbeam-skiplist v0.1.3
[INFO] [stderr]    Compiling page_size v0.6.0
[INFO] [stderr]    Compiling memmap2 v0.9.4
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling fs4 v0.7.0
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling jammdb v0.11.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling prost-derive v0.13.1
[INFO] [stderr]    Compiling prost v0.13.1
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling serde_bytes v0.11.14
[INFO] [stderr]    Compiling smallDB v0.1.0 (/opt/rustwide/workdir)
[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: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/batch.rs:54:28
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn new_write_batch(&self, options: WriteBatchOptions) -> Result<WriteBatch> {
[INFO] [stdout]    |                            ^^^^^ this lifetime flows to the output      ---------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn new_write_batch(&self, options: WriteBatchOptions) -> Result<WriteBatch<'_>> {
[INFO] [stdout]    |                                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterator.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn iter(&self, options: IteratorOptions) -> Iterator {
[INFO] [stdout]    |                 ^^^^^                               -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn iter(&self, options: IteratorOptions) -> Iterator<'_> {
[INFO] [stdout]    |                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 53.57s
[INFO] running `Command { std: "docker" "inspect" "41fa54049a6bfde2ad6d099a38b46e56127dd5065d71b9c508b2c68a25791606", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41fa54049a6bfde2ad6d099a38b46e56127dd5065d71b9c508b2c68a25791606", kill_on_drop: false }`
[INFO] [stdout] 41fa54049a6bfde2ad6d099a38b46e56127dd5065d71b9c508b2c68a25791606
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b5fac1fef71c03a53af986a3eeda00499db204fddabf339ef439ff26532c4e9
[INFO] running `Command { std: "docker" "start" "-a" "8b5fac1fef71c03a53af986a3eeda00499db204fddabf339ef439ff26532c4e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallDB v0.1.0 (/opt/rustwide/workdir)
[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: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/batch.rs:54:28
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn new_write_batch(&self, options: WriteBatchOptions) -> Result<WriteBatch> {
[INFO] [stdout]    |                            ^^^^^ this lifetime flows to the output      ---------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn new_write_batch(&self, options: WriteBatchOptions) -> Result<WriteBatch<'_>> {
[INFO] [stdout]    |                                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterator.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn iter(&self, options: IteratorOptions) -> Iterator {
[INFO] [stdout]    |                 ^^^^^                               -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn iter(&self, options: IteratorOptions) -> Iterator<'_> {
[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`, 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] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/batch.rs:54:28
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn new_write_batch(&self, options: WriteBatchOptions) -> Result<WriteBatch> {
[INFO] [stdout]    |                            ^^^^^ this lifetime flows to the output      ---------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn new_write_batch(&self, options: WriteBatchOptions) -> Result<WriteBatch<'_>> {
[INFO] [stdout]    |                                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterator.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn iter(&self, options: IteratorOptions) -> Iterator {
[INFO] [stdout]    |                 ^^^^^                               -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn iter(&self, options: IteratorOptions) -> Iterator<'_> {
[INFO] [stdout]    |                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.30s
[INFO] running `Command { std: "docker" "inspect" "8b5fac1fef71c03a53af986a3eeda00499db204fddabf339ef439ff26532c4e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b5fac1fef71c03a53af986a3eeda00499db204fddabf339ef439ff26532c4e9", kill_on_drop: false }`
[INFO] [stdout] 8b5fac1fef71c03a53af986a3eeda00499db204fddabf339ef439ff26532c4e9
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 078801d152aeb681dead4bddb2d759b8f624ed41ee836f4c9ff610205dad10a4
[INFO] running `Command { std: "docker" "start" "-a" "078801d152aeb681dead4bddb2d759b8f624ed41ee836f4c9ff610205dad10a4", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]   --> src/fio/mmap.rs:51:21
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn write(&self, buf: &[u8]) -> Result<usize> {
[INFO] [stderr]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `io_type` is never read
[INFO] [stderr]   --> src/db.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub struct Engine {
[INFO] [stderr]    |            ------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 71 |     io_type: IOType,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `key_num`, `data_file_num`, `reclaim_size`, and `disk_size` are never read
[INFO] [stderr]   --> src/db.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub struct Stat {
[INFO] [stderr]    |            ---- fields in this struct
[INFO] [stderr] 76 |     /// Number of keys in the engine.
[INFO] [stderr] 77 |     key_num: usize,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 80 |     data_file_num: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 83 |     reclaim_size: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 86 |     disk_size: u64,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `smallDB` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = help: convert the identifier to snake case: `small_db`
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/batch.rs:54:28
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn new_write_batch(&self, options: WriteBatchOptions) -> Result<WriteBatch> {
[INFO] [stderr]    |                            ^^^^^ this lifetime flows to the output      ---------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn new_write_batch(&self, options: WriteBatchOptions) -> Result<WriteBatch<'_>> {
[INFO] [stderr]    |                                                                                   ++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/iterator.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn iter(&self, options: IteratorOptions) -> Iterator {
[INFO] [stderr]    |                 ^^^^^                               -------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn iter(&self, options: IteratorOptions) -> Iterator<'_> {
[INFO] [stderr]    |                                                             ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `smallDB` (lib) generated 6 warnings
[INFO] [stderr] warning: fields `key_num`, `data_file_num`, and `disk_size` are never read
[INFO] [stderr]   --> src/db.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub struct Stat {
[INFO] [stderr]    |            ---- fields in this struct
[INFO] [stderr] 76 |     /// Number of keys in the engine.
[INFO] [stderr] 77 |     key_num: usize,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 80 |     data_file_num: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 86 |     disk_size: u64,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `smallDB` (lib test) generated 5 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/smallDB-0cf5f860a017bdc4)
[INFO] [stdout] 
[INFO] [stdout] running 43 tests
[INFO] [stdout] test data::data_file::tests::test_data_file_rld_multiple_rw ... ok
[INFO] [stdout] test batch::tests::test_write_batch_1 ... ok
[INFO] [stdout] test data::log_record::tests::test_log_record_encode ... ok
[INFO] [stdout] test data::data_file::tests::test_data_file_write ... ok
[INFO] [stdout] test db::tests::test_engine_delete ... ok
[INFO] [stdout] test data::data_file::tests::test_data_file_sync ... ok
[INFO] [stdout] test db::tests::test_engine_filelock ... ok
[INFO] [stdout] test data::data_file::tests::test_new_date_file ... ok
[INFO] [stdout] test index::btree::tests::test_btree_delete ... ok
[INFO] [stdout] test index::btree::tests::test_btree_get ... ok
[INFO] [stdout] test fio::file_io::tests::test_file_io_write ... ok
[INFO] [stdout] test fio::file_io::tests::test_file_io_sync ... ok
[INFO] [stdout] test index::btree::tests::test_btree_iterator_seek ... ok
[INFO] [stdout] test index::btree::tests::test_btree_iterator_next ... ok
[INFO] [stdout] test index::skiplist::tests::test_skl_get ... ok
[INFO] [stdout] test index::btree::tests::test_btree_put ... ok
[INFO] [stdout] test index::skiplist::tests::test_skl_delete ... ok
[INFO] [stdout] test fio::file_io::tests::test_file_io_read ... ok
[INFO] [stdout] test index::skiplist::tests::test_skl_put ... ok
[INFO] [stdout] test index::skiplist::tests::test_skl_list_keys ... ok
[INFO] [stdout] test iterator::tests::test_iterator_prefix ... ok
[INFO] [stdout] test iterator::tests::test_fold ... ok
[INFO] [stdout] test merge::tests::test_merge_1 ... ok
[INFO] [stdout] test db::tests::test_engine_reboot ... ok
[INFO] [stdout] test data::data_file::tests::test_data_file_rld_deleted ... ok
[INFO] [stdout] test fio::mmap::tests::test_mmap_read ... ok
[INFO] [stdout] test index::skiplist::tests::test_skl_iterator ... ok
[INFO] [stdout] test iterator::tests::test_iterator_seek ... ok
[INFO] [stdout] test iterator::tests::test_list_keys ... ok
[INFO] [stdout] test index::bptree::tests::test_bptree_delete ... ok
[INFO] [stdout] test index::bptree::tests::test_bptree_get ... ok
[INFO] [stdout] test index::bptree::tests::test_bptree_itreator ... ok
[INFO] [stdout] test index::bptree::tests::test_bptree_list_keys ... ok
[INFO] [stdout] test index::bptree::tests::test_bptree_put ... ok
[INFO] [stdout] test utils::rand_kv::test_get_test_key ... ok
[INFO] [stdout] test batch::tests::test_write_batch_2 ... ok
[INFO] [stdout] test db::tests::test_engine_stat ... ok
[INFO] [stdout] test db::tests::test_engine_put ... ok
[INFO] [stdout] test merge::tests::test_merge_4 ... ok
[INFO] [stdout] test db::tests::test_engine_get ... ok
[INFO] [stdout] test merge::tests::test_merge_2 ... ok
[INFO] [stdout] test merge::tests::test_merge_3 ... ok
[INFO] [stdout] test merge::tests::test_merge_5 ... ok
[INFO] [stderr]    Doc-tests smallDB
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 43 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.59s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/data/log_record.rs - data::log_record::LogRecord (line 18) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/data/log_record.rs - data::log_record::LogRecord (line 18) stdout ----
[INFO] [stdout] error: expected item, found `+`
[INFO] [stdout]  --> src/data/log_record.rs:19:2
[INFO] [stdout]   |
[INFO] [stdout] 1 |  +------+----------+------------+----------+-------------------------+-----+
[INFO] [stdout]   |  ^ expected item
[INFO] [stdout]   |
[INFO] [stdout]   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/data/log_record.rs - data::log_record::LogRecord (line 18)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "078801d152aeb681dead4bddb2d759b8f624ed41ee836f4c9ff610205dad10a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "078801d152aeb681dead4bddb2d759b8f624ed41ee836f4c9ff610205dad10a4", kill_on_drop: false }`
[INFO] [stdout] 078801d152aeb681dead4bddb2d759b8f624ed41ee836f4c9ff610205dad10a4
