[INFO] cloning repository https://github.com/GoodWork0903/rust-mongodb-optimist
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GoodWork0903/rust-mongodb-optimist" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGoodWork0903%2Frust-mongodb-optimist", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGoodWork0903%2Frust-mongodb-optimist'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c008a3bc5c27b1eca50bdda9f14360d41d09e6e8
[INFO] checking GoodWork0903/rust-mongodb-optimist against master#4cf5f9580233c36f6bc8db76e282ba8a1c1ea491 for pr-154585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGoodWork0903%2Frust-mongodb-optimist" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/GoodWork0903/rust-mongodb-optimist
[INFO] finished tweaking git repo https://github.com/GoodWork0903/rust-mongodb-optimist
[INFO] tweaked toml for git repo https://github.com/GoodWork0903/rust-mongodb-optimist written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/GoodWork0903/rust-mongodb-optimist on toolchain 4cf5f9580233c36f6bc8db76e282ba8a1c1ea491
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4cf5f9580233c36f6bc8db76e282ba8a1c1ea491" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/GoodWork0903/rust-mongodb-optimist 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" "+4cf5f9580233c36f6bc8db76e282ba8a1c1ea491" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zopfli v0.8.0
[INFO] [stderr]   Downloaded deflate64 v0.1.8
[INFO] [stderr]   Downloaded thiserror-impl v1.0.60
[INFO] [stderr]   Downloaded async-channel v2.3.0
[INFO] [stderr]   Downloaded thiserror v1.0.60
[INFO] [stderr]   Downloaded piper v0.2.2
[INFO] [stderr]   Downloaded blocking v1.6.0
[INFO] [stderr]   Downloaded async-signal v0.2.6
[INFO] [stderr]   Downloaded async-io v2.3.2
[INFO] [stderr]   Downloaded event-listener v5.3.0
[INFO] [stderr]   Downloaded zip v1.2.3
[INFO] [stderr]   Downloaded polling v3.7.0
[INFO] [stderr]   Downloaded bson v2.10.0
[INFO] [stderr]   Downloaded hyper v1.3.1
[INFO] [stderr]   Downloaded reqwest v0.12.4
[INFO] [stderr]   Downloaded libz-ng-sys v1.1.15
[INFO] [stderr]   Downloaded openssl-src v300.2.3+3.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4cf5f9580233c36f6bc8db76e282ba8a1c1ea491" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1165a1802ddb11db47632806d036d49e861691fa9ed87ce35648645f9145290c
[INFO] running `Command { std: "docker" "start" "-a" "1165a1802ddb11db47632806d036d49e861691fa9ed87ce35648645f9145290c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1165a1802ddb11db47632806d036d49e861691fa9ed87ce35648645f9145290c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1165a1802ddb11db47632806d036d49e861691fa9ed87ce35648645f9145290c", kill_on_drop: false }`
[INFO] [stdout] 1165a1802ddb11db47632806d036d49e861691fa9ed87ce35648645f9145290c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4cf5f9580233c36f6bc8db76e282ba8a1c1ea491" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52fcec23004e36bc192923cb1888e653bb263b9a93fdbdd12280a7e70eb0bd3f
[INFO] running `Command { std: "docker" "start" "-a" "52fcec23004e36bc192923cb1888e653bb263b9a93fdbdd12280a7e70eb0bd3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]     Checking value-bag v1.9.0
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling serde v1.0.201
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]     Checking futures-lite v2.3.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking waker-fn v1.2.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]    Compiling rustix v0.37.27
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]     Checking async-lock v2.8.0
[INFO] [stderr]     Checking event-listener v4.0.3
[INFO] [stderr]     Checking event-listener v5.3.0
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling thiserror v1.0.60
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking event-listener-strategy v0.4.0
[INFO] [stderr]     Checking event-listener-strategy v0.5.2
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking async-task v4.7.1
[INFO] [stderr]     Checking async-lock v3.3.0
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]     Checking fastrand v2.1.0
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling syn v2.0.63
[INFO] [stderr]    Compiling jobserver v0.1.31
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling cc v1.0.97
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking parking_lot v0.12.2
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking piper v0.2.2
[INFO] [stderr]     Checking http-body v1.0.0
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]    Compiling time-macros v0.2.18
[INFO] [stderr]     Checking async-channel v2.3.0
[INFO] [stderr]     Checking ipnet v2.9.0
[INFO] [stderr]     Checking time-core v0.1.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking try-lock v0.2.5
[INFO] [stderr]     Checking num_threads v0.1.7
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking num-conv v0.1.0
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking blocking v1.6.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking event-listener v3.1.0
[INFO] [stderr]     Checking tower-layer v0.3.2
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking data-encoding v2.6.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.117
[INFO] [stderr]    Compiling zstd-safe v7.1.0
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking anstyle-parse v0.2.4
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]    Compiling rustc_version_runtime v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.0
[INFO] [stderr]     Checking colorchoice v1.0.1
[INFO] [stderr]     Checking anstyle v1.0.7
[INFO] [stderr]     Checking anstyle-query v1.0.3
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking crc-catalog v2.4.0
[INFO] [stderr]     Checking zerocopy v0.7.34
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking crc v3.2.1
[INFO] [stderr]     Checking http-body-util v0.1.1
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking anstream v0.6.14
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]     Checking base64 v0.22.1
[INFO] [stderr]    Compiling openssl-src v300.2.3+3.2.1
[INFO] [stderr]    Compiling cmake v0.1.50
[INFO] [stderr]     Checking time v0.3.36
[INFO] [stderr]     Checking finl_unicode v1.2.0
[INFO] [stderr]    Compiling zip v1.2.3
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking rustls-pki-types v1.7.0
[INFO] [stderr]     Checking strsim v0.11.1
[INFO] [stderr]     Checking typed-arena v2.0.2
[INFO] [stderr]     Checking clap_lex v0.7.0
[INFO] [stderr]     Checking rustls-pemfile v2.1.2
[INFO] [stderr]     Checking zopfli v0.8.0
[INFO] [stderr]     Checking lzma-rs v0.3.0
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking rustls-pemfile v1.0.4
[INFO] [stderr]     Checking stringprep v0.1.4
[INFO] [stderr]     Checking pbkdf2 v0.12.2
[INFO] [stderr]     Checking clap_builder v4.5.2
[INFO] [stderr]     Checking sha-1 v0.10.1
[INFO] [stderr]     Checking pbkdf2 v0.11.0
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking colored v2.1.0
[INFO] [stderr]    Compiling openssl-sys v0.9.102
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]    Compiling zstd-sys v2.0.10+zstd.1.5.6
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling libz-ng-sys v1.1.15
[INFO] [stderr]    Compiling jemalloc-sys v0.5.4+5.3.0-patched
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking encoding_rs v0.8.34
[INFO] [stderr]     Checking deflate64 v0.1.8
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]     Checking webpki-roots v0.25.4
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking sync_wrapper v0.1.2
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking mime v0.3.17
[INFO] [stderr]     Checking simple_logger v5.0.0
[INFO] [stderr]     Checking polling v3.7.0
[INFO] [stderr]     Checking async-io v2.3.2
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.201
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling thiserror-impl v1.0.60
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling enum-as-inner v0.4.0
[INFO] [stderr]     Checking async-signal v0.2.6
[INFO] [stderr]    Compiling async-trait v0.1.80
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]     Checking async-process v1.8.1
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling serde_with_macros v1.5.2
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]     Checking bzip2 v0.4.4
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]    Compiling typed-builder v0.10.0
[INFO] [stderr]    Compiling clap_derive v4.5.4
[INFO] [stderr]     Checking tokio-util v0.7.11
[INFO] [stderr]     Checking h2 v0.4.4
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking trust-dns-proto v0.21.2
[INFO] [stderr]    Compiling displaydoc v0.2.4
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking clap v4.5.4
[INFO] [stderr]     Checking serde_bytes v0.11.14
[INFO] [stderr]     Checking uuid v1.8.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde_with v1.14.0
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking bson v2.10.0
[INFO] [stderr]     Checking trust-dns-resolver v0.21.2
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]     Checking hyper v1.3.1
[INFO] [stderr]     Checking async-std-resolver v0.21.2
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking rustls-webpki v0.101.7
[INFO] [stderr]     Checking flate2 v1.0.30
[INFO] [stderr]     Checking hyper-util v0.1.3
[INFO] [stderr]     Checking tokio-rustls v0.24.1
[INFO] [stderr]     Checking mongodb v2.8.2
[INFO] [stderr]     Checking zstd v0.13.1
[INFO] [stderr]     Checking jemallocator v0.5.4
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking reqwest v0.12.4
[INFO] [stderr]     Checking whois v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]  --> src/db.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log::{debug, info};
[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 imports: `UpdateOptions` and `bson`
[INFO] [stdout]  --> src/db.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     bson,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     bson::{doc, Document},
[INFO] [stdout] 6 |     options::{InsertManyOptions, UpdateOptions, DeleteOptions},
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]  --> src/db.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log::{debug, info};
[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 imports: `UpdateOptions` and `bson`
[INFO] [stdout]  --> src/db.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     bson,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     bson::{doc, Document},
[INFO] [stdout] 6 |     options::{InsertManyOptions, UpdateOptions, DeleteOptions},
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delete_options`
[INFO] [stdout]   --> src/db.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let delete_options = DeleteOptions::builder().build();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delete_options`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/db.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let result = spawn_blocking(move || {
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delete_options`
[INFO] [stdout]   --> src/db.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let delete_options = DeleteOptions::builder().build();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delete_options`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/db.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let result = spawn_blocking(move || {
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 4m 46s
[INFO] running `Command { std: "docker" "inspect" "52fcec23004e36bc192923cb1888e653bb263b9a93fdbdd12280a7e70eb0bd3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52fcec23004e36bc192923cb1888e653bb263b9a93fdbdd12280a7e70eb0bd3f", kill_on_drop: false }`
[INFO] [stdout] 52fcec23004e36bc192923cb1888e653bb263b9a93fdbdd12280a7e70eb0bd3f
