[INFO] fetching crate stashlog 0.0.13...
[INFO] testing stashlog-0.0.13 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate stashlog 0.0.13 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate stashlog 0.0.13
[INFO] finished tweaking crates.io crate stashlog 0.0.13
[INFO] tweaked toml for crates.io crate stashlog 0.0.13 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stashlog 0.0.13 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 84 packages to latest compatible versions
[INFO] [stderr]       Adding gethostname v0.5.0 (available: v1.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4be27bd0665deffa60de72c85243de91334cdedfddc250b09ca2f82fee9730b3
[INFO] running `Command { std: "docker" "start" "-a" "4be27bd0665deffa60de72c85243de91334cdedfddc250b09ca2f82fee9730b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4be27bd0665deffa60de72c85243de91334cdedfddc250b09ca2f82fee9730b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4be27bd0665deffa60de72c85243de91334cdedfddc250b09ca2f82fee9730b3", kill_on_drop: false }`
[INFO] [stdout] 4be27bd0665deffa60de72c85243de91334cdedfddc250b09ca2f82fee9730b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28603b0dbaf935f96100ea40d7fd4eb7ca6a15aee4b6cf01b393ea9d141b761f
[INFO] running `Command { std: "docker" "start" "-a" "28603b0dbaf935f96100ea40d7fd4eb7ca6a15aee4b6cf01b393ea9d141b761f", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling gethostname v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling stashlog v0.0.13 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `version`, `app_name`, and `file_path` are never read
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Config {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 26 |     version: i8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 27 |     app_name: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 28 |     file_path: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Record` is never constructed
[INFO] [stdout]   --> src/lib.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Record {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl Record {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 55 |     fn new(
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Logger` is never constructed
[INFO] [stdout]   --> src/lib.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | struct Logger {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `log_extra`, `log`, `info_extra`, and `info` are never used
[INFO] [stdout]    --> src/lib.rs:87:8
[INFO] [stdout]     |
[INFO] [stdout]  86 | impl Logger {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout]  87 |     fn log_extra(&self, level: Level, message: &str, extra_fields: &str) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn log(&self, level: Level, message: &str) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn info_extra(&self, message: &str, extra_fields: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub fn info(&self, message: &str) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_to_file` is never used
[INFO] [stdout]    --> src/lib.rs:122:4
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn write_to_file(file_name: &str, data: &[u8]) -> Result<(), Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `zulu_serializer` is never used
[INFO] [stdout]    --> src/lib.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn zulu_serializer<S>(datetime: &DateTime<Utc>, serializer: S) -> Result<S::Ok, S::Error>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 | /         write_to_file(
[INFO] [stdout] 96 | |             self.config.file_path.as_str(),
[INFO] [stdout] 97 | |             serde_json::to_string(&record).unwrap().as_bytes(),
[INFO] [stdout] 98 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let _ = write_to_file(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 | /         write_to_file(
[INFO] [stdout] 109 | |             self.config.file_path.as_str(),
[INFO] [stdout] 110 | |             serde_json::to_string(&record).unwrap().as_bytes(),
[INFO] [stdout] 111 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let _ = write_to_file(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.65s
[INFO] running `Command { std: "docker" "inspect" "28603b0dbaf935f96100ea40d7fd4eb7ca6a15aee4b6cf01b393ea9d141b761f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28603b0dbaf935f96100ea40d7fd4eb7ca6a15aee4b6cf01b393ea9d141b761f", kill_on_drop: false }`
[INFO] [stdout] 28603b0dbaf935f96100ea40d7fd4eb7ca6a15aee4b6cf01b393ea9d141b761f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f4665d3fc8fafebbee6a119d2169a811820531251dc48a0e8dc0989e1997883
[INFO] running `Command { std: "docker" "start" "-a" "8f4665d3fc8fafebbee6a119d2169a811820531251dc48a0e8dc0989e1997883", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling tempfile v3.27.0
[INFO] [stderr]    Compiling gethostname v0.5.0
[INFO] [stderr]    Compiling stashlog v0.0.13 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `version`, `app_name`, and `file_path` are never read
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Config {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 26 |     version: i8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 27 |     app_name: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 28 |     file_path: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Record` is never constructed
[INFO] [stdout]   --> src/lib.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Record {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl Record {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 55 |     fn new(
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Logger` is never constructed
[INFO] [stdout]   --> src/lib.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | struct Logger {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `log_extra`, `log`, `info_extra`, and `info` are never used
[INFO] [stdout]    --> src/lib.rs:87:8
[INFO] [stdout]     |
[INFO] [stdout]  86 | impl Logger {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout]  87 |     fn log_extra(&self, level: Level, message: &str, extra_fields: &str) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn log(&self, level: Level, message: &str) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn info_extra(&self, message: &str, extra_fields: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub fn info(&self, message: &str) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_to_file` is never used
[INFO] [stdout]    --> src/lib.rs:122:4
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn write_to_file(file_name: &str, data: &[u8]) -> Result<(), Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `zulu_serializer` is never used
[INFO] [stdout]    --> src/lib.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn zulu_serializer<S>(datetime: &DateTime<Utc>, serializer: S) -> Result<S::Ok, S::Error>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 | /         write_to_file(
[INFO] [stdout] 96 | |             self.config.file_path.as_str(),
[INFO] [stdout] 97 | |             serde_json::to_string(&record).unwrap().as_bytes(),
[INFO] [stdout] 98 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let _ = write_to_file(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 | /         write_to_file(
[INFO] [stdout] 109 | |             self.config.file_path.as_str(),
[INFO] [stdout] 110 | |             serde_json::to_string(&record).unwrap().as_bytes(),
[INFO] [stdout] 111 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let _ = write_to_file(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 | /         write_to_file(
[INFO] [stdout] 96 | |             self.config.file_path.as_str(),
[INFO] [stdout] 97 | |             serde_json::to_string(&record).unwrap().as_bytes(),
[INFO] [stdout] 98 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let _ = write_to_file(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 | /         write_to_file(
[INFO] [stdout] 109 | |             self.config.file_path.as_str(),
[INFO] [stdout] 110 | |             serde_json::to_string(&record).unwrap().as_bytes(),
[INFO] [stdout] 111 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let _ = write_to_file(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `Command { std: "docker" "inspect" "8f4665d3fc8fafebbee6a119d2169a811820531251dc48a0e8dc0989e1997883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f4665d3fc8fafebbee6a119d2169a811820531251dc48a0e8dc0989e1997883", kill_on_drop: false }`
[INFO] [stdout] 8f4665d3fc8fafebbee6a119d2169a811820531251dc48a0e8dc0989e1997883
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 59c20512b9b3ca1260106bb99900852069bf55f3a20c73a56318473bf3d8389d
[INFO] running `Command { std: "docker" "start" "-a" "59c20512b9b3ca1260106bb99900852069bf55f3a20c73a56318473bf3d8389d", kill_on_drop: false }`
[INFO] [stderr] warning: fields `version`, `app_name`, and `file_path` are never read
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub struct Config {
[INFO] [stderr]    |            ------ fields in this struct
[INFO] [stderr] 26 |     version: i8,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 27 |     app_name: String,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 28 |     file_path: String,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Record` is never constructed
[INFO] [stderr]   --> src/lib.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 40 | struct Record {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/lib.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 54 | impl Record {
[INFO] [stderr]    | ----------- associated function in this implementation
[INFO] [stderr] 55 |     fn new(
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Logger` is never constructed
[INFO] [stderr]   --> src/lib.rs:82:8
[INFO] [stderr]    |
[INFO] [stderr] 82 | struct Logger {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `log_extra`, `log`, `info_extra`, and `info` are never used
[INFO] [stderr]    --> src/lib.rs:87:8
[INFO] [stderr]     |
[INFO] [stderr]  86 | impl Logger {
[INFO] [stderr]     | ----------- methods in this implementation
[INFO] [stderr]  87 |     fn log_extra(&self, level: Level, message: &str, extra_fields: &str) {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 100 |     fn log(&self, level: Level, message: &str) {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 114 |     pub fn info_extra(&self, message: &str, extra_fields: &str) {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 117 |     pub fn info(&self, message: &str) {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `write_to_file` is never used
[INFO] [stderr]    --> src/lib.rs:122:4
[INFO] [stderr]     |
[INFO] [stderr] 122 | fn write_to_file(file_name: &str, data: &[u8]) -> Result<(), Error> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `zulu_serializer` is never used
[INFO] [stderr]    --> src/lib.rs:140:4
[INFO] [stderr]     |
[INFO] [stderr] 140 | fn zulu_serializer<S>(datetime: &DateTime<Utc>, serializer: S) -> Result<S::Ok, S::Error>
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/lib.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 | /         write_to_file(
[INFO] [stderr] 96 | |             self.config.file_path.as_str(),
[INFO] [stderr] 97 | |             serde_json::to_string(&record).unwrap().as_bytes(),
[INFO] [stderr] 98 | |         );
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 95 |         let _ = write_to_file(
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/lib.rs:108:9
[INFO] [stderr]     |
[INFO] [stderr] 108 | /         write_to_file(
[INFO] [stderr] 109 | |             self.config.file_path.as_str(),
[INFO] [stderr] 110 | |             serde_json::to_string(&record).unwrap().as_bytes(),
[INFO] [stderr] 111 | |         );
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 108 |         let _ = write_to_file(
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `stashlog` (lib) generated 9 warnings
[INFO] [stderr] warning: `stashlog` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stashlog-4615bdce5c257f60)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_logs ... ok
[INFO] [stderr]    Doc-tests stashlog
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "59c20512b9b3ca1260106bb99900852069bf55f3a20c73a56318473bf3d8389d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59c20512b9b3ca1260106bb99900852069bf55f3a20c73a56318473bf3d8389d", kill_on_drop: false }`
[INFO] [stdout] 59c20512b9b3ca1260106bb99900852069bf55f3a20c73a56318473bf3d8389d
