[INFO] cloning repository https://github.com/mhammond/tracing-as-log
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mhammond/tracing-as-log" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhammond%2Ftracing-as-log", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhammond%2Ftracing-as-log'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b354b3de8626a17dcff4fb4c49accbf4f7e6538
[INFO] testing mhammond/tracing-as-log against 1.98.0-beta.8+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhammond%2Ftracing-as-log" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mhammond/tracing-as-log
[INFO] finished tweaking git repo https://github.com/mhammond/tracing-as-log
[INFO] tweaked toml for git repo https://github.com/mhammond/tracing-as-log written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mhammond/tracing-as-log on toolchain 1.98.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mhammond/tracing-as-log 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" "+1.98.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex v1.10.3
[INFO] [stderr]   Downloaded syn v2.0.51
[INFO] [stderr]   Downloaded regex-automata v0.4.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca
[INFO] running `Command { std: "docker" "start" "7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling itoa v1.0.10
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling syn v2.0.51
[INFO] [stderr]    Compiling log_lib v0.1.0 (/opt/rustwide/workdir/log_lib)
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling regex-automata v0.4.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling regex v1.10.3
[INFO] [stderr]    Compiling first_lib v0.1.0 (/opt/rustwide/workdir/first_lib)
[INFO] [stderr]    Compiling second_lib v0.1.0 (/opt/rustwide/workdir/second_lib)
[INFO] [stderr]    Compiling tracing-subscriber v0.3.18
[INFO] [stderr]    Compiling app v0.1.0 (/opt/rustwide/workdir/app)
[INFO] [stdout] warning: unused import: `tracing_subscriber::prelude::*`
[INFO] [stdout]  --> app/src/burgers.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tracing_subscriber::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Record` is never constructed
[INFO] [stdout]   --> app/src/lib.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Record {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LogSink` is never used
[INFO] [stdout]   --> app/src/lib.rs:51:7
[INFO] [stdout]    |
[INFO] [stdout] 51 | trait LogSink: Send + Sync {
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `register` is never used
[INFO] [stdout]   --> app/src/lib.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | impl AppServicesLogger {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] 69 |     fn register(&self, target: String, level: Level, sink: Arc<dyn LogSink>) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `init_tracing_log` is never used
[INFO] [stdout]   --> app/src/lib.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn init_tracing_log() {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CustomLayer` is never constructed
[INFO] [stdout]  --> app/src/burgers.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct CustomLayer;
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PrintlnVisitor` is never constructed
[INFO] [stdout]   --> app/src/burgers.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct PrintlnVisitor;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LogEntry` is never constructed
[INFO] [stdout]   --> app/src/tracer.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct LogEntry {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `LOGGERS_BY_TARGET` is never used
[INFO] [stdout]   --> app/src/tracer.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | static LOGGERS_BY_TARGET: Lazy<RwLock<HashMap<String, LogEntry>>> = Lazy::new(|| {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `register_log_sink` is never used
[INFO] [stdout]   --> app/src/tracer.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn register_log_sink(target: String, level: crate::Level, sink: Arc<dyn LogSink>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimpleLogLayer` is never constructed
[INFO] [stdout]   --> app/src/tracer.rs:31:19
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub(crate) struct SimpleLogLayer;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `JsonVisitor` is never constructed
[INFO] [stdout]   --> app/src/tracer.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | struct JsonVisitor<'a>(&'a mut BTreeMap<String, serde_json::Value>);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 19.15s
[INFO] running `Command { std: "docker" "inspect" "7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling env_logger v0.10.2
[INFO] [stderr]    Compiling second_lib v0.1.0 (/opt/rustwide/workdir/second_lib)
[INFO] [stderr]    Compiling first_lib v0.1.0 (/opt/rustwide/workdir/first_lib)
[INFO] [stdout] warning: unused import: `tracing_subscriber::prelude::*`
[INFO] [stdout]  --> app/src/burgers.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tracing_subscriber::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Record` is never constructed
[INFO] [stdout]   --> app/src/lib.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Record {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LogSink` is never used
[INFO] [stdout]   --> app/src/lib.rs:51:7
[INFO] [stdout]    |
[INFO] [stdout] 51 | trait LogSink: Send + Sync {
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `register` is never used
[INFO] [stdout]   --> app/src/lib.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | impl AppServicesLogger {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] 69 |     fn register(&self, target: String, level: Level, sink: Arc<dyn LogSink>) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `init_tracing_log` is never used
[INFO] [stdout]   --> app/src/lib.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn init_tracing_log() {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CustomLayer` is never constructed
[INFO] [stdout]  --> app/src/burgers.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct CustomLayer;
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PrintlnVisitor` is never constructed
[INFO] [stdout]   --> app/src/burgers.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct PrintlnVisitor;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LogEntry` is never constructed
[INFO] [stdout]   --> app/src/tracer.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct LogEntry {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `LOGGERS_BY_TARGET` is never used
[INFO] [stdout]   --> app/src/tracer.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | static LOGGERS_BY_TARGET: Lazy<RwLock<HashMap<String, LogEntry>>> = Lazy::new(|| {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `register_log_sink` is never used
[INFO] [stdout]   --> app/src/tracer.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn register_log_sink(target: String, level: crate::Level, sink: Arc<dyn LogSink>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimpleLogLayer` is never constructed
[INFO] [stdout]   --> app/src/tracer.rs:31:19
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub(crate) struct SimpleLogLayer;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `JsonVisitor` is never constructed
[INFO] [stdout]   --> app/src/tracer.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | struct JsonVisitor<'a>(&'a mut BTreeMap<String, serde_json::Value>);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling app v0.1.0 (/opt/rustwide/workdir/app)
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> app/src/lib.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Record {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 46 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Record` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PrintlnVisitor` is never constructed
[INFO] [stdout]   --> app/src/burgers.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct PrintlnVisitor;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling log_lib v0.1.0 (/opt/rustwide/workdir/log_lib)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 3.82s
[INFO] running `Command { std: "docker" "inspect" "7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `tracing_subscriber::prelude::*`
[INFO] [stderr]  --> app/src/burgers.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use tracing_subscriber::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Record` is never constructed
[INFO] [stderr]   --> app/src/lib.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | struct Record {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `LogSink` is never used
[INFO] [stderr]   --> app/src/lib.rs:51:7
[INFO] [stderr]    |
[INFO] [stderr] 51 | trait LogSink: Send + Sync {
[INFO] [stderr]    |       ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `register` is never used
[INFO] [stderr]   --> app/src/lib.rs:69:8
[INFO] [stderr]    |
[INFO] [stderr] 68 | impl AppServicesLogger {
[INFO] [stderr]    | ---------------------- method in this implementation
[INFO] [stderr] 69 |     fn register(&self, target: String, level: Level, sink: Arc<dyn LogSink>) {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `init_tracing_log` is never used
[INFO] [stderr]   --> app/src/lib.rs:82:4
[INFO] [stderr]    |
[INFO] [stderr] 82 | fn init_tracing_log() {}
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `CustomLayer` is never constructed
[INFO] [stderr]  --> app/src/burgers.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct CustomLayer;
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `PrintlnVisitor` is never constructed
[INFO] [stderr]   --> app/src/burgers.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | struct PrintlnVisitor;
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `LogEntry` is never constructed
[INFO] [stderr]   --> app/src/tracer.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct LogEntry {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static `LOGGERS_BY_TARGET` is never used
[INFO] [stderr]   --> app/src/tracer.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | static LOGGERS_BY_TARGET: Lazy<RwLock<HashMap<String, LogEntry>>> = Lazy::new(|| {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `register_log_sink` is never used
[INFO] [stderr]   --> app/src/tracer.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn register_log_sink(target: String, level: crate::Level, sink: Arc<dyn LogSink>) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `SimpleLogLayer` is never constructed
[INFO] [stderr]   --> app/src/tracer.rs:31:19
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub(crate) struct SimpleLogLayer;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `JsonVisitor` is never constructed
[INFO] [stderr]   --> app/src/tracer.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 | struct JsonVisitor<'a>(&'a mut BTreeMap<String, serde_json::Value>);
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]   --> app/src/lib.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 43 | struct Record {
[INFO] [stderr]    |        ------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 46 |     name: String,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Record` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `app` (lib) generated 12 warnings (run `cargo fix --lib -p app` to apply 1 suggestion)
[INFO] [stderr] warning: `app` (lib test) generated 2 warnings (1 duplicate)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/app-05502ff41c1f9793)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_app ... FAILED
[INFO] [stdout] test burgers::tests::test_burgers ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::test_app stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::test_app' (815) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tracing-subscriber-0.3.18/src/util.rs:91:14:
[INFO] [stdout] failed to set global default subscriber: SetGlobalDefaultError("a global default trace dispatcher has already been set")
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b7b02ea06f1 - <<std[97b98282bc616a66]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[832e9a552fc17241]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5b7b02eb510a - core[832e9a552fc17241]::fmt::write
[INFO] [stdout]    2:     0x5b7b02ea4c5c - <alloc[3ecab9f82c41dc7d]::vec::Vec<u8> as std[97b98282bc616a66]::io::Write>::write_fmt
[INFO] [stdout]    3:     0x5b7b02e7ec56 - std[97b98282bc616a66]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5b7b02e98799 - std[97b98282bc616a66]::panicking::default_hook
[INFO] [stdout]    5:     0x5b7b02e283b0 - test[39766f3d73431624]::test_main_inner::<test[39766f3d73431624]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5b7b02e98952 - std[97b98282bc616a66]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5b7b02e7ed02 - std[97b98282bc616a66]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5b7b02e76629 - std[97b98282bc616a66]::sys::backtrace::__rust_end_short_backtrace::<std[97b98282bc616a66]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5b7b02e7f8fd - __rustc[e3d8617bb01b7f69]::rust_begin_unwind
[INFO] [stdout]   10:     0x5b7b02eb586c - core[832e9a552fc17241]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5b7b02eb5642 - core[832e9a552fc17241]::result::unwrap_failed
[INFO] [stdout]   12:     0x5b7b02e1079c - <core[832e9a552fc17241]::result::Result<(), tracing_subscriber[e45b2e4325034bcf]::util::TryInitError>>::expect
[INFO] [stdout]   13:     0x5b7b02e11986 - <app[d4122a0ac1ab62b8]::tests::test_app::{closure#0} as core[832e9a552fc17241]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   14:     0x5b7b02e1b6eb - test[39766f3d73431624]::__rust_begin_short_backtrace::<core[832e9a552fc17241]::result::Result<(), alloc[3ecab9f82c41dc7d]::string::String>, fn() -> core[832e9a552fc17241]::result::Result<(), alloc[3ecab9f82c41dc7d]::string::String>>
[INFO] [stdout]   15:     0x5b7b02e28d35 - test[39766f3d73431624]::run_test::{closure#0}
[INFO] [stdout]   16:     0x5b7b02e237e4 - std[97b98282bc616a66]::sys::backtrace::__rust_begin_short_backtrace::<test[39766f3d73431624]::run_test::{closure#1}, ()>
[INFO] [stdout]   17:     0x5b7b02e2be82 - <std[97b98282bc616a66]::thread::lifecycle::spawn_unchecked<test[39766f3d73431624]::run_test::{closure#1}, ()>::{closure#1} as core[832e9a552fc17241]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   18:     0x5b7b02e9ff4f - <std[97b98282bc616a66]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   19:     0x7ef03769d07a - <unknown>
[INFO] [stdout]   20:     0x7ef037730534 - clone
[INFO] [stdout]   21:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- burgers::tests::test_burgers stdout ----
[INFO] [stdout] Enter span: Id(1)
[INFO] [stdout] Enter span: Id(2)
[INFO] [stdout] Enter span: Id(3)
[INFO] [stdout] Got event!
[INFO] [stdout]   level=Level(Debug)
[INFO] [stdout]   target="first_lib"
[INFO] [stdout]   name="event first_lib/src/lib.rs:9"
[INFO] [stdout]   field=message
[INFO] [stdout] spans...
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=do_something
[INFO] [stdout]   target=app
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=second_lib_func
[INFO] [stdout]   target=second_lib
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=first_lib_func
[INFO] [stdout]   target=first_lib
[INFO] [stdout] Got event!
[INFO] [stdout]   level=Level(Error)
[INFO] [stdout]   target="first_lib"
[INFO] [stdout]   name="event first_lib/src/lib.rs:10"
[INFO] [stdout]   field=message
[INFO] [stdout] spans...
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=do_something
[INFO] [stdout]   target=app
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=second_lib_func
[INFO] [stdout]   target=second_lib
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=first_lib_func
[INFO] [stdout]   target=first_lib
[INFO] [stdout] Got event!
[INFO] [stdout]   level=Level(Error)
[INFO] [stdout]   target="error-reporter"
[INFO] [stdout]   name="event first_lib/src/lib.rs:11"
[INFO] [stdout]   field=message
[INFO] [stdout] spans...
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=do_something
[INFO] [stdout]   target=app
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=second_lib_func
[INFO] [stdout]   target=second_lib
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=first_lib_func
[INFO] [stdout]   target=first_lib
[INFO] [stdout] Got event!
[INFO] [stdout]   level=Level(Debug)
[INFO] [stdout]   target="log"
[INFO] [stdout]   name="log event"
[INFO] [stdout]   field=message
[INFO] [stdout]   field=log.target
[INFO] [stdout]   field=log.module_path
[INFO] [stdout]   field=log.file
[INFO] [stdout]   field=log.line
[INFO] [stdout] spans...
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=do_something
[INFO] [stdout]   target=app
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=second_lib_func
[INFO] [stdout]   target=second_lib
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=first_lib_func
[INFO] [stdout]   target=first_lib
[INFO] [stdout] Exit span: Id(3)
[INFO] [stdout] Got event!
[INFO] [stdout]   level=Level(Debug)
[INFO] [stdout]   target="second_lib"
[INFO] [stdout]   name="event second_lib/src/lib.rs:6"
[INFO] [stdout]   field=message
[INFO] [stdout] spans...
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=do_something
[INFO] [stdout]   target=app
[INFO] [stdout] an ancestor span
[INFO] [stdout]   name=second_lib_func
[INFO] [stdout]   target=second_lib
[INFO] [stdout] Exit span: Id(2)
[INFO] [stdout] Exit span: Id(1)
[INFO] [stdout] 
[INFO] [stdout] thread 'burgers::tests::test_burgers' (814) panicked at app/src/burgers.rs:93:9:
[INFO] [stdout] explicit panic!
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b7b02ea06f1 - <<std[97b98282bc616a66]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[832e9a552fc17241]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5b7b02eb510a - core[832e9a552fc17241]::fmt::write
[INFO] [stdout]    2:     0x5b7b02ea4c5c - <alloc[3ecab9f82c41dc7d]::vec::Vec<u8> as std[97b98282bc616a66]::io::Write>::write_fmt
[INFO] [stdout]    3:     0x5b7b02e7ec56 - std[97b98282bc616a66]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5b7b02e98799 - std[97b98282bc616a66]::panicking::default_hook
[INFO] [stdout]    5:     0x5b7b02e283b0 - test[39766f3d73431624]::test_main_inner::<test[39766f3d73431624]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5b7b02e98952 - std[97b98282bc616a66]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5b7b02e7ed34 - std[97b98282bc616a66]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5b7b02e76629 - std[97b98282bc616a66]::sys::backtrace::__rust_end_short_backtrace::<std[97b98282bc616a66]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5b7b02e7f8fd - __rustc[e3d8617bb01b7f69]::rust_begin_unwind
[INFO] [stdout]   10:     0x5b7b02eb586c - core[832e9a552fc17241]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5b7b02e11044 - app[d4122a0ac1ab62b8]::burgers::tests::test_burgers
[INFO] [stdout]   12:     0x5b7b02e119f6 - <app[d4122a0ac1ab62b8]::burgers::tests::test_burgers::{closure#0} as core[832e9a552fc17241]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   13:     0x5b7b02e1b6eb - test[39766f3d73431624]::__rust_begin_short_backtrace::<core[832e9a552fc17241]::result::Result<(), alloc[3ecab9f82c41dc7d]::string::String>, fn() -> core[832e9a552fc17241]::result::Result<(), alloc[3ecab9f82c41dc7d]::string::String>>
[INFO] [stdout]   14:     0x5b7b02e28d35 - test[39766f3d73431624]::run_test::{closure#0}
[INFO] [stdout]   15:     0x5b7b02e237e4 - std[97b98282bc616a66]::sys::backtrace::__rust_begin_short_backtrace::<test[39766f3d73431624]::run_test::{closure#1}, ()>
[INFO] [stdout]   16:     0x5b7b02e2be82 - <std[97b98282bc616a66]::thread::lifecycle::spawn_unchecked<test[39766f3d73431624]::run_test::{closure#1}, ()>::{closure#1} as core[832e9a552fc17241]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   17:     0x5b7b02e9ff4f - <std[97b98282bc616a66]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   18:     0x7ef03769d07a - <unknown>
[INFO] [stdout]   19:     0x7ef037730534 - clone
[INFO] [stdout]   20:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     burgers::tests::test_burgers
[INFO] [stdout]     tests::test_app
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `-p app --lib`
[INFO] running `Command { std: "docker" "inspect" "7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca", kill_on_drop: false }`
[INFO] [stdout] 7e578803c816f11646f9e136e764bba2711dcef9ca4e148681b8906a3e4b62ca
