[INFO] cloning repository https://github.com/kaiyuan-li/tracing_tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kaiyuan-li/tracing_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaiyuan-li%2Ftracing_tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaiyuan-li%2Ftracing_tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb8dc58a28b76636306c714ce8d77f227c71fda4
[INFO] testing kaiyuan-li/tracing_tutorial against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaiyuan-li%2Ftracing_tutorial" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kaiyuan-li/tracing_tutorial
[INFO] finished tweaking git repo https://github.com/kaiyuan-li/tracing_tutorial
[INFO] tweaked toml for git repo https://github.com/kaiyuan-li/tracing_tutorial written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kaiyuan-li/tracing_tutorial on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kaiyuan-li/tracing_tutorial 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-attributes v0.1.29
[INFO] [stderr]   Downloaded bumpalo v3.18.1
[INFO] [stderr]   Downloaded cc v1.2.26
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[INFO] [stdout] ab7f886cc150ae085b02cedbb3ad81df0d296d0172181a0e79a8db627d07dc2a
[INFO] running `Command { std: "docker" "start" "-a" "ab7f886cc150ae085b02cedbb3ad81df0d296d0172181a0e79a8db627d07dc2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab7f886cc150ae085b02cedbb3ad81df0d296d0172181a0e79a8db627d07dc2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab7f886cc150ae085b02cedbb3ad81df0d296d0172181a0e79a8db627d07dc2a", kill_on_drop: false }`
[INFO] [stdout] ab7f886cc150ae085b02cedbb3ad81df0d296d0172181a0e79a8db627d07dc2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75722572460a9095ca53edc279ed78f6d62927a4c93c418ee10346428b4f42d1
[INFO] running `Command { std: "docker" "start" "-a" "75722572460a9095ca53edc279ed78f6d62927a4c93c418ee10346428b4f42d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling slab v0.4.9
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[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling iana-time-zone v0.1.63
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling syn v2.0.102
[INFO] [stderr]    Compiling signal-hook-registry v1.4.5
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[INFO] [stderr]    Compiling futures-macro v0.3.31
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[INFO] [stderr]    Compiling tokio v1.45.1
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[INFO] [stderr]    Compiling tracing-subscriber v0.3.19
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling tracing_tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.43s
[INFO] running `Command { std: "docker" "inspect" "75722572460a9095ca53edc279ed78f6d62927a4c93c418ee10346428b4f42d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75722572460a9095ca53edc279ed78f6d62927a4c93c418ee10346428b4f42d1", kill_on_drop: false }`
[INFO] [stdout] 75722572460a9095ca53edc279ed78f6d62927a4c93c418ee10346428b4f42d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4009c959a23829adc95338edca246cae812b7f1f2eaffd1453605ca6cccdeeba
[INFO] running `Command { std: "docker" "start" "-a" "4009c959a23829adc95338edca246cae812b7f1f2eaffd1453605ca6cccdeeba", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing_tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `step11_advanced_layer_patterns`
[INFO] [stdout]  --> examples/step11_advanced_layer_patterns.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | //! Step 11: Advanced Layer Patterns
[INFO] [stdout]   |                                     ^ consider adding a `main` function to `examples/step11_advanced_layer_patterns.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error`
[INFO] [stdout]   --> examples/step6_advanced_filtering.rs:25:22
[INFO] [stdout]    |
[INFO] [stdout] 25 | use tracing::{debug, error, info, instrument, span, trace, warn, Level};
[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 import: `debug`
[INFO] [stdout]    --> examples/step6_advanced_filtering.rs:458:19
[INFO] [stdout]     |
[INFO] [stdout] 458 |     use tracing::{debug, info, instrument};
[INFO] [stdout]     |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tracing_tutorial` (example "step11_advanced_layer_patterns") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused imports: `debug`, `error`, `instrument`, `trace`, and `warn`
[INFO] [stdout]   --> examples/step6_filtering_playground.rs:24:15
[INFO] [stdout]    |
[INFO] [stdout] 24 | use tracing::{debug, error, info, instrument, trace, warn};
[INFO] [stdout]    |               ^^^^^  ^^^^^        ^^^^^^^^^^  ^^^^^  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `max_labels` is never read
[INFO] [stdout]    --> examples/step10_custom_metrics_layer.rs:515:5
[INFO] [stdout]     |
[INFO] [stdout] 510 | struct ProductionMetricsConfig {
[INFO] [stdout]     |        ----------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 515 |     max_labels: usize,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ProductionMetricsConfig` has a derived impl for the trait `Clone`, 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: field `custom_gauges` is never read
[INFO] [stdout]    --> examples/step10_custom_metrics_layer.rs:531:5
[INFO] [stdout]     |
[INFO] [stdout] 526 | struct ProductionMetrics {
[INFO] [stdout]     |        ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 531 |     custom_gauges: HashMap<String, f64>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]    --> examples/step3_advanced_context_patterns.rs:558:5
[INFO] [stdout]     |
[INFO] [stdout] 557 | struct UserData {
[INFO] [stdout]     |        -------- field in this struct
[INFO] [stdout] 558 |     id: String,
[INFO] [stdout]     |     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `UserData` 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] running `Command { std: "docker" "inspect" "4009c959a23829adc95338edca246cae812b7f1f2eaffd1453605ca6cccdeeba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4009c959a23829adc95338edca246cae812b7f1f2eaffd1453605ca6cccdeeba", kill_on_drop: false }`
[INFO] [stdout] 4009c959a23829adc95338edca246cae812b7f1f2eaffd1453605ca6cccdeeba