[INFO] cloning repository https://github.com/JonathanWoollett-Light/testing-tracing-instrumentation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JonathanWoollett-Light/testing-tracing-instrumentation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonathanWoollett-Light%2Ftesting-tracing-instrumentation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonathanWoollett-Light%2Ftesting-tracing-instrumentation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 05d5a93b7f519c5ac2af4dddac4b5dc98b4b8d44
[INFO] testing JonathanWoollett-Light/testing-tracing-instrumentation against beta-2026-01-20 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonathanWoollett-Light%2Ftesting-tracing-instrumentation" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/JonathanWoollett-Light/testing-tracing-instrumentation
[INFO] finished tweaking git repo https://github.com/JonathanWoollett-Light/testing-tracing-instrumentation
[INFO] tweaked toml for git repo https://github.com/JonathanWoollett-Light/testing-tracing-instrumentation written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/JonathanWoollett-Light/testing-tracing-instrumentation on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/JonathanWoollett-Light/testing-tracing-instrumentation 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" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 145255145c8b3a8d1836b1977e467e1570c8e906535c0a7945983925915b549f
[INFO] running `Command { std: "docker" "start" "-a" "145255145c8b3a8d1836b1977e467e1570c8e906535c0a7945983925915b549f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "145255145c8b3a8d1836b1977e467e1570c8e906535c0a7945983925915b549f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "145255145c8b3a8d1836b1977e467e1570c8e906535c0a7945983925915b549f", kill_on_drop: false }`
[INFO] [stdout] 145255145c8b3a8d1836b1977e467e1570c8e906535c0a7945983925915b549f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b5914c0353fb82835831b96fdf540cb8687dbf2ddda98972eebece95c4ddfe4
[INFO] running `Command { std: "docker" "start" "-a" "9b5914c0353fb82835831b96fdf540cb8687dbf2ddda98972eebece95c4ddfe4", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling tracing-core v0.1.31
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling tracing-log v0.1.3
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]    Compiling tracing-subscriber v0.3.17
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling tracing v0.1.37
[INFO] [stderr]    Compiling tracing-flame v0.2.0
[INFO] [stderr]    Compiling testing-tracing-instrumentation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `PathBuf`, `Path`, `env`, and `fs::File`
[INFO] [stdout]  --> src/bin/one.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     env,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     io::{BufReader, BufWriter, Write},
[INFO] [stdout]   |          ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 5 |     path::{Path, PathBuf},
[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: `Level` and `span`
[INFO] [stdout]  --> src/bin/one.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tracing::{instrument, span, Level};
[INFO] [stdout]   |                           ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/bin/one.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 |     io::{BufReader, BufWriter, Write},
[INFO] [stdout]   |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `PathBuf`, `Path`, `env`, and `fs::File`
[INFO] [stdout]  --> src/bin/two.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     env,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     io::{BufReader, BufWriter},
[INFO] [stdout]   |          ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 5 |     path::{Path, PathBuf},
[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: `Level` and `span`
[INFO] [stdout]  --> src/bin/two.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tracing::{instrument, span, Level};
[INFO] [stdout]   |                           ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.22s
[INFO] running `Command { std: "docker" "inspect" "9b5914c0353fb82835831b96fdf540cb8687dbf2ddda98972eebece95c4ddfe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b5914c0353fb82835831b96fdf540cb8687dbf2ddda98972eebece95c4ddfe4", kill_on_drop: false }`
[INFO] [stdout] 9b5914c0353fb82835831b96fdf540cb8687dbf2ddda98972eebece95c4ddfe4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 258948b26debb4c17672ba3787f7b1f87a85e02147a21ebfed947514ff66d804
[INFO] running `Command { std: "docker" "start" "-a" "258948b26debb4c17672ba3787f7b1f87a85e02147a21ebfed947514ff66d804", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling rustix v0.38.8
[INFO] [stderr]    Compiling bitflags v2.3.3
[INFO] [stderr]    Compiling linux-raw-sys v0.4.5
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling anstyle v1.0.1
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling clap_lex v0.5.0
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling bytemuck v1.13.1
[INFO] [stderr]    Compiling anstyle-parse v0.2.1
[INFO] [stderr]    Compiling itoa v1.0.9
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling hashbrown v0.14.0
[INFO] [stderr]    Compiling tracing-core v0.1.31
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling rgb v0.8.36
[INFO] [stderr]    Compiling quick-xml v0.26.0
[INFO] [stderr]    Compiling env_logger v0.10.0
[INFO] [stderr]    Compiling str_stack v0.1.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling num-format v0.4.4
[INFO] [stderr]    Compiling tracing-log v0.1.3
[INFO] [stderr]    Compiling dashmap v5.5.0
[INFO] [stderr]    Compiling uuid v1.4.1
[INFO] [stderr]    Compiling tracing-subscriber v0.3.17
[INFO] [stderr]    Compiling is-terminal v0.4.9
[INFO] [stderr]    Compiling anstream v0.3.2
[INFO] [stderr]    Compiling clap_builder v4.3.21
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling clap_derive v4.3.12
[INFO] [stderr]    Compiling tracing v0.1.37
[INFO] [stderr]    Compiling tracing-flame v0.2.0
[INFO] [stderr]    Compiling testing-tracing-instrumentation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `PathBuf`, `Path`, `env`, and `fs::File`
[INFO] [stdout]  --> src/bin/one.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     env,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     io::{BufReader, BufWriter, Write},
[INFO] [stdout]   |          ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 5 |     path::{Path, PathBuf},
[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: `Level` and `span`
[INFO] [stdout]  --> src/bin/one.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tracing::{instrument, span, Level};
[INFO] [stdout]   |                           ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `PathBuf`, `Path`, `env`, and `fs::File`
[INFO] [stdout]  --> src/bin/two.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     env,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     io::{BufReader, BufWriter},
[INFO] [stdout]   |          ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 5 |     path::{Path, PathBuf},
[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: `Level` and `span`
[INFO] [stdout]  --> src/bin/two.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tracing::{instrument, span, Level};
[INFO] [stdout]   |                           ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/bin/one.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 |     io::{BufReader, BufWriter, Write},
[INFO] [stdout]   |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clap v4.3.21
[INFO] [stderr]    Compiling inferno v0.11.15
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `PathBuf`, `Path`, `env`, and `fs::File`
[INFO] [stdout]  --> src/bin/one.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     env,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     io::{BufReader, BufWriter, Write},
[INFO] [stdout]   |          ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 5 |     path::{Path, PathBuf},
[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: `Level` and `span`
[INFO] [stdout]  --> src/bin/one.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tracing::{instrument, span, Level};
[INFO] [stdout]   |                           ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/bin/one.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 |     io::{BufReader, BufWriter, Write},
[INFO] [stdout]   |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `PathBuf`, `Path`, `env`, and `fs::File`
[INFO] [stdout]  --> src/bin/two.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     env,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     io::{BufReader, BufWriter},
[INFO] [stdout]   |          ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 5 |     path::{Path, PathBuf},
[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: `Level` and `span`
[INFO] [stdout]  --> src/bin/two.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tracing::{instrument, span, Level};
[INFO] [stdout]   |                           ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/integration_tests.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     let mut flamegraph = OpenOptions::new()
[INFO] [stdout]     |         ----^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.40s
[INFO] running `Command { std: "docker" "inspect" "258948b26debb4c17672ba3787f7b1f87a85e02147a21ebfed947514ff66d804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "258948b26debb4c17672ba3787f7b1f87a85e02147a21ebfed947514ff66d804", kill_on_drop: false }`
[INFO] [stdout] 258948b26debb4c17672ba3787f7b1f87a85e02147a21ebfed947514ff66d804
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6d3bfcca1077426cf59d4d1cf5473994405cae7880cc25935a0ae1ae96de7e1f
[INFO] running `Command { std: "docker" "start" "-a" "6d3bfcca1077426cf59d4d1cf5473994405cae7880cc25935a0ae1ae96de7e1f", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `BufReader`, `BufWriter`, `PathBuf`, `Path`, `env`, and `fs::File`
[INFO] [stderr]  --> src/bin/one.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     env,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 3 |     fs::File,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 4 |     io::{BufReader, BufWriter, Write},
[INFO] [stderr]   |          ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 5 |     path::{Path, PathBuf},
[INFO] [stderr]   |            ^^^^  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Level` and `span`
[INFO] [stderr]  --> src/bin/one.rs:9:27
[INFO] [stderr]   |
[INFO] [stderr] 9 | use tracing::{instrument, span, Level};
[INFO] [stderr]   |                           ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/bin/one.rs:4:32
[INFO] [stderr]   |
[INFO] [stderr] 4 |     io::{BufReader, BufWriter, Write},
[INFO] [stderr]   |                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufReader`, `BufWriter`, `PathBuf`, `Path`, `env`, and `fs::File`
[INFO] [stderr]  --> src/bin/two.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     env,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 3 |     fs::File,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 4 |     io::{BufReader, BufWriter},
[INFO] [stderr]   |          ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 5 |     path::{Path, PathBuf},
[INFO] [stderr]   |            ^^^^  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Level` and `span`
[INFO] [stderr]  --> src/bin/two.rs:9:27
[INFO] [stderr]   |
[INFO] [stderr] 9 | use tracing::{instrument, span, Level};
[INFO] [stderr]   |                           ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `testing-tracing-instrumentation` (bin "one") generated 3 warnings (run `cargo fix --bin "one" -p testing-tracing-instrumentation` to apply 2 suggestions)
[INFO] [stderr] warning: `testing-tracing-instrumentation` (bin "two") generated 2 warnings (run `cargo fix --bin "two" -p testing-tracing-instrumentation` to apply 2 suggestions)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/integration_tests.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 |     let mut flamegraph = OpenOptions::new()
[INFO] [stderr]     |         ----^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `testing-tracing-instrumentation` (bin "two" test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: `testing-tracing-instrumentation` (bin "one" test) generated 3 warnings (3 duplicates)
[INFO] [stderr] warning: `testing-tracing-instrumentation` (test "integration_tests") generated 1 warning (run `cargo fix --test "integration_tests" -p testing-tracing-instrumentation` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/bin/one.rs (/opt/rustwide/target/debug/deps/one-ab392863b88df94b)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/testing_tracing_instrumentation-0dc38322a30af577)
[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] [stderr]      Running unittests src/bin/two.rs (/opt/rustwide/target/debug/deps/two-b27602535b1da177)
[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] [stderr]      Running tests/integration_tests.rs (/opt/rustwide/target/debug/deps/integration_tests-34044abae072b5df)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test pair ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- pair stdout ----
[INFO] [stdout] run_dir: ./tmp/9ebfb0ed-b5b8-42e0-8596-de534ea22863
[INFO] [stdout] 
[INFO] [stdout] thread 'pair' (28) panicked at tests/integration_tests.rs:76:26:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x62a6c807b092 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x62a6c807b092 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x62a6c807b092 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x62a6c807b092 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x62a6c808ba4a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x62a6c808ba4a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x62a6c8049d46 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x62a6c8049d46 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x62a6c805a4c9 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x62a6c805a4c9 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x62a6c805a361 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x62a6c801ab3e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x62a6c801ab3e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x62a6c805a742 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x62a6c805a742 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x62a6c805a588 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x62a6c8055ab9 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr] error: test failed, to rerun pass `--test integration_tests`
[INFO] [stdout]   17:     0x62a6c803dfed - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x62a6c8092f6c - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x62a6c8092742 - core::result::unwrap_failed::h7d4c34940aded59c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x62a6c7fb8e72 - core::result::Result<T,E>::unwrap::h8a9bca25babea287
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x62a6c7fb8e72 - integration_tests::pair::ha045307e67e493c3
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/integration_tests.rs:76:26
[INFO] [stdout]   22:     0x62a6c7fba217 - integration_tests::pair::{{closure}}::h766c878055748e1e
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/integration_tests.rs:73:10
[INFO] [stdout]   23:     0x62a6c7fa02a6 - core::ops::function::FnOnce::call_once::h356f8a29f6c4f1d7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x62a6c801a93b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x62a6c801a93b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x62a6c802e30a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x62a6c802e30a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x62a6c802e30a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x62a6c802e30a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x62a6c802e30a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x62a6c802e30a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x62a6c802e30a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x62a6c8008764 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x62a6c8008764 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x62a6c800c022 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x62a6c800c022 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x62a6c800c022 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x62a6c800c022 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x62a6c800c022 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x62a6c800c022 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x62a6c800c022 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x62a6c8050bbf - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x62a6c8050bbf - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x708683de2aa4 - <unknown>
[INFO] [stdout]   45:     0x708683e6fa64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     pair
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6d3bfcca1077426cf59d4d1cf5473994405cae7880cc25935a0ae1ae96de7e1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d3bfcca1077426cf59d4d1cf5473994405cae7880cc25935a0ae1ae96de7e1f", kill_on_drop: false }`
[INFO] [stdout] 6d3bfcca1077426cf59d4d1cf5473994405cae7880cc25935a0ae1ae96de7e1f
