[INFO] fetching crate json-to-usv 1.2.4...
[INFO] testing json-to-usv-1.2.4 against beta-2026-01-20 for beta-1.94-1
[INFO] extracting crate json-to-usv 1.2.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate json-to-usv 1.2.4
[INFO] finished tweaking crates.io crate json-to-usv 1.2.4
[INFO] tweaked toml for crates.io crate json-to-usv 1.2.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate json-to-usv 1.2.4 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 crates.io crate json-to-usv 1.2.4 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f88007fd6986d8827e47140f33b6eccde7e27165767eb5880dbbfa906d523fd6
[INFO] running `Command { std: "docker" "start" "-a" "f88007fd6986d8827e47140f33b6eccde7e27165767eb5880dbbfa906d523fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f88007fd6986d8827e47140f33b6eccde7e27165767eb5880dbbfa906d523fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f88007fd6986d8827e47140f33b6eccde7e27165767eb5880dbbfa906d523fd6", kill_on_drop: false }`
[INFO] [stdout] f88007fd6986d8827e47140f33b6eccde7e27165767eb5880dbbfa906d523fd6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4938c5e622dc87326d627ddea15895f7c3335d2a1912ca8cfdaea896726aebe6
[INFO] running `Command { std: "docker" "start" "-a" "4938c5e622dc87326d627ddea15895f7c3335d2a1912ca8cfdaea896726aebe6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling anstyle-query v1.0.2
[INFO] [stderr]    Compiling anstyle v1.0.6
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling clap_lex v0.7.0
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling usv v0.19.1
[INFO] [stderr]    Compiling anstyle-parse v0.2.3
[INFO] [stderr]    Compiling anstream v0.6.13
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling clap_builder v4.5.2
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling clap v4.5.4
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling env_filter v0.1.0
[INFO] [stderr]    Compiling env_logger v0.11.3
[INFO] [stderr]    Compiling json-to-usv v1.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `builder::styling::Style`
[INFO] [stdout]   --> src/app/clap.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | use clap::{builder::styling::Style, Arg};
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         _ => {}
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         Nest::Leaf(x) => {
[INFO] [stdout]    |         ------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 25 |         Nest::V1(units) => {
[INFO] [stdout]    |         --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 31 |         Nest::V2(records) => {
[INFO] [stdout]    |         ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 40 |         Nest::V3(groups) => {
[INFO] [stdout]    |         ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 67 |         _ => {}
[INFO] [stdout]    |         ^ ...and 1 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `test`, `log_level`, and `style` are never read
[INFO] [stdout]   --> src/app/args.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Args {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub(crate) test: bool,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub(crate) log_level: Option<::log::Level>,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub(crate) style: Style,
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Args` 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: unused `#[macro_use]` import
[INFO] [stdout]    --> src/main.rs:157:1
[INFO] [stdout]     |
[INFO] [stdout] 157 | #[macro_use]
[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: `builder::styling::Style`
[INFO] [stdout]   --> src/app/clap.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | use clap::{builder::styling::Style, Arg};
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `log_level` is never read
[INFO] [stdout]   --> src/app/args.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Args {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub(crate) log_level: Option<::log::Level>,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Args` 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.37s
[INFO] running `Command { std: "docker" "inspect" "4938c5e622dc87326d627ddea15895f7c3335d2a1912ca8cfdaea896726aebe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4938c5e622dc87326d627ddea15895f7c3335d2a1912ca8cfdaea896726aebe6", kill_on_drop: false }`
[INFO] [stdout] 4938c5e622dc87326d627ddea15895f7c3335d2a1912ca8cfdaea896726aebe6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 071a37ea97817bdb0cde2bdd0535b8a85edec78684f0b7ac0c1574dd45c83670
[INFO] running `Command { std: "docker" "start" "-a" "071a37ea97817bdb0cde2bdd0535b8a85edec78684f0b7ac0c1574dd45c83670", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]    Compiling half v2.4.0
[INFO] [stderr]    Compiling plotters-backend v0.3.5
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling plotters-svg v0.3.5
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling is-terminal v0.4.12
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling plotters v0.3.5
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling json-to-usv v1.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `builder::styling::Style`
[INFO] [stdout]   --> src/app/clap.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | use clap::{builder::styling::Style, Arg};
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         _ => {}
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         Nest::Leaf(x) => {
[INFO] [stdout]    |         ------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 25 |         Nest::V1(units) => {
[INFO] [stdout]    |         --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 31 |         Nest::V2(records) => {
[INFO] [stdout]    |         ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 40 |         Nest::V3(groups) => {
[INFO] [stdout]    |         ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 67 |         _ => {}
[INFO] [stdout]    |         ^ ...and 1 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `test`, `log_level`, and `style` are never read
[INFO] [stdout]   --> src/app/args.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Args {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub(crate) test: bool,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub(crate) log_level: Option<::log::Level>,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub(crate) style: Style,
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Args` 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] [stderr]    Compiling criterion v0.5.1
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/main.rs:157:1
[INFO] [stdout]     |
[INFO] [stdout] 157 | #[macro_use]
[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: `builder::styling::Style`
[INFO] [stdout]   --> src/app/clap.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | use clap::{builder::styling::Style, Arg};
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `log_level` is never read
[INFO] [stdout]   --> src/app/args.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Args {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub(crate) log_level: Option<::log::Level>,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Args` 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: unused `#[macro_use]` import
[INFO] [stdout]    --> src/main.rs:157:1
[INFO] [stdout]     |
[INFO] [stdout] 157 | #[macro_use]
[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: `builder::styling::Style`
[INFO] [stdout]   --> src/app/clap.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | use clap::{builder::styling::Style, Arg};
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `builder::styling::Style`
[INFO] [stdout]   --> src/app/clap.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | use clap::{builder::styling::Style, Arg};
[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 `log_level` is never read
[INFO] [stdout]   --> src/app/args.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Args {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub(crate) log_level: Option<::log::Level>,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Args` 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: unreachable pattern
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         _ => {}
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         Nest::Leaf(x) => {
[INFO] [stdout]    |         ------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 25 |         Nest::V1(units) => {
[INFO] [stdout]    |         --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 31 |         Nest::V2(records) => {
[INFO] [stdout]    |         ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 40 |         Nest::V3(groups) => {
[INFO] [stdout]    |         ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 67 |         _ => {}
[INFO] [stdout]    |         ^ ...and 1 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `test`, `log_level`, and `style` are never read
[INFO] [stdout]   --> src/app/args.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Args {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub(crate) test: bool,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub(crate) log_level: Option<::log::Level>,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub(crate) style: Style,
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Args` 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 16.12s
[INFO] running `Command { std: "docker" "inspect" "071a37ea97817bdb0cde2bdd0535b8a85edec78684f0b7ac0c1574dd45c83670", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "071a37ea97817bdb0cde2bdd0535b8a85edec78684f0b7ac0c1574dd45c83670", kill_on_drop: false }`
[INFO] [stdout] 071a37ea97817bdb0cde2bdd0535b8a85edec78684f0b7ac0c1574dd45c83670
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] bcbd8dc4582fd900752a97c376852416dcebcbc241246422e12d626bc772b9de
[INFO] running `Command { std: "docker" "start" "-a" "bcbd8dc4582fd900752a97c376852416dcebcbc241246422e12d626bc772b9de", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `builder::styling::Style`
[INFO] [stderr]   --> src/app/clap.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | use clap::{builder::styling::Style, Arg};
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/lib.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |         _ => {}
[INFO] [stderr]    |         ^ no value can reach this
[INFO] [stderr]    |
[INFO] [stderr] note: multiple earlier patterns match some of the same values
[INFO] [stderr]   --> src/lib.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         Nest::Leaf(x) => {
[INFO] [stderr]    |         ------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 25 |         Nest::V1(units) => {
[INFO] [stderr]    |         --------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 31 |         Nest::V2(records) => {
[INFO] [stderr]    |         ----------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 40 |         Nest::V3(groups) => {
[INFO] [stderr]    |         ---------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 67 |         _ => {}
[INFO] [stderr]    |         ^ ...and 1 other patterns collectively make this unreachable
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `test`, `log_level`, and `style` are never read
[INFO] [stderr]   --> src/app/args.rs:15:16
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub struct Args {
[INFO] [stderr]    |            ---- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 15 |     pub(crate) test: bool,
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 19 |     pub(crate) log_level: Option<::log::Level>,
[INFO] [stderr]    |                ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 23 |     pub(crate) style: Style,
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Args` 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: `json-to-usv` (lib) generated 3 warnings (run `cargo fix --lib -p json-to-usv` to apply 1 suggestion)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]    --> src/main.rs:157:1
[INFO] [stderr]     |
[INFO] [stderr] 157 | #[macro_use]
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `builder::styling::Style`
[INFO] [stderr]   --> src/app/clap.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | use clap::{builder::styling::Style, Arg};
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `log_level` is never read
[INFO] [stderr]   --> src/app/args.rs:19:16
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub struct Args {
[INFO] [stderr]    |            ---- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 19 |     pub(crate) log_level: Option<::log::Level>,
[INFO] [stderr]    |                ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Args` 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: `json-to-usv` (bin "json-to-usv") generated 3 warnings (run `cargo fix --bin "json-to-usv" -p json-to-usv` to apply 1 suggestion)
[INFO] [stderr] warning: `json-to-usv` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr] warning: `json-to-usv` (bin "json-to-usv" test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/json_to_usv-84788cb181d87c5d)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::json_array_dimension_1 ... ok
[INFO] [stdout] test tests::json_array_dimension_2 ... ok
[INFO] [stdout] test tests::json_array_dimension_3 ... ok
[INFO] [stdout] test tests::json_array_dimension_4 ... ok
[INFO] [stdout] test tests::json_boolean ... ok
[INFO] [stdout] test tests::json_number ... ok
[INFO] [stdout] test tests::json_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 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/json_to_usv-06fb33f170265d80)
[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/command.rs (/opt/rustwide/target/debug/deps/command-9667d116e6e2c280)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test command ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- command stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'command' (34) panicked at tests/common/mod.rs:70:6:
[INFO] [stdout] command: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x561385553792 - 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:     0x561385553792 - 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:     0x561385553792 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x561385553792 - <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:     0x5613855637fa - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5613855637fa - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x561385522176 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x561385522176 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x561385532bb9 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x561385532bb9 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x561385532a51 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5613854f3c2e - <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:     0x5613854f3c2e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x561385532e32 - <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:     0x561385532e32 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x561385532c78 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x56138552dd69 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x561385516d6d - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x56138556ab8c - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56138556a462 - core::result::unwrap_failed::h7d4c34940aded59c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x5613854d1ac6 - core::result::Result<T,E>::expect::hd7844031a2cd6649
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1185:23
[INFO] [stdout]   21:     0x5613854d3e42 - command::common::command_io_bytes_to_string::h435960aa910e82f7
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/common/mod.rs:70:6
[INFO] [stdout]   22:     0x5613854d3d8a - command::common::command_io_str_to_string::h07f159259d08367c
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/common/mod.rs:84:5
[INFO] [stdout]   23:     0x5613854d4153 - command::command::h44f5f4d9a9f8966e
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/command.rs:8:18
[INFO] [stdout]   24:     0x5613854d4257 - command::command::{{closure}}::h004acc4ea206ecbe
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/command.rs:6:13
[INFO] [stdout]   25:     0x5613854d0766 - core::ops::function::FnOnce::call_once::h66c13709c8dfbb3e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x5613854f3a2b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5613854f3a2b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   28:     0x5613855073fa - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   29:     0x5613855073fa - <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]   30:     0x5613855073fa - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   31:     0x5613855073fa - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   32:     0x5613855073fa - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   33:     0x5613855073fa - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   34:     0x5613855073fa - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   35:     0x5613854e1854 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   36:     0x5613854e1854 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   37:     0x5613854e5112 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   38:     0x5613854e5112 - <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]   39:     0x5613854e5112 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   40:     0x5613854e5112 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   41:     0x5613854e5112 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   42:     0x5613854e5112 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   43:     0x5613854e5112 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   44:     0x561385528fbf - <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]   45:     0x561385528fbf - 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]   46:     0x7877af4ddaa4 - <unknown>
[INFO] [stdout]   47:     0x7877af56aa64 - clone
[INFO] [stdout]   48:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     command
[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] [stderr] error: test failed, to rerun pass `--test command`
[INFO] running `Command { std: "docker" "inspect" "bcbd8dc4582fd900752a97c376852416dcebcbc241246422e12d626bc772b9de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcbd8dc4582fd900752a97c376852416dcebcbc241246422e12d626bc772b9de", kill_on_drop: false }`
[INFO] [stdout] bcbd8dc4582fd900752a97c376852416dcebcbc241246422e12d626bc772b9de
