[INFO] cloning repository https://github.com/Monksc/depth_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Monksc/depth_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonksc%2Fdepth_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonksc%2Fdepth_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c16a5b05c8752ae4d2fa4e8d628c23c0ee2bd2c
[INFO] testing Monksc/depth_tree 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%2FMonksc%2Fdepth_tree" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Monksc/depth_tree
[INFO] finished tweaking git repo https://github.com/Monksc/depth_tree
[INFO] tweaked toml for git repo https://github.com/Monksc/depth_tree written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Monksc/depth_tree 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/Monksc/depth_tree 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] a521f6bbd69983fd6ad5bd71f96a83f7d529c907d833306c1fa6a495c0b56a67
[INFO] running `Command { std: "docker" "start" "-a" "a521f6bbd69983fd6ad5bd71f96a83f7d529c907d833306c1fa6a495c0b56a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a521f6bbd69983fd6ad5bd71f96a83f7d529c907d833306c1fa6a495c0b56a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a521f6bbd69983fd6ad5bd71f96a83f7d529c907d833306c1fa6a495c0b56a67", kill_on_drop: false }`
[INFO] [stdout] a521f6bbd69983fd6ad5bd71f96a83f7d529c907d833306c1fa6a495c0b56a67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] e73eafbd46e7e542f2983a647591f9be34050eadc20907b806967e4255d37b21
[INFO] running `Command { std: "docker" "start" "-a" "e73eafbd46e7e542f2983a647591f9be34050eadc20907b806967e4255d37b21", kill_on_drop: false }`
[INFO] [stderr] warning: depth_tree v0.1.0 (/opt/rustwide/workdir) ignoring invalid dependency `rtree` which is missing a lib target
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling unicode-general-category v0.4.0
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling roxmltree v0.20.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling float_next_after v1.0.0
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling ttf-parser v0.15.2
[INFO] [stderr]    Compiling ttf-parser v0.17.1
[INFO] [stderr]    Compiling unicode-script v0.5.7
[INFO] [stderr]    Compiling unicode-bidi-mirroring v0.1.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling unicode-ccc v0.1.2
[INFO] [stderr]    Compiling xmlparser v0.13.6
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling robust v1.2.0
[INFO] [stderr]    Compiling i_tree v0.16.0
[INFO] [stderr]    Compiling fontconfig-parser v0.5.8
[INFO] [stderr]    Compiling bytemuck v1.24.0
[INFO] [stderr]    Compiling i_key_sort v0.6.0
[INFO] [stderr]    Compiling data-url v0.1.1
[INFO] [stderr]    Compiling flate2 v1.1.4
[INFO] [stderr]    Compiling roxmltree v0.14.1
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling svgtypes v0.8.2
[INFO] [stderr]    Compiling simplecss v0.2.2
[INFO] [stderr]    Compiling kurbo v0.8.3
[INFO] [stderr]    Compiling pico-args v0.5.0
[INFO] [stderr]    Compiling memmap2 v0.5.10
[INFO] [stderr]    Compiling xmlwriter v0.1.0
[INFO] [stderr]    Compiling i_float v1.15.0
[INFO] [stderr]    Compiling geographiclib-rs v0.2.5
[INFO] [stderr]    Compiling unicode-vo v0.1.0
[INFO] [stderr]    Compiling rctree v0.4.0
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling i_shape v1.14.0
[INFO] [stderr]    Compiling svg v0.18.0
[INFO] [stderr]    Compiling rustybuzz v0.5.1
[INFO] [stderr]    Compiling fontdb v0.9.3
[INFO] [stderr]    Compiling euclid v0.22.11
[INFO] [stderr]    Compiling rstar v0.12.2
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling earcutr v0.4.3
[INFO] [stderr]    Compiling spade v2.15.0
[INFO] [stderr]    Compiling lyon_geom v1.0.17
[INFO] [stderr]    Compiling geo-types v0.7.17
[INFO] [stderr]    Compiling i_overlay v4.0.6
[INFO] [stderr]    Compiling lyon_path v1.0.16
[INFO] [stderr]    Compiling usvg v0.23.0
[INFO] [stderr]    Compiling lyon_tessellation v1.0.16
[INFO] [stderr]    Compiling lyon_algorithms v1.0.16
[INFO] [stderr]    Compiling geo v0.31.0
[INFO] [stderr]    Compiling lyon v1.0.16
[INFO] [stderr]    Compiling depth_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tree.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn iter(&self) -> TreeNodeDepthIterator<T> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn iter(&self) -> TreeNodeDepthIterator<'_, T> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/tree.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn iter(&self) -> TreeNodeDepthIterator<T> {
[INFO] [stdout]     |             ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |             |
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn iter(&self) -> TreeNodeDepthIterator<'_, T> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.08s
[INFO] running `Command { std: "docker" "inspect" "e73eafbd46e7e542f2983a647591f9be34050eadc20907b806967e4255d37b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e73eafbd46e7e542f2983a647591f9be34050eadc20907b806967e4255d37b21", kill_on_drop: false }`
[INFO] [stdout] e73eafbd46e7e542f2983a647591f9be34050eadc20907b806967e4255d37b21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] af997b8d0dab799e5cd1bffa25dac580ddc8b88cb2d8ca9dbf37716a22ac2b80
[INFO] running `Command { std: "docker" "start" "-a" "af997b8d0dab799e5cd1bffa25dac580ddc8b88cb2d8ca9dbf37716a22ac2b80", kill_on_drop: false }`
[INFO] [stderr] warning: depth_tree v0.1.0 (/opt/rustwide/workdir) ignoring invalid dependency `rtree` which is missing a lib target
[INFO] [stderr]    Compiling depth_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tree.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn iter(&self) -> TreeNodeDepthIterator<T> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn iter(&self) -> TreeNodeDepthIterator<'_, T> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/tree.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn iter(&self) -> TreeNodeDepthIterator<T> {
[INFO] [stdout]     |             ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |             |
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn iter(&self) -> TreeNodeDepthIterator<'_, T> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tree.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn iter(&self) -> TreeNodeDepthIterator<T> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn iter(&self) -> TreeNodeDepthIterator<'_, T> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/tree.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn iter(&self) -> TreeNodeDepthIterator<T> {
[INFO] [stdout]     |             ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |             |
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn iter(&self) -> TreeNodeDepthIterator<'_, T> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "af997b8d0dab799e5cd1bffa25dac580ddc8b88cb2d8ca9dbf37716a22ac2b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af997b8d0dab799e5cd1bffa25dac580ddc8b88cb2d8ca9dbf37716a22ac2b80", kill_on_drop: false }`
[INFO] [stdout] af997b8d0dab799e5cd1bffa25dac580ddc8b88cb2d8ca9dbf37716a22ac2b80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 6baf6effba21e9a2919375fd45f00e60012b42a7259f7ae0b4e26c2d2e58d63d
[INFO] running `Command { std: "docker" "start" "-a" "6baf6effba21e9a2919375fd45f00e60012b42a7259f7ae0b4e26c2d2e58d63d", kill_on_drop: false }`
[INFO] [stderr] warning: depth_tree v0.1.0 (/opt/rustwide/workdir) ignoring invalid dependency `rtree` which is missing a lib target
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/tree.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn iter(&self) -> TreeNodeDepthIterator<T> {
[INFO] [stderr]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn iter(&self) -> TreeNodeDepthIterator<'_, T> {
[INFO] [stderr]    |                                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/tree.rs:183:13
[INFO] [stderr]     |
[INFO] [stderr] 183 |     fn iter(&self) -> TreeNodeDepthIterator<T> {
[INFO] [stderr]     |             ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |             |
[INFO] [stderr]     |             the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 183 |     fn iter(&self) -> TreeNodeDepthIterator<'_, T> {
[INFO] [stderr]     |                                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: `depth_tree` (lib) generated 2 warnings (run `cargo fix --lib -p depth_tree` to apply 2 suggestions)
[INFO] [stderr] warning: `depth_tree` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/depth_tree-7ae7139935a9f924)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tree::tests::it_works ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tree::tests::it_works stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tree::tests::it_works' (26) panicked at src/tree.rs:394:46:
[INFO] [stdout] called `Option::unwrap()` on a `None` value
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56da76ba0142 - 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:     0x56da76ba0142 - 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:     0x56da76ba0142 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56da76ba0142 - <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:     0x56da76bb206a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56da76bb206a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x56da76b6e1b6 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x56da76b6e1b6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x56da76b7f219 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56da76b7f219 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x56da76b7f0b1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x56da76b2e86e - <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:     0x56da76b2e86e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x56da76b7f492 - <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:     0x56da76b7f492 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x56da76b7f30a - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:691:13
[INFO] [stdout]   16:     0x56da76b7a179 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56da76b620fd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x56da76bbb5bc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56da76bbb582 - core::panicking::panic::h6519d2e94a76dd19
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x56da76bbaa19 - core::option::unwrap_failed::ha98236786820a324
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/option.rs:2199:5
[INFO] [stdout]   21:     0x56da7682290d - core::option::Option<T>::unwrap::h9eaeab9cffaaf416
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/option.rs:1016:21
[INFO] [stdout]   22:     0x56da7682290d - depth_tree::tree::tests::it_works::h959bb69eb00b996a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tree.rs:394:46
[INFO] [stdout]   23:     0x56da76822b67 - depth_tree::tree::tests::it_works::{{closure}}::h7459ba67d7b423e4
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tree.rs:392:18
[INFO] [stdout]   24:     0x56da7680c256 - core::ops::function::FnOnce::call_once::h84c5d8c34cffe48f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x56da76b2e66b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x56da76b2e66b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   27:     0x56da76b4203a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   28:     0x56da76b4203a - <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]   29:     0x56da76b4203a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   30:     0x56da76b4203a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   31:     0x56da76b4203a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x56da76b4203a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   33:     0x56da76b4203a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   34:     0x56da76b1c494 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   35:     0x56da76b1c494 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   36:     0x56da76b1fd52 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   37:     0x56da76b1fd52 - <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]   38:     0x56da76b1fd52 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   39:     0x56da76b1fd52 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   40:     0x56da76b1fd52 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x56da76b1fd52 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   42:     0x56da76b1fd52 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x56da76b7537f - <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]   44:     0x56da76b7537f - 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]   45:     0x706facf30aa4 - <unknown>
[INFO] [stdout]   46:     0x706facfbda64 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tree::tests::it_works
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "6baf6effba21e9a2919375fd45f00e60012b42a7259f7ae0b4e26c2d2e58d63d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6baf6effba21e9a2919375fd45f00e60012b42a7259f7ae0b4e26c2d2e58d63d", kill_on_drop: false }`
[INFO] [stdout] 6baf6effba21e9a2919375fd45f00e60012b42a7259f7ae0b4e26c2d2e58d63d
