[INFO] fetching crate spruce 0.3.0...
[INFO] testing spruce-0.3.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate spruce 0.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate spruce 0.3.0
[INFO] finished tweaking crates.io crate spruce 0.3.0
[INFO] tweaked toml for crates.io crate spruce 0.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate spruce 0.3.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate spruce 0.3.0 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-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47b58d11fa0e5f7b815bb8ddaa1e8e203131d9d12d7a62ea49c37d8fd4445ceb
[INFO] running `Command { std: "docker" "start" "-a" "47b58d11fa0e5f7b815bb8ddaa1e8e203131d9d12d7a62ea49c37d8fd4445ceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47b58d11fa0e5f7b815bb8ddaa1e8e203131d9d12d7a62ea49c37d8fd4445ceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47b58d11fa0e5f7b815bb8ddaa1e8e203131d9d12d7a62ea49c37d8fd4445ceb", kill_on_drop: false }`
[INFO] [stdout] 47b58d11fa0e5f7b815bb8ddaa1e8e203131d9d12d7a62ea49c37d8fd4445ceb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c4fdb4a623b3be025e510e71a57cd59d40f995a473cbbff23ba9870c0650a71
[INFO] running `Command { std: "docker" "start" "-a" "0c4fdb4a623b3be025e510e71a57cd59d40f995a473cbbff23ba9870c0650a71", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling libc v0.2.64
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling linked-hash-map v0.5.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling serde_test v0.8.23
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling derive_builder v0.8.0
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling tint v1.0.1
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling directories v1.0.2
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling serde_json v1.0.41
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde-hjson v0.8.2
[INFO] [stderr]    Compiling serde-value v0.5.3
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling config v0.9.3
[INFO] [stderr]    Compiling darling_core v0.10.1
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]    Compiling darling_macro v0.10.1
[INFO] [stderr]    Compiling structopt v0.3.3
[INFO] [stderr]    Compiling darling v0.10.1
[INFO] [stderr]    Compiling derive_builder_core v0.8.0
[INFO] [stderr]    Compiling ptree v0.2.1
[INFO] [stderr]    Compiling spruce v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `indent_size` is never read
[INFO] [stdout]   --> src/config.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct RunningConfig {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 18 |     pub max_depth: Option<usize>,
[INFO] [stdout] 19 |     pub indent_size: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RunningConfig` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `size_style` is never read
[INFO] [stdout]   --> src/config.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Config {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub size_style: Style,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Config` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/usage_tree.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn data(&self) -> &Data {
[INFO] [stdout]    |                 ^^^^^     ^^^^^
[INFO] [stdout]    |                 |         ||
[INFO] [stdout]    |                 |         |the same lifetime is hidden here
[INFO] [stdout]    |                 |         the same lifetime is elided here
[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] 29 |     pub fn data(&self) -> &Data<'_> {
[INFO] [stdout]    |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/usage_tree.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn children(&self) -> Cow<[Self::Child]> {
[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] 83 |     fn children(&self) -> Cow<'_, [Self::Child]> {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.11s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "0c4fdb4a623b3be025e510e71a57cd59d40f995a473cbbff23ba9870c0650a71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c4fdb4a623b3be025e510e71a57cd59d40f995a473cbbff23ba9870c0650a71", kill_on_drop: false }`
[INFO] [stdout] 0c4fdb4a623b3be025e510e71a57cd59d40f995a473cbbff23ba9870c0650a71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b9f5e313ac9302e0d4088b82e0ae4ead27b4214c6425abda18b7202917d8414
[INFO] running `Command { std: "docker" "start" "-a" "9b9f5e313ac9302e0d4088b82e0ae4ead27b4214c6425abda18b7202917d8414", kill_on_drop: false }`
[INFO] [stderr]    Compiling spruce v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `indent_size` is never read
[INFO] [stdout]   --> src/config.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct RunningConfig {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 18 |     pub max_depth: Option<usize>,
[INFO] [stdout] 19 |     pub indent_size: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RunningConfig` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `size_style` is never read
[INFO] [stdout]   --> src/config.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Config {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub size_style: Style,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Config` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/usage_tree.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn data(&self) -> &Data {
[INFO] [stdout]    |                 ^^^^^     ^^^^^
[INFO] [stdout]    |                 |         ||
[INFO] [stdout]    |                 |         |the same lifetime is hidden here
[INFO] [stdout]    |                 |         the same lifetime is elided here
[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] 29 |     pub fn data(&self) -> &Data<'_> {
[INFO] [stdout]    |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/usage_tree.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn children(&self) -> Cow<[Self::Child]> {
[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] 83 |     fn children(&self) -> Cow<'_, [Self::Child]> {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.76s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "9b9f5e313ac9302e0d4088b82e0ae4ead27b4214c6425abda18b7202917d8414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b9f5e313ac9302e0d4088b82e0ae4ead27b4214c6425abda18b7202917d8414", kill_on_drop: false }`
[INFO] [stdout] 9b9f5e313ac9302e0d4088b82e0ae4ead27b4214c6425abda18b7202917d8414
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 31c907b161a7a72d251eadd15bf920f1f61dbad3aab679db0e26040544824fb8
[INFO] running `Command { std: "docker" "start" "-a" "31c907b161a7a72d251eadd15bf920f1f61dbad3aab679db0e26040544824fb8", kill_on_drop: false }`
[INFO] [stderr] warning: field `indent_size` is never read
[INFO] [stderr]   --> src/config.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub struct RunningConfig {
[INFO] [stderr]    |            ------------- field in this struct
[INFO] [stderr] 18 |     pub max_depth: Option<usize>,
[INFO] [stderr] 19 |     pub indent_size: usize,
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `RunningConfig` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `size_style` is never read
[INFO] [stderr]   --> src/config.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub struct Config {
[INFO] [stderr]    |            ------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 31 |     pub size_style: Style,
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Config` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/usage_tree.rs:29:17
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn data(&self) -> &Data {
[INFO] [stderr]    |                 ^^^^^     ^^^^^
[INFO] [stderr]    |                 |         ||
[INFO] [stderr]    |                 |         |the same lifetime is hidden here
[INFO] [stderr]    |                 |         the same lifetime is elided here
[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] 29 |     pub fn data(&self) -> &Data<'_> {
[INFO] [stderr]    |                                ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/usage_tree.rs:83:17
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn children(&self) -> Cow<[Self::Child]> {
[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] 83 |     fn children(&self) -> Cow<'_, [Self::Child]> {
[INFO] [stderr]    |                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: `spruce` (bin "spruce" test) generated 4 warnings (run `cargo fix --bin "spruce" -p spruce --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/spruce-63000df57ae1ae2f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test size::size_format_tests ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "31c907b161a7a72d251eadd15bf920f1f61dbad3aab679db0e26040544824fb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31c907b161a7a72d251eadd15bf920f1f61dbad3aab679db0e26040544824fb8", kill_on_drop: false }`
[INFO] [stdout] 31c907b161a7a72d251eadd15bf920f1f61dbad3aab679db0e26040544824fb8
