[INFO] fetching crate tree_decorator 0.1.2...
[INFO] testing tree_decorator-0.1.2 against 1.69.0 for beta-1.70-1
[INFO] extracting crate tree_decorator 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate tree_decorator 0.1.2 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tree_decorator 0.1.2
[INFO] finished tweaking crates.io crate tree_decorator 0.1.2
[INFO] tweaked toml for crates.io crate tree_decorator 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e020d48ffa4f4af5e392fee644baed4d8ca3f83b459ae2c0e2e711ef24f62de3
[INFO] running `Command { std: "docker" "start" "-a" "e020d48ffa4f4af5e392fee644baed4d8ca3f83b459ae2c0e2e711ef24f62de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e020d48ffa4f4af5e392fee644baed4d8ca3f83b459ae2c0e2e711ef24f62de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e020d48ffa4f4af5e392fee644baed4d8ca3f83b459ae2c0e2e711ef24f62de3", kill_on_drop: false }`
[INFO] [stdout] e020d48ffa4f4af5e392fee644baed4d8ca3f83b459ae2c0e2e711ef24f62de3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4b04ccf32e0a59a1a6a32fe426dac4270d89124d3396d0d4a05c0d1bf586b60
[INFO] running `Command { std: "docker" "start" "-a" "f4b04ccf32e0a59a1a6a32fe426dac4270d89124d3396d0d4a05c0d1bf586b60", kill_on_drop: false }`
[INFO] [stderr]    Compiling tree_decorator v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `style` is never read
[INFO] [stdout]    --> src/element_handler.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 110 | struct Block {
[INFO] [stdout]     |        ----- field in this struct
[INFO] [stdout] 111 |     pub representation: String,
[INFO] [stdout] 112 |     pub style: Style
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "f4b04ccf32e0a59a1a6a32fe426dac4270d89124d3396d0d4a05c0d1bf586b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4b04ccf32e0a59a1a6a32fe426dac4270d89124d3396d0d4a05c0d1bf586b60", kill_on_drop: false }`
[INFO] [stdout] f4b04ccf32e0a59a1a6a32fe426dac4270d89124d3396d0d4a05c0d1bf586b60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2f91b890deee680f0507f8e8acc4aa41716240afc1ee0188d82cc0905e287ee
[INFO] running `Command { std: "docker" "start" "-a" "b2f91b890deee680f0507f8e8acc4aa41716240afc1ee0188d82cc0905e287ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling time v0.3.20
[INFO] [stdout] warning: field `style` is never read
[INFO] [stdout]    --> src/element_handler.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 110 | struct Block {
[INFO] [stdout]     |        ----- field in this struct
[INFO] [stdout] 111 |     pub representation: String,
[INFO] [stdout] 112 |     pub style: Style
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling simple_logger v1.16.0
[INFO] [stderr]    Compiling tree_decorator v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `style` is never read
[INFO] [stdout]    --> src/element_handler.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 110 | struct Block {
[INFO] [stdout]     |        ----- field in this struct
[INFO] [stdout] 111 |     pub representation: String,
[INFO] [stdout] 112 |     pub style: Style
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     tree_item!(block, "Very Nested Items");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     tree_item!("A");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     tree_item!(block, "B");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         tree_item!(block; last, "B.a");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             tree_item!("B.a.a");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             tree_item!("B.a.b");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |             tree_item!("B.a.c");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |             tree_item!(block, "B.a.c");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 tree_item!("B.a.c.a");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 tree_item!("B.a.c.b");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 tree_item!(last, "B.a.c.c");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             tree_item!(last, "B.a.d");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     tree_item!("C");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     tree_item!("D");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     tree_item!("E");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_multiple_nested_levels.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     tree_item!(last, "F");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_output.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     tree_item!(block, "Root");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_output.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         tree_item!(entry, "Item A");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_output.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         tree_item!(entry: Entry::None, "Small Description");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_output.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         tree_item!(dashed, "Other Small Description");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_output.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         tree_item!(last; block, "Item B");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_output.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |             tree_item!("Item Ba");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_output.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |             tree_item!(block, "Item Bb");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_output.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 tree_item!(last, "Item Bba");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_output.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |             tree_item!(last, "Item Bc");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_items_level.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     tree_item!(block, "Root");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_items_level.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         tree_item!("Item A");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_items_level.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         tree_item!("Small Description");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_items_level.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         tree_item!("Other Small Description");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_items_level.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         tree_item!(last; block, "Item B");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_items_level.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             tree_item!("Item Ba");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_items_level.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             tree_item!(block, "Item Bb");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_items_level.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 tree_item!(last, "Item Bba");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout]   --> tests/test_items_level.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             tree_item!(last, "Item Bc");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `Command { std: "docker" "inspect" "b2f91b890deee680f0507f8e8acc4aa41716240afc1ee0188d82cc0905e287ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2f91b890deee680f0507f8e8acc4aa41716240afc1ee0188d82cc0905e287ee", kill_on_drop: false }`
[INFO] [stdout] b2f91b890deee680f0507f8e8acc4aa41716240afc1ee0188d82cc0905e287ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ed668015264235992d78e031185343be0f58ae45b3e846b2e5a290880784f448
[INFO] running `Command { std: "docker" "start" "-a" "ed668015264235992d78e031185343be0f58ae45b3e846b2e5a290880784f448", kill_on_drop: false }`
[INFO] [stderr] warning: field `style` is never read
[INFO] [stderr]    --> src/element_handler.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 110 | struct Block {
[INFO] [stderr]     |        ----- field in this struct
[INFO] [stderr] 111 |     pub representation: String,
[INFO] [stderr] 112 |     pub style: Style
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `tree_decorator` (lib) generated 1 warning
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_output.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     tree_item!(block, "Root");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_output.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         tree_item!(entry, "Item A");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_output.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |         tree_item!(entry: Entry::None, "Small Description");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_output.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         tree_item!(dashed, "Other Small Description");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_output.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |         tree_item!(last; block, "Item B");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_output.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |             tree_item!("Item Ba");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_output.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |             tree_item!(block, "Item Bb");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_output.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |                 tree_item!(last, "Item Bba");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_output.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |             tree_item!(last, "Item Bc");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     tree_item!(block, "Very Nested Items");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     tree_item!("A");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     tree_item!(block, "B");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |         tree_item!(block; last, "B.a");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |             tree_item!("B.a.a");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             tree_item!("B.a.b");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |             tree_item!("B.a.c");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |             tree_item!(block, "B.a.c");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |                 tree_item!("B.a.c.a");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:43:17
[INFO] [stderr]    |
[INFO] [stderr] 43 |                 tree_item!("B.a.c.b");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:44:17
[INFO] [stderr]    |
[INFO] [stderr] 44 |                 tree_item!(last, "B.a.c.c");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |             tree_item!(last, "B.a.d");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     tree_item!("C");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     tree_item!("D");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     tree_item!("E");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_multiple_nested_levels.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     tree_item!(last, "F");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_items_level.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     tree_item!(block, "Root");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_items_level.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         tree_item!("Item A");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_items_level.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         tree_item!("Small Description");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_items_level.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         tree_item!("Other Small Description");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_items_level.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         tree_item!(last; block, "Item B");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_items_level.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |             tree_item!("Item Ba");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_items_level.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |             tree_item!(block, "Item Bb");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_items_level.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 tree_item!(last, "Item Bba");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stderr]   --> tests/test_items_level.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             tree_item!(last, "Item Bc");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `tree_decorator` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `tree_decorator` (test "test_output") generated 9 warnings
[INFO] [stderr] warning: `tree_decorator` (test "test_multiple_nested_levels") generated 16 warnings
[INFO] [stderr] warning: `tree_decorator` (test "test_items_level") generated 9 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tree_decorator-2ff366aa8b1da562)
[INFO] [stderr]      Running tests/test_items_level.rs (/opt/rustwide/target/debug/deps/test_items_level-f4357c5ee6a42ecb)
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_items_level ... 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] [stderr]      Running tests/test_log.rs (/opt/rustwide/target/debug/deps/test_log-0a2fcb810cd852d4)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_output ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_output stdout ----
[INFO] [stdout] thread 'test_output' panicked at 'Could not determine the UTC offset on this system. Possible causes are that the time crate does not implement "local_offset_at" on your system, or that you are running in a multi-threaded environment and the time crate is returning "None" from "local_offset_at" to avoid unsafe behaviour. See the time crate's documentation for more information. (https://time-rs.github.io/internal-api/time/index.html#feature-flags): IndeterminateOffset', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/simple_logger-1.16.0/src/lib.rs:409:85
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5564faab06ca - std::backtrace_rs::backtrace::libunwind::trace::ha9053a9a07ca49cb
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x5564faab06ca - std::backtrace_rs::backtrace::trace_unsynchronized::h9c2852a457ad564e
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5564faab06ca - std::sys_common::backtrace::_print_fmt::h457936fbfaa0070f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stdout]    3:     0x5564faab06ca - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h5779d7bf7f70cb0c
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x5564faad43ae - core::fmt::write::h5a4baaff1bcd3eb5
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/fmt/mod.rs:1232:17
[INFO] [stdout]    5:     0x5564faaadb35 - std::io::Write::write_fmt::h478f79c628ef31d1
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/io/mod.rs:1684:15
[INFO] [stdout]    6:     0x5564faab0495 - std::sys_common::backtrace::_print::h5fcdc36060f177e8
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    7:     0x5564faab0495 - std::sys_common::backtrace::print::h54ca9458b876c8bf
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    8:     0x5564faab225f - std::panicking::default_hook::{{closure}}::hbe471161c7664ed6
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:271:22
[INFO] [stdout]    9:     0x5564faab1f1f - std::panicking::default_hook::ha3500da57aa4ac4f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:287:9
[INFO] [stdout]   10:     0x5564faa84927 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hdf1b89dd137ece34
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:2001:9
[INFO] [stdout]   11:     0x5564faa84927 - test::test_main::{{closure}}::h9081a79f20e75698
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:135:21
[INFO] [stdout]   12:     0x5564faab298d - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6507bddc3eebb4a5
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:2001:9
[INFO] [stdout]   13:     0x5564faab298d - std::panicking::rust_panic_with_hook::h50c09d000dc561d2
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:696:13
[INFO] [stdout]   14:     0x5564faab2709 - std::panicking::begin_panic_handler::{{closure}}::h9e2b2176e00e0d9c
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:583:13
[INFO] [stdout]   15:     0x5564faab0b36 - std::sys_common::backtrace::__rust_end_short_backtrace::h5739b8e512c09d02
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:150:18
[INFO] [stdout]   16:     0x5564faab2412 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:579:5
[INFO] [stdout]   17:     0x5564faa1bb83 - core::panicking::panic_fmt::hf33a1475b4dc5c3e
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/panicking.rs:64:14
[INFO] [stdout]   18:     0x5564faa1bfd3 - core::result::unwrap_failed::hdff5465d74574b44
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/result.rs:1750:5
[INFO] [stdout]   19:     0x5564faa277dc - core::result::Result<T,E>::expect::he73e508f34a4d70b
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/result.rs:1047:23
[INFO] [stdout]   20:     0x5564faa24f05 - <simple_logger::SimpleLogger as log::Log>::log::h121e6888734e3fcf
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/simple_logger-1.16.0/src/lib.rs:409:57
[INFO] [stdout]   21:     0x5564faa4356d - log::__private_api_log::he1fd6f91ad20537e
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/log-0.4.17/src/lib.rs:1597:5
[INFO] [stdout]   22:     0x5564faa1c9d7 - test_log::test_output::h0c4a3c1a793b4228
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/test_log.rs:24:5
[INFO] [stdout]   23:     0x5564faa1c4a7 - test_log::test_output::{{closure}}::h1af7ecb4a39eaf33
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/test_log.rs:3:18
[INFO] [stdout]   24:     0x5564faa1c2a5 - core::ops::function::FnOnce::call_once::h772dbb735eaa587d
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5564faa89d0f - core::ops::function::FnOnce::call_once::h7d969581be7d0075
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x5564faa89d0f - test::__rust_begin_short_backtrace::hca25a52684e56655
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:656:18
[INFO] [stdout]   27:     0x5564faa5b32c - test::run_test::{{closure}}::ha8ac744c4af1a4bb
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:647:30
[INFO] [stdout]   28:     0x5564faa5b32c - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7b411a9ed45bdecf
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x5564faa88cd6 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd05328869a8ed200
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   30:     0x5564faa88cd6 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0c601ce20bd5b2be
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   31:     0x5564faa88cd6 - std::panicking::try::do_call::ha4be5c164fe30854
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:487:40
[INFO] [stdout]   32:     0x5564faa88cd6 - std::panicking::try::h604546f3609af05f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:451:19
[INFO] [stdout]   33:     0x5564faa88cd6 - std::panic::catch_unwind::h5bfa8afe44c9c2f9
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panic.rs:140:14
[INFO] [stdout]   34:     0x5564faa88cd6 - test::run_test_in_process::hd50dee55dd63e6aa
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:679:27
[INFO] [stdout]   35:     0x5564faa88cd6 - test::run_test::run_test_inner::{{closure}}::h4aa0f433aa85cea8
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:573:39
[INFO] [stdout]   36:     0x5564faa559a1 - test::run_test::run_test_inner::{{closure}}::had56431adf24b4d6
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:600:37
[INFO] [stdout]   37:     0x5564faa559a1 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha8d9890e0c73bf13
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:134:18
[INFO] [stdout]   38:     0x5564faa5b3bb - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h251832bcb4a95327
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/thread/mod.rs:560:17
[INFO] [stdout]   39:     0x5564faa5b3bb - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h8fdff598fa414831
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   40:     0x5564faa5b3bb - std::panicking::try::do_call::h455dd2f7764a950f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:487:40
[INFO] [stdout]   41:     0x5564faa5b3bb - std::panicking::try::had6f23b7b73ae72a
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:451:19
[INFO] [stdout]   42:     0x5564faa5b3bb - std::panic::catch_unwind::ha6a5ca3915b4dad0
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panic.rs:140:14
[INFO] [stdout]   43:     0x5564faa5b3bb - std::thread::Builder::spawn_unchecked_::{{closure}}::h883b72ef75da6231
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/thread/mod.rs:559:30
[INFO] [stdout]   44:     0x5564faa5b3bb - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb7dff73dc8bd2ccb
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5564faab6cf3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h39990b24eedef2ab
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   46:     0x5564faab6cf3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h01a027258444143b
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   47:     0x5564faab6cf3 - std::sys::unix::thread::Thread::new::thread_start::ha4f1cdd9c25884ba
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   48:     0x7f65d8d2bb43 - <unknown>
[INFO] [stdout]   49:     0x7f65d8dbcbb4 - __clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test_output
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--test test_log`
[INFO] running `Command { std: "docker" "inspect" "ed668015264235992d78e031185343be0f58ae45b3e846b2e5a290880784f448", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed668015264235992d78e031185343be0f58ae45b3e846b2e5a290880784f448", kill_on_drop: false }`
[INFO] [stdout] ed668015264235992d78e031185343be0f58ae45b3e846b2e5a290880784f448
