[INFO] fetching crate tree_decorator 0.1.2...
[INFO] testing tree_decorator-0.1.2 against 1.59.0 for beta-1.60-1
[INFO] extracting crate tree_decorator 0.1.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate tree_decorator 0.1.2 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 67d741a7de1d706db075c155e6a4d5dacf6216014f3b730b26177f5ef1de54f5
[INFO] running `Command { std: "docker" "start" "-a" "67d741a7de1d706db075c155e6a4d5dacf6216014f3b730b26177f5ef1de54f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67d741a7de1d706db075c155e6a4d5dacf6216014f3b730b26177f5ef1de54f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67d741a7de1d706db075c155e6a4d5dacf6216014f3b730b26177f5ef1de54f5", kill_on_drop: false }`
[INFO] [stdout] 67d741a7de1d706db075c155e6a4d5dacf6216014f3b730b26177f5ef1de54f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e494b88ae0f4bc850bbe2abcba99b0ed23494dbf8899d707926c002edd66ab9
[INFO] running `Command { std: "docker" "start" "-a" "6e494b88ae0f4bc850bbe2abcba99b0ed23494dbf8899d707926c002edd66ab9", kill_on_drop: false }`
[INFO] [stderr]    Compiling tree_decorator v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `style`
[INFO] [stdout]    --> src/element_handler.rs:112:5
[INFO] [stdout]     |
[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 0.92s
[INFO] running `Command { std: "docker" "inspect" "6e494b88ae0f4bc850bbe2abcba99b0ed23494dbf8899d707926c002edd66ab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e494b88ae0f4bc850bbe2abcba99b0ed23494dbf8899d707926c002edd66ab9", kill_on_drop: false }`
[INFO] [stdout] 6e494b88ae0f4bc850bbe2abcba99b0ed23494dbf8899d707926c002edd66ab9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c580dd1dad7743cc5424f004c4ab280b8ac2c78d7eaceab86d93e19e7474b6a
[INFO] running `Command { std: "docker" "start" "-a" "0c580dd1dad7743cc5424f004c4ab280b8ac2c78d7eaceab86d93e19e7474b6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling time-macros v0.2.3
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stdout] warning: field is never read: `style`
[INFO] [stdout]    --> src/element_handler.rs:112:5
[INFO] [stdout]     |
[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 time v0.3.7
[INFO] [stderr]    Compiling simple_logger v1.16.0
[INFO] [stderr]    Compiling tree_decorator v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `style`
[INFO] [stdout]    --> src/element_handler.rs:112:5
[INFO] [stdout]     |
[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_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: 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_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: 1 warning 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] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "0c580dd1dad7743cc5424f004c4ab280b8ac2c78d7eaceab86d93e19e7474b6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c580dd1dad7743cc5424f004c4ab280b8ac2c78d7eaceab86d93e19e7474b6a", kill_on_drop: false }`
[INFO] [stdout] 0c580dd1dad7743cc5424f004c4ab280b8ac2c78d7eaceab86d93e19e7474b6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 52849903f1d7861b473835d639fbc882b22f76e24e3a14e74e137ebe33673e4b
[INFO] running `Command { std: "docker" "start" "-a" "52849903f1d7861b473835d639fbc882b22f76e24e3a14e74e137ebe33673e4b", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `style`
[INFO] [stderr]    --> src/element_handler.rs:112:5
[INFO] [stderr]     |
[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] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] running 0 tests
[INFO] [stderr]    = note: this warning originates in the macro `tree_item` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] warning: unused return value of `String::as_str` that must be used
[INFO] [stdout] 
[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 (/opt/rustwide/target/debug/deps/tree_decorator-734919eab5321ab5)
[INFO] [stderr]      Running tests/test_items_level.rs (/opt/rustwide/target/debug/deps/test_items_level-cd334c8f609d4df5)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_log.rs (/opt/rustwide/target/debug/deps/test_log-fbb7e0f17efa8dc9)
[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] [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:     0x55eeb4106c8c - std::backtrace_rs::backtrace::libunwind::trace::h91c465e73bf6c785
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x55eeb4106c8c - std::backtrace_rs::backtrace::trace_unsynchronized::hae9da36f5d58b5f3
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55eeb4106c8c - std::sys_common::backtrace::_print_fmt::h7f499fa126a7effb
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x55eeb4106c8c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h3e2b509ce2ce6007
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x55eeb412c5fc - core::fmt::write::h753c7571fa063ecb
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/fmt/mod.rs:1168:17
[INFO] [stdout]    5:     0x55eeb4101ee3 - std::io::Write::write_fmt::hb649ab67f71b6655
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/io/mod.rs:1660:15
[INFO] [stdout]    6:     0x55eeb4109362 - std::sys_common::backtrace::_print::h64941a6fc8b0ed9b
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x55eeb4109362 - std::sys_common::backtrace::print::hcf25e43e1a9b0766
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x55eeb4109362 - std::panicking::default_hook::{{closure}}::h78d3e6cf97fc623d
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:211:50
[INFO] [stdout]    9:     0x55eeb4108fb1 - std::panicking::default_hook::hda898f8d3ad1a5ae
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:225:9
[INFO] [stdout]   10:     0x55eeb41099b3 - std::panicking::rust_panic_with_hook::h1a5ea2d6c23051aa
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:606:17
[INFO] [stdout]   11:     0x55eeb41096d0 - std::panicking::begin_panic_handler::{{closure}}::h07f549390938b73f
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:502:13
[INFO] [stdout]   12:     0x55eeb4107134 - std::sys_common::backtrace::__rust_end_short_backtrace::h5ec3758a92cfb00d
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:139:18
[INFO] [stdout]   13:     0x55eeb4109409 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:498:5
[INFO] [stdout]   14:     0x55eeb4073e51 - core::panicking::panic_fmt::h3a79a6a99affe1d5
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/panicking.rs:116:14
[INFO] [stdout]   15:     0x55eeb4073f43 - core::result::unwrap_failed::ha0327e3803285d6e
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/result.rs:1690:5
[INFO] [stdout]   16:     0x55eeb407e66d - core::result::Result<T,E>::expect::h8c08c0ee9cecc130
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/result.rs:975:23
[INFO] [stdout]   17:     0x55eeb4080098 - <simple_logger::SimpleLogger as log::Log>::log::hb596c9265d10f5fd
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/simple_logger-1.16.0/src/lib.rs:409:57
[INFO] [stdout]   18:     0x55eeb409d892 - log::__private_api_log::h2eb4bd0b1d728d98
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/log-0.4.14/src/lib.rs:1460:5
[INFO] [stdout]   19:     0x55eeb4074bc7 - test_log::test_output::ha4db390e1a5c2974
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/test_log.rs:24:5
[INFO] [stdout]   20:     0x55eeb40746ba - test_log::test_output::{{closure}}::h82927ed8e2a3486b
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/test_log.rs:3:1
[INFO] [stdout]   21:     0x55eeb40771ee - core::ops::function::FnOnce::call_once::h4cd4cdc50ca62371
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   22:     0x55eeb40dc983 - core::ops::function::FnOnce::call_once::h1845a80638abc06e
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   23:     0x55eeb40dc983 - test::__rust_begin_short_backtrace::h4f56ccea01b9889f
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/test/src/lib.rs:574:5
[INFO] [stdout]   24:     0x55eeb40db66f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5afedf14a39ffa74
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/alloc/src/boxed.rs:1854:9
[INFO] [stdout]   25:     0x55eeb40db66f - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd5aaa1b551e9ce71
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   26:     0x55eeb40db66f - std::panicking::try::do_call::h316eebee63f96d32
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:406:40
[INFO] [stdout]   27:     0x55eeb40db66f - std::panicking::try::h662e31e84dd7ce52
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:370:19
[INFO] [stdout]   28:     0x55eeb40db66f - std::panic::catch_unwind::h129c1b23f076663f
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panic.rs:133:14
[INFO] [stdout]   29:     0x55eeb40db66f - test::run_test_in_process::h51d800d572f878ef
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/test/src/lib.rs:597:18
[INFO] [stdout]   30:     0x55eeb40db66f - test::run_test::run_test_inner::{{closure}}::h71a47db430260854
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/test/src/lib.rs:491:39
[INFO] [stdout]   31:     0x55eeb40e4a31 - test::run_test::run_test_inner::{{closure}}::h02edd5b3e2dab52a
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/test/src/lib.rs:518:37
[INFO] [stdout]   32:     0x55eeb40e4a31 - std::sys_common::backtrace::__rust_begin_short_backtrace::h0838cfc8b0e995ec
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:123:18
[INFO] [stdout]   33:     0x55eeb40b14bf - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h4c2725d7078043cd
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/thread/mod.rs:477:17
[INFO] [stdout]   34:     0x55eeb40b14bf - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hdf1aa612eed87270
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   35:     0x55eeb40b14bf - std::panicking::try::do_call::hc72f8de3706d18d6
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:406:40
[INFO] [stdout]   36:     0x55eeb40b14bf - std::panicking::try::h63f01f54dbd0fb87
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:370:19
[INFO] [stdout]   37:     0x55eeb40b14bf - std::panic::catch_unwind::h58bc464ae9b26453
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panic.rs:133:14
[INFO] [stdout]   38:     0x55eeb40b14bf - std::thread::Builder::spawn_unchecked::{{closure}}::h6c065e19513e33e3
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/thread/mod.rs:476:30
[INFO] [stdout]   39:     0x55eeb40b14bf - core::ops::function::FnOnce::call_once{{vtable.shim}}::hd143450c74f35c32
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   40:     0x55eeb410f533 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h49b6c7c5155a2296
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/alloc/src/boxed.rs:1854:9
[INFO] [stdout]   41:     0x55eeb410f533 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha8b5234bfeb15105
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/alloc/src/boxed.rs:1854:9
[INFO] [stdout]   42:     0x55eeb410f533 - std::sys::unix::thread::Thread::new::thread_start::h6f207dd842d64859
[INFO] [stdout]                                at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   43:     0x7ff85eb6f609 - start_thread
[INFO] [stdout]   44:     0x7ff85e941293 - clone
[INFO] [stdout]   45:                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" "52849903f1d7861b473835d639fbc882b22f76e24e3a14e74e137ebe33673e4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52849903f1d7861b473835d639fbc882b22f76e24e3a14e74e137ebe33673e4b", kill_on_drop: false }`
[INFO] [stdout] 52849903f1d7861b473835d639fbc882b22f76e24e3a14e74e137ebe33673e4b