[INFO] fetching crate display_tree 1.1.2...
[INFO] testing display_tree-1.1.2 against 1.90.0 for beta-1.91-3
[INFO] extracting crate display_tree 1.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate display_tree 1.1.2
[INFO] finished tweaking crates.io crate display_tree 1.1.2
[INFO] tweaked toml for crates.io crate display_tree 1.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate display_tree 1.1.2 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded display_tree_derive v1.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91dfdff848904fdc145939722d75488060bddb776503a44f8c6e78f40b1d74a0
[INFO] running `Command { std: "docker" "start" "-a" "91dfdff848904fdc145939722d75488060bddb776503a44f8c6e78f40b1d74a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91dfdff848904fdc145939722d75488060bddb776503a44f8c6e78f40b1d74a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91dfdff848904fdc145939722d75488060bddb776503a44f8c6e78f40b1d74a0", kill_on_drop: false }`
[INFO] [stdout] 91dfdff848904fdc145939722d75488060bddb776503a44f8c6e78f40b1d74a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d43643d1b80f4b348e91a8fce82650cf2277ddf386b8af8d8389f323ba52b89
[INFO] running `Command { std: "docker" "start" "-a" "1d43643d1b80f4b348e91a8fce82650cf2277ddf386b8af8d8389f323ba52b89", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling display_tree_derive v1.0.3
[INFO] [stderr]    Compiling display_tree v1.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.55s
[INFO] running `Command { std: "docker" "inspect" "1d43643d1b80f4b348e91a8fce82650cf2277ddf386b8af8d8389f323ba52b89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d43643d1b80f4b348e91a8fce82650cf2277ddf386b8af8d8389f323ba52b89", kill_on_drop: false }`
[INFO] [stdout] 1d43643d1b80f4b348e91a8fce82650cf2277ddf386b8af8d8389f323ba52b89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30c33339001800a7779df8a957af35cd6e19a0e7456658ecc4acb24adc10b558
[INFO] running `Command { std: "docker" "start" "-a" "30c33339001800a7779df8a957af35cd6e19a0e7456658ecc4acb24adc10b558", kill_on_drop: false }`
[INFO] [stderr]    Compiling display_tree v1.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary allocation, use `&` instead
[INFO] [stdout]   --> src/to_display_tree_ref.rs:91:20
[INFO] [stdout]    |
[INFO] [stdout] 91 |         assert_eq!(Box::new(Tree).to_display_tree(), &Tree)
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_allocation)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "30c33339001800a7779df8a957af35cd6e19a0e7456658ecc4acb24adc10b558", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30c33339001800a7779df8a957af35cd6e19a0e7456658ecc4acb24adc10b558", kill_on_drop: false }`
[INFO] [stdout] 30c33339001800a7779df8a957af35cd6e19a0e7456658ecc4acb24adc10b558
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3092a297f2eb035b9bddb0a6baaaeb6cab9cb93f2e3897a2bbac5710bb13e1e9
[INFO] running `Command { std: "docker" "start" "-a" "3092a297f2eb035b9bddb0a6baaaeb6cab9cb93f2e3897a2bbac5710bb13e1e9", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary allocation, use `&` instead
[INFO] [stderr]   --> src/to_display_tree_ref.rs:91:20
[INFO] [stderr]    |
[INFO] [stderr] 91 |         assert_eq!(Box::new(Tree).to_display_tree(), &Tree)
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_allocation)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `display_tree` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/display_tree-f9076dff3c791419)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stderr]      Running tests/attrs.rs (/opt/rustwide/target/debug/deps/attrs-4713b0c9a0120b3d)
[INFO] [stdout] test display::tests::italic ... ok
[INFO] [stdout] test display::tests::faint ... ok
[INFO] [stdout] test display::tests::plain ... ok
[INFO] [stdout] test display::tests::bold ... ok
[INFO] [stdout] test display::tests::background_color ... ok
[INFO] [stdout] test display::tests::strikethrough ... ok
[INFO] [stdout] test display::tests::text_color ... ok
[INFO] [stdout] test tests::format ... ok
[INFO] [stdout] test display::tests::underline ... ok
[INFO] [stdout] test tests::write ... ok
[INFO] [stdout] test to_display_tree_ref::tests::from_arc ... ok
[INFO] [stdout] test tests::writeln ... ok
[INFO] [stdout] test to_display_tree_ref::tests::from_box ... ok
[INFO] [stdout] test to_display_tree_ref::tests::from_cow ... ok
[INFO] [stdout] test to_display_tree_ref::tests::from_reference ... ok
[INFO] [stdout] test to_display_tree_ref::tests::from_value ... ok
[INFO] [stdout] test to_display_tree_ref::tests::from_rc ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test field_attr_field_label_no_args_enum ... ok
[INFO] [stdout] test field_attr_field_label_enum ... ok
[INFO] [stdout] test field_attr_field_label_struct ... ok
[INFO] [stdout] test field_attr_ignore_field_enum ... ok
[INFO] [stdout] test field_attr_ignore_field_struct ... ok
[INFO] [stdout] test field_attr_node_label_enum ... ok
[INFO] [stdout] test field_attr_tree_enum ... ok
[INFO] [stdout] test field_attr_tree_self ... ok
[INFO] [stdout] test field_attr_tree_struct ... ok
[INFO] [stdout] test field_attr_node_label_struct ... ok
[INFO] [stdout] test node_attr_node_label_enum ... ok
[INFO] [stdout] test node_attr_node_label_struct ... ok
[INFO] [stdout] test field_attr_field_label_no_args_struct ... ok
[INFO] [stdout] 
[INFO] [stderr]      Running tests/derive.rs (/opt/rustwide/target/debug/deps/derive-a8f5d1f2375cd6bd)
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test enum_named ... ok
[INFO] [stdout] test enum_unnamed ... ok
[INFO] [stdout] test field_struct ... ok
[INFO] [stdout] test enum_unit ... ok
[INFO] [stdout] test tuple_struct ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]      Running tests/style.rs (/opt/rustwide/target/debug/deps/style-5d1791eb649db901)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test char_set ... ok
[INFO] [stderr]    Doc-tests display_tree
[INFO] [stdout] test indentation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 25 tests
[INFO] [stdout] test src/display.rs - display::StyleBuilder::char_set (line 399) ... ok
[INFO] [stdout] test src/lib.rs - DisplayTree::fmt (line 242) ... ok
[INFO] [stdout] test src/display.rs - display::CharSet (line 309) ... ok
[INFO] [stdout] test src/display.rs - display::StyleBuilder::indentation (line 433) ... ok
[INFO] [stdout] test src/lib.rs - DisplayTree (line 210) ... ok
[INFO] [stdout] test src/display.rs - display::Style (line 129) ... ok
[INFO] [stdout] test src/display.rs - display::AsTree<'a,T>::new (line 74) ... ok
[INFO] [stdout] test src/lib.rs - format_tree (line 477) ... ok
[INFO] [stdout] test src/lib.rs - DisplayTree (line 228) ... ok
[INFO] [stdout] test src/display.rs - display::AsTree<'a,T>::with_style (line 94) ... ok
[INFO] [stdout] test src/lib.rs - DisplayTree (line 101) ... ok
[INFO] [stdout] test src/display.rs - display::AsTree (line 24) ... ok
[INFO] [stdout] test src/lib.rs - print_tree (line 292) ... ok
[INFO] [stdout] test src/lib.rs - DisplayTree (line 198) ... ok
[INFO] [stdout] test src/lib.rs - DisplayTree (line 186) ... ok
[INFO] [stdout] test src/lib.rs - print_tree (line 302) ... ok
[INFO] [stdout] test src/lib.rs - println_tree (line 337) ... ok
[INFO] [stdout] test src/lib.rs - println_tree (line 327) ... ok
[INFO] [stdout] test src/lib.rs - writeln_tree (line 434) ... ok
[INFO] [stdout] test src/lib.rs - writeln_tree (line 419) ... ok
[INFO] [stdout] test src/lib.rs - format_tree (line 488) ... ok
[INFO] [stdout] test src/lib.rs - (line 21) ... ok
[INFO] [stdout] test src/lib.rs - write_tree (line 376) ... ok
[INFO] [stdout] test src/lib.rs - write_tree (line 361) ... ok
[INFO] [stdout] test src/display.rs - display::AsTree (line 45) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 25 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.36s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3092a297f2eb035b9bddb0a6baaaeb6cab9cb93f2e3897a2bbac5710bb13e1e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3092a297f2eb035b9bddb0a6baaaeb6cab9cb93f2e3897a2bbac5710bb13e1e9", kill_on_drop: false }`
[INFO] [stdout] 3092a297f2eb035b9bddb0a6baaaeb6cab9cb93f2e3897a2bbac5710bb13e1e9