[INFO] cloning repository https://github.com/study1ng/Algorithm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/study1ng/Algorithm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstudy1ng%2FAlgorithm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstudy1ng%2FAlgorithm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b70ab43323bc733048f8d7ecedce6802df7cf7d1
[INFO] testing study1ng/Algorithm against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstudy1ng%2FAlgorithm" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/study1ng/Algorithm
[INFO] finished tweaking git repo https://github.com/study1ng/Algorithm
[INFO] tweaked toml for git repo https://github.com/study1ng/Algorithm written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/study1ng/Algorithm on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/study1ng/Algorithm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3155e76350f4d97890fc086f58a448937e7c010241e44347c82c5e371b53451
[INFO] running `Command { std: "docker" "start" "-a" "f3155e76350f4d97890fc086f58a448937e7c010241e44347c82c5e371b53451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3155e76350f4d97890fc086f58a448937e7c010241e44347c82c5e371b53451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3155e76350f4d97890fc086f58a448937e7c010241e44347c82c5e371b53451", kill_on_drop: false }`
[INFO] [stdout] f3155e76350f4d97890fc086f58a448937e7c010241e44347c82c5e371b53451
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 051c8d4ef8feb509522928f2328cef170487b97bd1c8f9477601d47890f0ce0a
[INFO] running `Command { std: "docker" "start" "-a" "051c8d4ef8feb509522928f2328cef170487b97bd1c8f9477601d47890f0ce0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling algorithm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `panic_immediate_abort`
[INFO] [stdout]    --> src/tree234.rs:495:20
[INFO] [stdout]     |
[INFO] [stdout] 495 |     #[cfg_attr(not(feature = "panic_immediate_abort"), inline(never))]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `panic_immediate_abort` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `panic_immediate_abort`
[INFO] [stdout]    --> src/tree234.rs:524:20
[INFO] [stdout]     |
[INFO] [stdout] 524 |     #[cfg_attr(not(feature = "panic_immediate_abort"), inline(never))]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `panic_immediate_abort` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]  --> src/rbtree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::BTreeMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `red`, `black`, `left`, and `right` are never used
[INFO] [stdout]   --> src/rbtree.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<T> RBTree<T> {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn red(data: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn black(data: T) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn left(&self) -> &RBTree<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn right(&self) -> &RBTree<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "051c8d4ef8feb509522928f2328cef170487b97bd1c8f9477601d47890f0ce0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "051c8d4ef8feb509522928f2328cef170487b97bd1c8f9477601d47890f0ce0a", kill_on_drop: false }`
[INFO] [stdout] 051c8d4ef8feb509522928f2328cef170487b97bd1c8f9477601d47890f0ce0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 601ea039de852160b142df205d21ab4698e16c423bf6cd44e17d38520a8362da
[INFO] running `Command { std: "docker" "start" "-a" "601ea039de852160b142df205d21ab4698e16c423bf6cd44e17d38520a8362da", kill_on_drop: false }`
[INFO] [stdout] warning: unexpected `cfg` condition value: `panic_immediate_abort`
[INFO] [stdout]    --> src/tree234.rs:495:20
[INFO] [stdout]     |
[INFO] [stdout] 495 |     #[cfg_attr(not(feature = "panic_immediate_abort"), inline(never))]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `panic_immediate_abort` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `panic_immediate_abort`
[INFO] [stdout]    --> src/tree234.rs:524:20
[INFO] [stdout]     |
[INFO] [stdout] 524 |     #[cfg_attr(not(feature = "panic_immediate_abort"), inline(never))]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `panic_immediate_abort` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling algorithm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]  --> src/rbtree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::BTreeMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `red`, `black`, `left`, and `right` are never used
[INFO] [stdout]   --> src/rbtree.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<T> RBTree<T> {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn red(data: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn black(data: T) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn left(&self) -> &RBTree<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn right(&self) -> &RBTree<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `panic_immediate_abort`
[INFO] [stdout]    --> src/tree234.rs:495:20
[INFO] [stdout]     |
[INFO] [stdout] 495 |     #[cfg_attr(not(feature = "panic_immediate_abort"), inline(never))]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `panic_immediate_abort` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `panic_immediate_abort`
[INFO] [stdout]    --> src/tree234.rs:524:20
[INFO] [stdout]     |
[INFO] [stdout] 524 |     #[cfg_attr(not(feature = "panic_immediate_abort"), inline(never))]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `panic_immediate_abort` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]  --> src/rbtree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::BTreeMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `red`, `black`, `left`, and `right` are never used
[INFO] [stdout]   --> src/rbtree.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<T> RBTree<T> {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn red(data: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn black(data: T) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn left(&self) -> &RBTree<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn right(&self) -> &RBTree<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "601ea039de852160b142df205d21ab4698e16c423bf6cd44e17d38520a8362da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "601ea039de852160b142df205d21ab4698e16c423bf6cd44e17d38520a8362da", kill_on_drop: false }`
[INFO] [stdout] 601ea039de852160b142df205d21ab4698e16c423bf6cd44e17d38520a8362da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 656f6d0aa2b31a5a55a0914c35d93f8ae60f5836178279d525cf3e37f373c72f
[INFO] running `Command { std: "docker" "start" "-a" "656f6d0aa2b31a5a55a0914c35d93f8ae60f5836178279d525cf3e37f373c72f", kill_on_drop: false }`
[INFO] [stderr] warning: unexpected `cfg` condition value: `panic_immediate_abort`
[INFO] [stderr]    --> src/tree234.rs:495:20
[INFO] [stderr]     |
[INFO] [stderr] 495 |     #[cfg_attr(not(feature = "panic_immediate_abort"), inline(never))]
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stderr]     |
[INFO] [stderr]     = note: no expected values for `feature`
[INFO] [stderr]     = help: consider adding `panic_immediate_abort` as a feature in `Cargo.toml`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition value: `panic_immediate_abort`
[INFO] [stderr]    --> src/tree234.rs:524:20
[INFO] [stderr]     |
[INFO] [stderr] 524 |     #[cfg_attr(not(feature = "panic_immediate_abort"), inline(never))]
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stderr]     |
[INFO] [stderr]     = note: no expected values for `feature`
[INFO] [stderr]     = help: consider adding `panic_immediate_abort` as a feature in `Cargo.toml`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::BTreeMap`
[INFO] [stderr]  --> src/rbtree.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::BTreeMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `red`, `black`, `left`, and `right` are never used
[INFO] [stderr]   --> src/rbtree.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | impl<T> RBTree<T> {
[INFO] [stderr]    | ----------------- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 17 |     fn red(data: T) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 20 |     fn black(data: T) -> Self {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 29 |     fn left(&self) -> &RBTree<T> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 40 |     fn right(&self) -> &RBTree<T> {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `algorithm` (lib) generated 4 warnings (run `cargo fix --lib -p algorithm` to apply 1 suggestion)
[INFO] [stderr] warning: `algorithm` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/algorithm-bf236f58c72f1735)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test bit_search::tests::test_searcher ... ok
[INFO] [stdout] test bit_search::tests::test_result ... ok
[INFO] [stdout] test tests::test_tree234::tests::test_delete ... ok
[INFO] [stdout] test tests::test_tree234::tests::test_find ... ok
[INFO] [stdout] test tests::test_tree234::tests::test_clear ... ok
[INFO] [stdout] test tests::test_tree234::tests::test_is_empty ... ok
[INFO] [stdout] test tests::test_tree234::tests::test_insert ... ok
[INFO] [stdout] test tests::test_tree234::tests::test_new ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests algorithm
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/tree234.rs - tree234::Tree234<T>::from (line 71) ... FAILED
[INFO] [stdout] test src/tree234.rs - tree234::Tree234<T>::find (line 270) ... FAILED
[INFO] [stdout] test src/tree234.rs - tree234::Tree234<T>::append (line 115) ... FAILED
[INFO] [stdout] test src/tree234.rs - tree234::Tree234<T>::insert (line 131) ... ok
[INFO] [stdout] test src/tree234.rs - tree234::Tree234<T>::delete (line 198) ... FAILED
[INFO] [stdout] test src/tree234.rs - tree234::Tree234 (line 13) ... FAILED
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/tree234.rs - tree234::Tree234<T>::from (line 71) stdout ----
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]  --> src/tree234.rs:75:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | assert(tree.find(&1));
[INFO] [stdout]   | ^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]   |
[INFO] [stdout] 7 | assert!(tree.find(&1));
[INFO] [stdout]   |       +
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/tree234.rs - tree234::Tree234<T>::find (line 270) stdout ----
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]  --> src/tree234.rs:275:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | assert(tree.find(&1));
[INFO] [stdout]   | ^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]   |
[INFO] [stdout] 8 | assert!(tree.find(&1));
[INFO] [stdout]   |       +
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]  --> src/tree234.rs:276:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | assert(!tree.find(&2));
[INFO] [stdout]   | ^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]   |
[INFO] [stdout] 9 | assert!(!tree.find(&2));
[INFO] [stdout]   |       +
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/tree234.rs - tree234::Tree234<T>::append (line 115) stdout ----
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]  --> src/tree234.rs:120:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | assert(tree.find(&1));
[INFO] [stdout]   | ^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]   |
[INFO] [stdout] 8 | assert!(tree.find(&1));
[INFO] [stdout]   |       +
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]  --> src/tree234.rs:121:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | assert(tree.find(&2));
[INFO] [stdout]   | ^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]   |
[INFO] [stdout] 9 | assert!(tree.find(&2));
[INFO] [stdout]   |       +
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]   --> src/tree234.rs:122:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | assert(tree.find(&3));
[INFO] [stdout]    | ^^^^^^ not a function
[INFO] [stdout]    |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]    |
[INFO] [stdout] 10 | assert!(tree.find(&3));
[INFO] [stdout]    |       +
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/tree234.rs - tree234::Tree234<T>::delete (line 198) stdout ----
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]  --> src/tree234.rs:203:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | assert(tree.delete(&1));
[INFO] [stdout]   | ^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]   |
[INFO] [stdout] 8 | assert!(tree.delete(&1));
[INFO] [stdout]   |       +
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]  --> src/tree234.rs:204:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | assert(!tree.delete(&1));
[INFO] [stdout]   | ^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]   |
[INFO] [stdout] 9 | assert!(!tree.delete(&1));
[INFO] [stdout]   |       +
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/tree234.rs - tree234::Tree234 (line 13) stdout ----
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]   --> src/tree234.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | assert(tree.find(&1));
[INFO] [stdout]    | ^^^^^^ not a function
[INFO] [stdout]    |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]    |
[INFO] [stdout] 10 | assert!(tree.find(&1));
[INFO] [stdout]    |       +
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]   --> src/tree234.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | assert(tree.find(&2));
[INFO] [stdout]    | ^^^^^^ not a function
[INFO] [stdout]    |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]    |
[INFO] [stdout] 11 | assert!(tree.find(&2));
[INFO] [stdout]    |       +
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]   --> src/tree234.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | assert(!tree.find(&4));
[INFO] [stdout]    | ^^^^^^ not a function
[INFO] [stdout]    |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]    |
[INFO] [stdout] 12 | assert!(!tree.find(&4));
[INFO] [stdout]    |       +
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, found macro `assert`
[INFO] [stdout]   --> src/tree234.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | assert(!tree.find(&2));
[INFO] [stdout]    | ^^^^^^ not a function
[INFO] [stdout]    |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]    |
[INFO] [stdout] 14 | assert!(!tree.find(&2));
[INFO] [stdout]    |       +
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/tree234.rs - tree234::Tree234 (line 13)
[INFO] [stdout]     src/tree234.rs - tree234::Tree234<T>::append (line 115)
[INFO] [stdout]     src/tree234.rs - tree234::Tree234<T>::delete (line 198)
[INFO] [stdout]     src/tree234.rs - tree234::Tree234<T>::find (line 270)
[INFO] [stdout]     src/tree234.rs - tree234::Tree234<T>::from (line 71)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 5 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "656f6d0aa2b31a5a55a0914c35d93f8ae60f5836178279d525cf3e37f373c72f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "656f6d0aa2b31a5a55a0914c35d93f8ae60f5836178279d525cf3e37f373c72f", kill_on_drop: false }`
[INFO] [stdout] 656f6d0aa2b31a5a55a0914c35d93f8ae60f5836178279d525cf3e37f373c72f
