[INFO] cloning repository https://github.com/davidpeklak/rust-algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidpeklak/rust-algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidpeklak%2Frust-algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidpeklak%2Frust-algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9db2d5ac0cfbfe409792033d26d8f4c8aaa3e872
[INFO] testing davidpeklak/rust-algorithms against 1.69.0 for beta-1.70-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidpeklak%2Frust-algorithms" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidpeklak/rust-algorithms on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davidpeklak/rust-algorithms
[INFO] finished tweaking git repo https://github.com/davidpeklak/rust-algorithms
[INFO] tweaked toml for git repo https://github.com/davidpeklak/rust-algorithms written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/davidpeklak/rust-algorithms 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" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09a4969ff09a7cf99eefd33a97cd922bcc8d209c11d4dbc4a4bf5ee08a66f90c
[INFO] running `Command { std: "docker" "start" "-a" "09a4969ff09a7cf99eefd33a97cd922bcc8d209c11d4dbc4a4bf5ee08a66f90c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09a4969ff09a7cf99eefd33a97cd922bcc8d209c11d4dbc4a4bf5ee08a66f90c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09a4969ff09a7cf99eefd33a97cd922bcc8d209c11d4dbc4a4bf5ee08a66f90c", kill_on_drop: false }`
[INFO] [stdout] 09a4969ff09a7cf99eefd33a97cd922bcc8d209c11d4dbc4a4bf5ee08a66f90c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b48a89c5372339e57c0e8ca49f9bbee333a39b04e01e316f2c244557a5beb3cf
[INFO] running `Command { std: "docker" "start" "-a" "b48a89c5372339e57c0e8ca49f9bbee333a39b04e01e316f2c244557a5beb3cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling libc v0.2.41
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling rand_core v0.2.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling rand v0.5.0
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling stopwatch v0.0.7
[INFO] [stderr]    Compiling algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     l: &'a LinkedList<Item=T>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |     l: &'a dyn LinkedList<Item=T>
[INFO] [stdout]    |            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<T> LinkedList for Box<LinkedList<Item=T>> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<T> LinkedList for Box<dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:29:41
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=Self::Item>>;
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=Self::Item>>;
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:56:41
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn tail<'a>(&'a self) -> Option<&LinkedList<Item=T>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn tail<'a>(&'a self) -> Option<&dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:88:41
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lib/red_black_bst_2.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         mem::replace(&mut self.top, top);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.46s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "b48a89c5372339e57c0e8ca49f9bbee333a39b04e01e316f2c244557a5beb3cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b48a89c5372339e57c0e8ca49f9bbee333a39b04e01e316f2c244557a5beb3cf", kill_on_drop: false }`
[INFO] [stdout] b48a89c5372339e57c0e8ca49f9bbee333a39b04e01e316f2c244557a5beb3cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 790c9b8a8a6e32033c77dd90633441e2782efc10aa472cef983f33bcc5323daf
[INFO] running `Command { std: "docker" "start" "-a" "790c9b8a8a6e32033c77dd90633441e2782efc10aa472cef983f33bcc5323daf", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     l: &'a LinkedList<Item=T>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |     l: &'a dyn LinkedList<Item=T>
[INFO] [stdout]    |            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<T> LinkedList for Box<LinkedList<Item=T>> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<T> LinkedList for Box<dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:29:41
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=Self::Item>>;
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=Self::Item>>;
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:56:41
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn tail<'a>(&'a self) -> Option<&LinkedList<Item=T>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn tail<'a>(&'a self) -> Option<&dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:88:41
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lib/red_black_bst_2.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         mem::replace(&mut self.top, top);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     l: &'a LinkedList<Item=T>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |     l: &'a dyn LinkedList<Item=T>
[INFO] [stdout]    |            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<T> LinkedList for Box<LinkedList<Item=T>> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<T> LinkedList for Box<dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:29:41
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=Self::Item>>;
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=Self::Item>>;
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:56:41
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn tail<'a>(&'a self) -> Option<&LinkedList<Item=T>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn tail<'a>(&'a self) -> Option<&dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:88:41
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=T>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib/linked_list.rs:134:34
[INFO] [stdout]     |
[INFO] [stdout] 134 |     fn some_linked_list() -> Box<LinkedList<Item=i32>> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 134 |     fn some_linked_list() -> Box<dyn LinkedList<Item=i32>> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib/linked_list.rs:153:41
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn prepend_some<'a, L>(l: L) -> Box<LinkedList<Item=i32> + 'a>
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn prepend_some<'a, L>(l: L) -> Box<dyn LinkedList<Item=i32> + 'a>
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lib/red_black_bst_2.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         mem::replace(&mut self.top, top);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "790c9b8a8a6e32033c77dd90633441e2782efc10aa472cef983f33bcc5323daf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "790c9b8a8a6e32033c77dd90633441e2782efc10aa472cef983f33bcc5323daf", kill_on_drop: false }`
[INFO] [stdout] 790c9b8a8a6e32033c77dd90633441e2782efc10aa472cef983f33bcc5323daf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] baac1f23d4cf293f7b0881b52899826d7377329f4a96801b380d93849178a217
[INFO] running `Command { std: "docker" "start" "-a" "baac1f23d4cf293f7b0881b52899826d7377329f4a96801b380d93849178a217", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     l: &'a LinkedList<Item=T>
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 36 |     l: &'a dyn LinkedList<Item=T>
[INFO] [stderr]    |            +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:65:28
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl<T> LinkedList for Box<LinkedList<Item=T>> {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl<T> LinkedList for Box<dyn LinkedList<Item=T>> {
[INFO] [stderr]    |                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:29:41
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=Self::Item>>;
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=Self::Item>>;
[INFO] [stderr]    |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:56:41
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=T>> {
[INFO] [stderr]    |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:72:38
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn tail<'a>(&'a self) -> Option<&LinkedList<Item=T>> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn tail<'a>(&'a self) -> Option<&dyn LinkedList<Item=T>> {
[INFO] [stderr]    |                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:88:41
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn tail<'a>(&'a self) -> Option<&'a dyn LinkedList<Item=T>> {
[INFO] [stderr]    |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/lib/red_black_bst_2.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         mem::replace(&mut self.top, top);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib/linked_list.rs:134:34
[INFO] [stderr]     |
[INFO] [stderr] 134 |     fn some_linked_list() -> Box<LinkedList<Item=i32>> {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 134 |     fn some_linked_list() -> Box<dyn LinkedList<Item=i32>> {
[INFO] [stderr]     |                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib/linked_list.rs:153:41
[INFO] [stderr]     |
[INFO] [stderr] 153 |     fn prepend_some<'a, L>(l: L) -> Box<LinkedList<Item=i32> + 'a>
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 153 |     fn prepend_some<'a, L>(l: L) -> Box<dyn LinkedList<Item=i32> + 'a>
[INFO] [stderr]     |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: `algorithms` (lib) generated 7 warnings (run `cargo fix --lib -p algorithms` to apply 6 suggestions)
[INFO] [stderr] warning: `algorithms` (lib test) generated 9 warnings (7 duplicates) (run `cargo fix --lib -p algorithms --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/lib/lib.rs (/opt/rustwide/target/debug/deps/algorithms-1dadccb15171db28)
[INFO] [stdout] 
[INFO] [stdout] running 83 tests
[INFO] [stdout] test deque::tests::add_last_and_query ... ok
[INFO] [stdout] test deque::tests::add_first_and_query ... ok
[INFO] [stdout] test deque::tests::box_to_non_null_to_box ... ok
[INFO] [stdout] test deque::tests::construct_deque_and_query ... ok
[INFO] [stdout] test deque::tests::fifo_left ... ok
[INFO] [stdout] test deque::tests::fifo_right ... ok
[INFO] [stdout] test deque::tests::filo_left ... ok
[INFO] [stdout] test deque::tests::filo_right ... ok
[INFO] [stdout] test deque::tests::iter ... ok
[INFO] [stdout] test deque::tests::sizes ... ok
[INFO] [stdout] test graph::tests::test_adj ... ok
[INFO] [stdout] test graph::tests::test_number_of_edges ... ok
[INFO] [stdout] test graph::tests::test_number_of_vertices ... ok
[INFO] [stdout] test graph_alg::tests::test_breadth_is_visted ... ok
[INFO] [stdout] test graph_alg::tests::test_breadth_path_to ... ok
[INFO] [stdout] test graph_alg::tests::test_depth_is_visted ... ok
[INFO] [stdout] test index_ops::test::vec_length ... ok
[INFO] [stdout] test graph_alg::tests::test_depth_path_to ... ok
[INFO] [stdout] test insertion_sort::test::small_example ... ok
[INFO] [stdout] test linked_list::tests::iter_loop ... ok
[INFO] [stdout] test is_sorted::test_is_sorted ... ok
[INFO] [stdout] test linked_list::tests::mixed_construction ... ok
[INFO] [stdout] test linked_list::tests::heap_construction ... ok
[INFO] [stdout] test linked_list::tests::stack_construction ... ok
[INFO] [stdout] test max_pq::tests::test_del_max ... ok
[INFO] [stdout] test linked_list::tests::iter_stack ... ok
[INFO] [stdout] test max_pq::tests::test_make_heap ... ok
[INFO] [stdout] test max_pq::tests::test_manual_sinking ... ok
[INFO] [stdout] test merge_sort::test::merge_some ... ok
[INFO] [stdout] test max_pq::tests::test_heap_sort ... ok
[INFO] [stdout] test percolation::tests::percolate_3_z ... ok
[INFO] [stdout] test quick_find::tests::test_3_c ... ok
[INFO] [stdout] test quick_sort::tests::partition_some ... ok
[INFO] [stdout] test max_pq::tests::test_is_binary_heap ... ok
[INFO] [stdout] test percolation::tests::percolate_1 ... ok
[INFO] [stdout] test percolation::tests::open_once ... ok
[INFO] [stdout] test max_pq::tests::test_insert ... ok
[INFO] [stdout] test percolation::tests::new_percolation_is_full ... ok
[INFO] [stdout] test percolation::tests::open_twice ... ok
[INFO] [stdout] test percolation::tests::percolate_3_s ... ok
[INFO] [stdout] test merge_sort::test::merge_sort_is_sorted ... ok
[INFO] [stdout] test quick_find::tests::test_3 ... ok
[INFO] [stdout] test quick_sort::tests::three_way_partition_some ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_black_depth ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_insert_1 ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_has_consecutive_red_links ... ok
[INFO] [stdout] test quick_union::tests::test_3 ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_has_right_leaning_red_links ... ok
[INFO] [stdout] test quick_union::tests::test_3_c ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_insert_2 ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_contains ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_into_iter ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_color_flip ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_rotate_left ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_insert_3 ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_rotate_right ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_from_iter ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_is_bst ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_total_depth ... ok
[INFO] [stdout] test shell_sort::test::example_from_course ... ok
[INFO] [stdout] test shell_sort::test::handwritten ... ok
[INFO] [stdout] test shell_sort::test::h_generation ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_iter ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_size ... ok
[INFO] [stdout] test quick_sort::tests::test_quick_select ... ok
[INFO] [stdout] test shell_sort::test::small_example ... ok
[INFO] [stdout] test shell_sort::test::sorted_step ... ok
[INFO] [stdout] test step::test::index ... ok
[INFO] [stdout] test selection_sort::test::vec_swap ... ok
[INFO] [stdout] test step::test::index_mut ... ok
[INFO] [stdout] test step::test::len_offset ... ok
[INFO] [stdout] test quick_sort::tests::quick_sort_some ... ok
[INFO] [stdout] test step::test::len ... ok
[INFO] [stdout] test quick_sort::tests::three_way_quick_sort_some ... ok
[INFO] [stdout] test weighted_quick_union::tests::test_3_c ... ok
[INFO] [stdout] test step::test::index_offset ... ok
[INFO] [stdout] test weighted_quick_union::tests::test_3 ... ok
[INFO] [stdout] test red_black_bst_2::tests::multiple_insertion_results_in_bst ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_big_tree ... ok
[INFO] [stdout] test merge_sort::test::merge_sort_some ... ok
[INFO] [stdout] test insertion_sort::test::insertion_sort_some ... ok
[INFO] [stdout] test selection_sort::test::selection_sort_some ... ok
[INFO] [stdout] test shell_sort::test::shell_sort_some ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 83 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/algorithms-a4fd34922901452b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/performance_deque.rs (/opt/rustwide/target/debug/deps/performance_deque-f63f3c2466fd3a2b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_performance ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.53s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/performance_heap_sort.rs (/opt/rustwide/target/debug/deps/performance_heap_sort-5f1b71436c72d510)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_performance ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_performance stdout ----
[INFO] [stdout] Size: 1, elapsed milliseconds: 0
[INFO] [stdout] Size: 2, elapsed milliseconds: 0
[INFO] [stdout] Size: 4, elapsed milliseconds: 0
[INFO] [stdout] Size: 8, elapsed milliseconds: 0
[INFO] [stdout] Size: 16, elapsed milliseconds: 0
[INFO] [stdout] Size: 32, elapsed milliseconds: 0
[INFO] [stdout] Size: 64, elapsed milliseconds: 0
[INFO] [stdout] Size: 128, elapsed milliseconds: 0
[INFO] [stdout] Size: 256, elapsed milliseconds: 0
[INFO] [stdout] Size: 512, elapsed milliseconds: 0
[INFO] [stdout] Size: 1024, elapsed milliseconds: 0
[INFO] [stdout] Size: 2048, elapsed milliseconds: 1
[INFO] [stdout] Size: 4096, elapsed milliseconds: 3
[INFO] [stdout] Ratio: 3
[INFO] [stdout] Size: 8192, elapsed milliseconds: 8
[INFO] [stdout] Ratio: 2.6666666666666665
[INFO] [stdout] Size: 16384, elapsed milliseconds: 17
[INFO] [stdout] Ratio: 2.125
[INFO] [stdout] Size: 32768, elapsed milliseconds: 37
[INFO] [stdout] Ratio: 2.176470588235294
[INFO] [stdout] Size: 65536, elapsed milliseconds: 81
[INFO] [stdout] Ratio: 2.189189189189189
[INFO] [stdout] Size: 131072, elapsed milliseconds: 173
[INFO] [stdout] Ratio: 2.1358024691358026
[INFO] [stdout] Size: 262144, elapsed milliseconds: 383
[INFO] [stdout] Ratio: 2.213872832369942
[INFO] [stdout] Size: 524288, elapsed milliseconds: 1187
[INFO] [stdout] Ratio: 3.0992167101827675
[INFO] [stdout] Size: 1048576, elapsed milliseconds: 2325
[INFO] [stdout] Ratio: 1.9587194608256109
[INFO] [stdout] Size: 2097152, elapsed milliseconds: 3881
[INFO] [stdout] Ratio: 1.669247311827957
[INFO] [stdout] Factor heap_sort = 1.669247311827957
[INFO] [stdout] thread 'test_performance' panicked at 'assertion failed: factor > 2.0', tests/performance_heap_sort.rs:32:5
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56326f207cca - std::backtrace_rs::backtrace::libunwind::trace::ha9053a9a07ca49cb
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x56326f207cca - std::backtrace_rs::backtrace::trace_unsynchronized::h9c2852a457ad564e
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x56326f207cca - std::sys_common::backtrace::_print_fmt::h457936fbfaa0070f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stdout]    3:     0x56326f207cca - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h5779d7bf7f70cb0c
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x56326f22b39e - core::fmt::write::h5a4baaff1bcd3eb5
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/fmt/mod.rs:1232:17
[INFO] [stdout]    5:     0x56326f205135 - std::io::Write::write_fmt::h478f79c628ef31d1
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/io/mod.rs:1684:15
[INFO] [stdout]    6:     0x56326f207a95 - std::sys_common::backtrace::_print::h5fcdc36060f177e8
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    7:     0x56326f207a95 - std::sys_common::backtrace::print::h54ca9458b876c8bf
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    8:     0x56326f20985f - std::panicking::default_hook::{{closure}}::hbe471161c7664ed6
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:271:22
[INFO] [stdout]    9:     0x56326f20951f - std::panicking::default_hook::ha3500da57aa4ac4f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:287:9
[INFO] [stdout]   10:     0x56326f1b3a47 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hdf1b89dd137ece34
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:2001:9
[INFO] [stdout]   11:     0x56326f1b3a47 - test::test_main::{{closure}}::h9081a79f20e75698
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:135:21
[INFO] [stdout]   12:     0x56326f209f8d - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6507bddc3eebb4a5
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:2001:9
[INFO] [stdout]   13:     0x56326f209f8d - std::panicking::rust_panic_with_hook::h50c09d000dc561d2
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:696:13
[INFO] [stdout]   14:     0x56326f209cc2 - std::panicking::begin_panic_handler::{{closure}}::h9e2b2176e00e0d9c
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:581:13
[INFO] [stdout]   15:     0x56326f208136 - std::sys_common::backtrace::__rust_end_short_backtrace::h5739b8e512c09d02
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:150:18
[INFO] [stdout]   16:     0x56326f209a12 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:579:5
[INFO] [stdout]   17:     0x56326f182b83 - core::panicking::panic_fmt::hf33a1475b4dc5c3e
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/panicking.rs:64:14
[INFO] [stdout]   18:     0x56326f182c1d - core::panicking::panic::h9533b2fee90b999e
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/panicking.rs:114:5
[INFO] [stdout]   19:     0x56326f183dc2 - performance_heap_sort::test_performance::hadf25ef1ec906bc6
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/performance_heap_sort.rs:32:5
[INFO] [stdout]   20:     0x56326f183cf7 - performance_heap_sort::test_performance::{{closure}}::h576dc2bbca584bb8
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/performance_heap_sort.rs:28:23
[INFO] [stdout]   21:     0x56326f183495 - core::ops::function::FnOnce::call_once::h59a743c8c2384a2b
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x56326f1b8e2f - core::ops::function::FnOnce::call_once::h7d969581be7d0075
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x56326f1b8e2f - test::__rust_begin_short_backtrace::hca25a52684e56655
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:656:18
[INFO] [stdout]   24:     0x56326f18a44c - test::run_test::{{closure}}::ha8ac744c4af1a4bb
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:647:30
[INFO] [stdout]   25:     0x56326f18a44c - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7b411a9ed45bdecf
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x56326f1b7df6 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd05328869a8ed200
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   27:     0x56326f1b7df6 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0c601ce20bd5b2be
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   28:     0x56326f1b7df6 - std::panicking::try::do_call::ha4be5c164fe30854
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:487:40
[INFO] [stdout]   29:     0x56326f1b7df6 - std::panicking::try::h604546f3609af05f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:451:19
[INFO] [stdout]   30:     0x56326f1b7df6 - std::panic::catch_unwind::h5bfa8afe44c9c2f9
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panic.rs:140:14
[INFO] [stdout]   31:     0x56326f1b7df6 - test::run_test_in_process::hd50dee55dd63e6aa
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:679:27
[INFO] [stdout]   32:     0x56326f1b7df6 - test::run_test::run_test_inner::{{closure}}::h4aa0f433aa85cea8
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:573:39
[INFO] [stdout]   33:     0x56326f184ac1 - test::run_test::run_test_inner::{{closure}}::had56431adf24b4d6
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:600:37
[INFO] [stdout]   34:     0x56326f184ac1 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha8d9890e0c73bf13
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:134:18
[INFO] [stdout]   35:     0x56326f18a4db - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h251832bcb4a95327
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/thread/mod.rs:560:17
[INFO] [stdout]   36:     0x56326f18a4db - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h8fdff598fa414831
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   37:     0x56326f18a4db - std::panicking::try::do_call::h455dd2f7764a950f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:487:40
[INFO] [stdout]   38:     0x56326f18a4db - std::panicking::try::had6f23b7b73ae72a
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:451:19
[INFO] [stdout]   39:     0x56326f18a4db - std::panic::catch_unwind::ha6a5ca3915b4dad0
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panic.rs:140:14
[INFO] [stdout]   40:     0x56326f18a4db - std::thread::Builder::spawn_unchecked_::{{closure}}::h883b72ef75da6231
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/thread/mod.rs:559:30
[INFO] [stdout]   41:     0x56326f18a4db - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb7dff73dc8bd2ccb
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x56326f20e303 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h39990b24eedef2ab
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   43:     0x56326f20e303 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h01a027258444143b
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   44:     0x56326f20e303 - std::sys::unix::thread::Thread::new::thread_start::ha4f1cdd9c25884ba
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f4e4d49fb43 - <unknown>
[INFO] [stdout]   46:     0x7f4e4d530bb4 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test_performance
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 8.64s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--test performance_heap_sort`
[INFO] running `Command { std: "docker" "inspect" "baac1f23d4cf293f7b0881b52899826d7377329f4a96801b380d93849178a217", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baac1f23d4cf293f7b0881b52899826d7377329f4a96801b380d93849178a217", kill_on_drop: false }`
[INFO] [stdout] baac1f23d4cf293f7b0881b52899826d7377329f4a96801b380d93849178a217
