[INFO] cloning repository https://github.com/sigpher/algorithms-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sigpher/algorithms-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigpher%2Falgorithms-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigpher%2Falgorithms-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d5410d9919112a3544cebd6ac050b3599e9c17c
[INFO] checking sigpher/algorithms-in-rust against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigpher%2Falgorithms-in-rust" "/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/sigpher/algorithms-in-rust on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sigpher/algorithms-in-rust
[INFO] finished tweaking git repo https://github.com/sigpher/algorithms-in-rust
[INFO] tweaked toml for git repo https://github.com/sigpher/algorithms-in-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sigpher/algorithms-in-rust 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc7df9a3315d4f39a66e70c956402cd47df13fa078de8ad9035fc86783af2be4
[INFO] running `Command { std: "docker" "start" "-a" "cc7df9a3315d4f39a66e70c956402cd47df13fa078de8ad9035fc86783af2be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc7df9a3315d4f39a66e70c956402cd47df13fa078de8ad9035fc86783af2be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc7df9a3315d4f39a66e70c956402cd47df13fa078de8ad9035fc86783af2be4", kill_on_drop: false }`
[INFO] [stdout] cc7df9a3315d4f39a66e70c956402cd47df13fa078de8ad9035fc86783af2be4
[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=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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4279c0a7d4e469fee756cf75b74a2e84cb72b52cf0bddaac39bbb2504c2be8dd
[INFO] running `Command { std: "docker" "start" "-a" "4279c0a7d4e469fee756cf75b74a2e84cb72b52cf0bddaac39bbb2504c2be8dd", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Checking stack v0.1.0 (/opt/rustwide/workdir/stack)
[INFO] [stderr]     Checking recursion v0.1.0 (/opt/rustwide/workdir/recursion)
[INFO] [stderr]     Checking linkedlist v0.1.0 (/opt/rustwide/workdir/linkedlist)
[INFO] [stderr]     Checking deque v0.1.0 (/opt/rustwide/workdir/deque)
[INFO] [stderr]     Checking queue v0.1.0 (/opt/rustwide/workdir/queue)
[INFO] [stderr]     Checking lvec v0.1.0 (/opt/rustwide/workdir/lvec)
[INFO] [stdout] warning: function `basic` is never used
[INFO] [stdout]   --> recursion/src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn basic() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `basic` is never used
[INFO] [stdout]   --> recursion/src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn basic() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num2str` is never used
[INFO] [stdout]   --> recursion/src/main.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn num2str() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num2str` is never used
[INFO] [stdout]   --> recursion/src/main.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn num2str() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hanoi_test` is never used
[INFO] [stdout]   --> recursion/src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn hanoi_test() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hanoi_test` is never used
[INFO] [stdout]   --> recursion/src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn hanoi_test() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "4279c0a7d4e469fee756cf75b74a2e84cb72b52cf0bddaac39bbb2504c2be8dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4279c0a7d4e469fee756cf75b74a2e84cb72b52cf0bddaac39bbb2504c2be8dd", kill_on_drop: false }`
[INFO] [stdout] 4279c0a7d4e469fee756cf75b74a2e84cb72b52cf0bddaac39bbb2504c2be8dd
[INFO] checking sigpher/algorithms-in-rust against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigpher%2Falgorithms-in-rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sigpher/algorithms-in-rust on toolchain f9935d29d867449445ee008640ccca1bf1ae0889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sigpher/algorithms-in-rust
[INFO] finished tweaking git repo https://github.com/sigpher/algorithms-in-rust
[INFO] tweaked toml for git repo https://github.com/sigpher/algorithms-in-rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sigpher/algorithms-in-rust 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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9b785f1bdd28ff137e085e513456d13e37d2e13ac2b19ec487e301637daae32
[INFO] running `Command { std: "docker" "start" "-a" "d9b785f1bdd28ff137e085e513456d13e37d2e13ac2b19ec487e301637daae32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9b785f1bdd28ff137e085e513456d13e37d2e13ac2b19ec487e301637daae32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9b785f1bdd28ff137e085e513456d13e37d2e13ac2b19ec487e301637daae32", kill_on_drop: false }`
[INFO] [stdout] d9b785f1bdd28ff137e085e513456d13e37d2e13ac2b19ec487e301637daae32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 338b761b7d9e277d0b83256bf5354bc472c7a7dddce607a7d833e6fe871e6267
[INFO] running `Command { std: "docker" "start" "-a" "338b761b7d9e277d0b83256bf5354bc472c7a7dddce607a7d833e6fe871e6267", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Checking lvec v0.1.0 (/opt/rustwide/workdir/lvec)
[INFO] [stderr]     Checking deque v0.1.0 (/opt/rustwide/workdir/deque)
[INFO] [stderr]     Checking linkedlist v0.1.0 (/opt/rustwide/workdir/linkedlist)
[INFO] [stderr]     Checking queue v0.1.0 (/opt/rustwide/workdir/queue)
[INFO] [stderr]     Checking recursion v0.1.0 (/opt/rustwide/workdir/recursion)
[INFO] [stderr]     Checking stack v0.1.0 (/opt/rustwide/workdir/stack)
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> lvec/src/lib.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(elem: T) -> Self {
[INFO] [stdout]    |                ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 11 |         Self { elem, next: None }
[INFO] [stdout]    |                            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> lvec/src/lib.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(elem: T) -> Self {
[INFO] [stdout]    |                ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 11 |         Self { elem, next: None }
[INFO] [stdout]    |                            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> linkedlist/src/linkedlist/liststack.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(data: T) -> Self {
[INFO] [stdout]    |                ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 11 |         Self { data, next: None }
[INFO] [stdout]    |                            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lvec` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `lvec` (lib) due to 2 previous errors
[INFO] [stderr] error: could not compile `linkedlist` (lib) due to 2 previous errors
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> linkedlist/src/linkedlist/liststack.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(data: T) -> Self {
[INFO] [stdout]    |                ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 11 |         Self { data, next: None }
[INFO] [stdout]    |                            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `linkedlist` (lib test) due to 2 previous errors
[INFO] [stdout] warning: function `basic` is never used
[INFO] [stdout]   --> recursion/src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn basic() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num2str` is never used
[INFO] [stdout]   --> recursion/src/main.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn num2str() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hanoi_test` is never used
[INFO] [stdout]   --> recursion/src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn hanoi_test() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `basic` is never used
[INFO] [stdout]   --> recursion/src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn basic() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num2str` is never used
[INFO] [stdout]   --> recursion/src/main.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn num2str() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hanoi_test` is never used
[INFO] [stdout]   --> recursion/src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn hanoi_test() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "338b761b7d9e277d0b83256bf5354bc472c7a7dddce607a7d833e6fe871e6267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "338b761b7d9e277d0b83256bf5354bc472c7a7dddce607a7d833e6fe871e6267", kill_on_drop: false }`
[INFO] [stdout] 338b761b7d9e277d0b83256bf5354bc472c7a7dddce607a7d833e6fe871e6267