[INFO] updating cached repository https://github.com/kazukiyoshida/data-structures-and-algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76dc6f7ff5231fc82cd4dadbec250a995e484fd6
[INFO] testing kazukiyoshida/data-structures-and-algorithms against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazukiyoshida%2Fdata-structures-and-algorithms" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kazukiyoshida/data-structures-and-algorithms on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kazukiyoshida/data-structures-and-algorithms
[INFO] finished tweaking git repo https://github.com/kazukiyoshida/data-structures-and-algorithms
[INFO] tweaked toml for git repo https://github.com/kazukiyoshida/data-structures-and-algorithms written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/kazukiyoshida/data-structures-and-algorithms already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97367a04a598591a0e5a0552a44b39db68a39344d737657b68f3e21f3b98dd60
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "97367a04a598591a0e5a0552a44b39db68a39344d737657b68f3e21f3b98dd60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97367a04a598591a0e5a0552a44b39db68a39344d737657b68f3e21f3b98dd60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97367a04a598591a0e5a0552a44b39db68a39344d737657b68f3e21f3b98dd60", kill_on_drop: false }`
[INFO] [stdout] 97367a04a598591a0e5a0552a44b39db68a39344d737657b68f3e21f3b98dd60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64e897b480562cb04b177069a31a99f12c2b71128d36697a9d02f5b24758aba2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "64e897b480562cb04b177069a31a99f12c2b71128d36697a9d02f5b24758aba2", kill_on_drop: false }`
[INFO] [stderr]    Compiling data-structures-and-algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/linked_list.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn new(v: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_empty`
[INFO] [stdout]   --> src/linked_list.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn new_empty() -> TransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append`
[INFO] [stdout]   --> src/linked_list.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn append(&mut self, v: String) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/linked_list.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/doubly_linked_list.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn new(v: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_empty`
[INFO] [stdout]   --> src/doubly_linked_list.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new_empty() -> BetterTransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append`
[INFO] [stdout]   --> src/doubly_linked_list.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn append(&mut self, v: String) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/doubly_linked_list.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/doubly_linked_list.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn iter(&self) -> ListIterator {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `back_iter`
[INFO] [stdout]   --> src/doubly_linked_list.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn back_iter(self) -> ListIterator {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "64e897b480562cb04b177069a31a99f12c2b71128d36697a9d02f5b24758aba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64e897b480562cb04b177069a31a99f12c2b71128d36697a9d02f5b24758aba2", kill_on_drop: false }`
[INFO] [stdout] 64e897b480562cb04b177069a31a99f12c2b71128d36697a9d02f5b24758aba2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d70f9a927d183bb2df9aa3c025db185c769f8911063cb5ff5c2f633618feef2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9d70f9a927d183bb2df9aa3c025db185c769f8911063cb5ff5c2f633618feef2", kill_on_drop: false }`
[INFO] [stderr]    Compiling data-structures-and-algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/linked_list.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn new(v: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_empty`
[INFO] [stdout]   --> src/linked_list.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn new_empty() -> TransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append`
[INFO] [stdout]   --> src/linked_list.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn append(&mut self, v: String) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/linked_list.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/doubly_linked_list.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn new(v: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_empty`
[INFO] [stdout]   --> src/doubly_linked_list.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new_empty() -> BetterTransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append`
[INFO] [stdout]   --> src/doubly_linked_list.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn append(&mut self, v: String) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/doubly_linked_list.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/doubly_linked_list.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn iter(&self) -> ListIterator {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `back_iter`
[INFO] [stdout]   --> src/doubly_linked_list.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn back_iter(self) -> ListIterator {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/doubly_linked_list.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/doubly_linked_list.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn iter(&self) -> ListIterator {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `back_iter`
[INFO] [stdout]   --> src/doubly_linked_list.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn back_iter(self) -> ListIterator {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "9d70f9a927d183bb2df9aa3c025db185c769f8911063cb5ff5c2f633618feef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d70f9a927d183bb2df9aa3c025db185c769f8911063cb5ff5c2f633618feef2", kill_on_drop: false }`
[INFO] [stdout] 9d70f9a927d183bb2df9aa3c025db185c769f8911063cb5ff5c2f633618feef2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] adc6b0b865d7346bfdbbdabbe9f7a76a79fd8554a286d5e2e0550827e02766c0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "adc6b0b865d7346bfdbbdabbe9f7a76a79fd8554a286d5e2e0550827e02766c0", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/linked_list.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn new(v: String) -> Rc<RefCell<Node>> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_empty`
[INFO] [stderr]   --> src/linked_list.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn new_empty() -> TransactionLog {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `append`
[INFO] [stderr]   --> src/linked_list.rs:56:12
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn append(&mut self, v: String) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pop`
[INFO] [stderr]   --> src/linked_list.rs:66:12
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/doubly_linked_list.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn new(v: String) -> Rc<RefCell<Node>> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_empty`
[INFO] [stderr]   --> src/doubly_linked_list.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn new_empty() -> BetterTransactionLog {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `append`
[INFO] [stderr]   --> src/doubly_linked_list.rs:49:12
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn append(&mut self, v: String) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pop`
[INFO] [stderr]   --> src/doubly_linked_list.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter`
[INFO] [stderr]   --> src/doubly_linked_list.rs:82:12
[INFO] [stderr]    |
[INFO] [stderr] 82 |     pub fn iter(&self) -> ListIterator {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `back_iter`
[INFO] [stderr]   --> src/doubly_linked_list.rs:86:12
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn back_iter(self) -> ListIterator {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pop`
[INFO] [stderr]   --> src/doubly_linked_list.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter`
[INFO] [stderr]   --> src/doubly_linked_list.rs:82:12
[INFO] [stderr]    |
[INFO] [stderr] 82 |     pub fn iter(&self) -> ListIterator {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `back_iter`
[INFO] [stderr]   --> src/doubly_linked_list.rs:86:12
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn back_iter(self) -> ListIterator {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/data_structures_and_algorithms-4ad0d384b29f4cfe
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]    Doc-tests data-structures-and-algorithms
[INFO] [stdout] test doubly_linked_list::test_doubly_linked_list ... ok
[INFO] [stdout] test linked_list::test_linked_list ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "adc6b0b865d7346bfdbbdabbe9f7a76a79fd8554a286d5e2e0550827e02766c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adc6b0b865d7346bfdbbdabbe9f7a76a79fd8554a286d5e2e0550827e02766c0", kill_on_drop: false }`
[INFO] [stdout] adc6b0b865d7346bfdbbdabbe9f7a76a79fd8554a286d5e2e0550827e02766c0