[INFO] cloning repository https://github.com/famibo/rust-single-linked-list [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/famibo/rust-single-linked-list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffamibo%2Frust-single-linked-list", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffamibo%2Frust-single-linked-list'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 20139794963458570f7dfe05b39890b2812fb0bd [INFO] testing famibo/rust-single-linked-list against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffamibo%2Frust-single-linked-list" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/famibo/rust-single-linked-list [INFO] finished tweaking git repo https://github.com/famibo/rust-single-linked-list [INFO] tweaked toml for git repo https://github.com/famibo/rust-single-linked-list written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/famibo/rust-single-linked-list on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/famibo/rust-single-linked-list 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] daa7797cb7050d05ce77cf2156523ddb7ba4e36924134beb1e2029b736d3df6e [INFO] running `Command { std: "docker" "start" "-a" "daa7797cb7050d05ce77cf2156523ddb7ba4e36924134beb1e2029b736d3df6e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "daa7797cb7050d05ce77cf2156523ddb7ba4e36924134beb1e2029b736d3df6e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "daa7797cb7050d05ce77cf2156523ddb7ba4e36924134beb1e2029b736d3df6e", kill_on_drop: false }` [INFO] [stdout] daa7797cb7050d05ce77cf2156523ddb7ba4e36924134beb1e2029b736d3df6e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9bc5da781e19a080bb44c69c02b6bdf4dd56aa2b852c2c26fb97cff9ea3d2059 [INFO] running `Command { std: "docker" "start" "-a" "9bc5da781e19a080bb44c69c02b6bdf4dd56aa2b852c2c26fb97cff9ea3d2059", kill_on_drop: false }` [INFO] [stderr] Compiling singly_linked_list v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `ListItem` is never constructed [INFO] [stdout] --> src/linked_list.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | pub struct ListItem { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SinglyLinkedList` is never constructed [INFO] [stdout] --> src/linked_list.rs:9:12 [INFO] [stdout] | [INFO] [stdout] 9 | pub struct SinglyLinkedList { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `next`, `data`, and `as_mut` are never used [INFO] [stdout] --> src/linked_list.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 13 | impl ListItem { [INFO] [stdout] | ------------------- associated items in this implementation [INFO] [stdout] 14 | fn new(data: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 20 | pub fn next(&self) -> Option<&Self> { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 27 | pub fn data(&self) -> &T { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 30 | fn as_mut(&mut self) -> &mut Self { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `append`, `head`, and `tail` are never used [INFO] [stdout] --> src/linked_list.rs:36:12 [INFO] [stdout] | [INFO] [stdout] 35 | impl SinglyLinkedList { [INFO] [stdout] | --------------------------- associated items in this implementation [INFO] [stdout] 36 | pub fn new(data: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 41 | pub fn append(&mut self, data: T) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 48 | pub fn head(&self) -> &ListItem { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 52 | pub fn tail(&self) -> &ListItem { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/linked_list_rc.rs:6:22 [INFO] [stdout] | [INFO] [stdout] 6 | fn inner_element(&self) -> Ref> ; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 6 | fn inner_element(&self) -> Ref<'_, ListItem> ; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/linked_list_rc.rs:22:23 [INFO] [stdout] | [INFO] [stdout] 22 | fn inner_element(&self) -> Ref> { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 22 | fn inner_element(&self) -> Ref<'_, ListItem> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s [INFO] running `Command { std: "docker" "inspect" "9bc5da781e19a080bb44c69c02b6bdf4dd56aa2b852c2c26fb97cff9ea3d2059", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9bc5da781e19a080bb44c69c02b6bdf4dd56aa2b852c2c26fb97cff9ea3d2059", kill_on_drop: false }` [INFO] [stdout] 9bc5da781e19a080bb44c69c02b6bdf4dd56aa2b852c2c26fb97cff9ea3d2059 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a02803968b3e29f6d071bc92c0fdb3f9186e7ad6f554d0325fb33f67c0277bcc [INFO] running `Command { std: "docker" "start" "-a" "a02803968b3e29f6d071bc92c0fdb3f9186e7ad6f554d0325fb33f67c0277bcc", kill_on_drop: false }` [INFO] [stderr] Compiling singly_linked_list v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `ListItem` is never constructed [INFO] [stdout] --> src/linked_list.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | pub struct ListItem { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SinglyLinkedList` is never constructed [INFO] [stdout] --> src/linked_list.rs:9:12 [INFO] [stdout] | [INFO] [stdout] 9 | pub struct SinglyLinkedList { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `next`, `data`, and `as_mut` are never used [INFO] [stdout] --> src/linked_list.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 13 | impl ListItem { [INFO] [stdout] | ------------------- associated items in this implementation [INFO] [stdout] 14 | fn new(data: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 20 | pub fn next(&self) -> Option<&Self> { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 27 | pub fn data(&self) -> &T { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 30 | fn as_mut(&mut self) -> &mut Self { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `append`, `head`, and `tail` are never used [INFO] [stdout] --> src/linked_list.rs:36:12 [INFO] [stdout] | [INFO] [stdout] 35 | impl SinglyLinkedList { [INFO] [stdout] | --------------------------- associated items in this implementation [INFO] [stdout] 36 | pub fn new(data: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 41 | pub fn append(&mut self, data: T) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 48 | pub fn head(&self) -> &ListItem { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 52 | pub fn tail(&self) -> &ListItem { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/linked_list_rc.rs:6:22 [INFO] [stdout] | [INFO] [stdout] 6 | fn inner_element(&self) -> Ref> ; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 6 | fn inner_element(&self) -> Ref<'_, ListItem> ; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/linked_list_rc.rs:22:23 [INFO] [stdout] | [INFO] [stdout] 22 | fn inner_element(&self) -> Ref> { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 22 | fn inner_element(&self) -> Ref<'_, ListItem> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s [INFO] running `Command { std: "docker" "inspect" "a02803968b3e29f6d071bc92c0fdb3f9186e7ad6f554d0325fb33f67c0277bcc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a02803968b3e29f6d071bc92c0fdb3f9186e7ad6f554d0325fb33f67c0277bcc", kill_on_drop: false }` [INFO] [stdout] a02803968b3e29f6d071bc92c0fdb3f9186e7ad6f554d0325fb33f67c0277bcc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 8b0f8dffc5b61113321471d3c17eb62b51392b9950ef86dfd2b4868e36081536 [INFO] running `Command { std: "docker" "start" "-a" "8b0f8dffc5b61113321471d3c17eb62b51392b9950ef86dfd2b4868e36081536", kill_on_drop: false }` [INFO] [stderr] warning: struct `ListItem` is never constructed [INFO] [stderr] --> src/linked_list.rs:3:12 [INFO] [stderr] | [INFO] [stderr] 3 | pub struct ListItem { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: struct `SinglyLinkedList` is never constructed [INFO] [stderr] --> src/linked_list.rs:9:12 [INFO] [stderr] | [INFO] [stderr] 9 | pub struct SinglyLinkedList { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated items `new`, `next`, `data`, and `as_mut` are never used [INFO] [stderr] --> src/linked_list.rs:14:8 [INFO] [stderr] | [INFO] [stderr] 13 | impl ListItem { [INFO] [stderr] | ------------------- associated items in this implementation [INFO] [stderr] 14 | fn new(data: T) -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] ... [INFO] [stderr] 20 | pub fn next(&self) -> Option<&Self> { [INFO] [stderr] | ^^^^ [INFO] [stderr] ... [INFO] [stderr] 27 | pub fn data(&self) -> &T { [INFO] [stderr] | ^^^^ [INFO] [stderr] ... [INFO] [stderr] 30 | fn as_mut(&mut self) -> &mut Self { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated items `new`, `append`, `head`, and `tail` are never used [INFO] [stderr] --> src/linked_list.rs:36:12 [INFO] [stderr] | [INFO] [stderr] 35 | impl SinglyLinkedList { [INFO] [stderr] | --------------------------- associated items in this implementation [INFO] [stderr] 36 | pub fn new(data: T) -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] ... [INFO] [stderr] 41 | pub fn append(&mut self, data: T) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 48 | pub fn head(&self) -> &ListItem { [INFO] [stderr] | ^^^^ [INFO] [stderr] ... [INFO] [stderr] 52 | pub fn tail(&self) -> &ListItem { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/linked_list_rc.rs:6:22 [INFO] [stderr] | [INFO] [stderr] 6 | fn inner_element(&self) -> Ref> ; [INFO] [stderr] | ^^^^^ ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 6 | fn inner_element(&self) -> Ref<'_, ListItem> ; [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/linked_list_rc.rs:22:23 [INFO] [stderr] | [INFO] [stderr] 22 | fn inner_element(&self) -> Ref> { [INFO] [stderr] | ^^^^^ ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 22 | fn inner_element(&self) -> Ref<'_, ListItem> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: `singly_linked_list` (bin "singly_linked_list" test) generated 6 warnings (run `cargo fix --bin "singly_linked_list" --tests` to apply 2 suggestions) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/singly_linked_list-55df897c25a9b75d) [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] running `Command { std: "docker" "inspect" "8b0f8dffc5b61113321471d3c17eb62b51392b9950ef86dfd2b4868e36081536", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8b0f8dffc5b61113321471d3c17eb62b51392b9950ef86dfd2b4868e36081536", kill_on_drop: false }` [INFO] [stdout] 8b0f8dffc5b61113321471d3c17eb62b51392b9950ef86dfd2b4868e36081536