[INFO] cloning repository https://github.com/urey-hiker/rustList_test [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/urey-hiker/rustList_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furey-hiker%2FrustList_test", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furey-hiker%2FrustList_test'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1610c6408e4c9cf2174d38915a4a3b79659124ae [INFO] testing urey-hiker/rustList_test against master#ff2c56344c764af598ad33027e9c7a48881808ef for pr-118825 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furey-hiker%2FrustList_test" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/urey-hiker/rustList_test on toolchain ff2c56344c764af598ad33027e9c7a48881808ef [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff2c56344c764af598ad33027e9c7a48881808ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/urey-hiker/rustList_test [INFO] finished tweaking git repo https://github.com/urey-hiker/rustList_test [INFO] tweaked toml for git repo https://github.com/urey-hiker/rustList_test written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/urey-hiker/rustList_test 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" "+ff2c56344c764af598ad33027e9c7a48881808ef" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] testing urey-hiker/rustList_test against try#5e4273472e1b2f223618a9b3def795f6224f241d for pr-118825 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furey-hiker%2FrustList_test" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/urey-hiker/rustList_test on toolchain 5e4273472e1b2f223618a9b3def795f6224f241d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/urey-hiker/rustList_test [INFO] finished tweaking git repo https://github.com/urey-hiker/rustList_test [INFO] tweaked toml for git repo https://github.com/urey-hiker/rustList_test written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/urey-hiker/rustList_test 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" "+5e4273472e1b2f223618a9b3def795f6224f241d" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 258f4dd449a0d7505871eb306184582cac0bd6814a3d617a0f890f55883141b5 [INFO] running `Command { std: "docker" "start" "-a" "258f4dd449a0d7505871eb306184582cac0bd6814a3d617a0f890f55883141b5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "258f4dd449a0d7505871eb306184582cac0bd6814a3d617a0f890f55883141b5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "258f4dd449a0d7505871eb306184582cac0bd6814a3d617a0f890f55883141b5", kill_on_drop: false }` [INFO] [stdout] 258f4dd449a0d7505871eb306184582cac0bd6814a3d617a0f890f55883141b5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 26e0a9319da92b21e10b938f0518b09a105fc6c922fdddf74dd4c053340ac98e [INFO] running `Command { std: "docker" "start" "-a" "26e0a9319da92b21e10b938f0518b09a105fc6c922fdddf74dd4c053340ac98e", kill_on_drop: false }` [INFO] [stderr] Compiling list_test v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `val` is never read [INFO] [stdout] --> src/listC.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 7 | struct Node { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 8 | val: T, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `List` is never constructed [INFO] [stdout] --> src/listC.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | struct List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple associated items are never used [INFO] [stdout] --> src/listC.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 37 | impl List { [INFO] [stdout] | ----------------------------- associated items in this implementation [INFO] [stdout] 38 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 45 | fn IntoIter(&mut self) -> Inter { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 51 | fn push(&mut self, v: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 66 | fn pop_front(&mut self) -> Link { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 80 | fn pop_front_val(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 94 | fn peek_front(&self) -> Option { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 103 | fn peek_front_ref(&self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 111 | fn peek_front_refMut(&self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `IntoIter` should have a snake case name [INFO] [stdout] --> src/listC.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | fn IntoIter(&mut self) -> Inter { [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to snake case: `into_iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `peek_front_refMut` should have a snake case name [INFO] [stdout] --> src/listC.rs:111:8 [INFO] [stdout] | [INFO] [stdout] 111 | fn peek_front_refMut(&self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `peek_front_ref_mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.30s [INFO] running `Command { std: "docker" "inspect" "26e0a9319da92b21e10b938f0518b09a105fc6c922fdddf74dd4c053340ac98e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "26e0a9319da92b21e10b938f0518b09a105fc6c922fdddf74dd4c053340ac98e", kill_on_drop: false }` [INFO] [stdout] 26e0a9319da92b21e10b938f0518b09a105fc6c922fdddf74dd4c053340ac98e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6ba58c9e888b6cf2786f6c6845e1b85c1339ca46ccb8192a113d3232b02f5ffe [INFO] running `Command { std: "docker" "start" "-a" "6ba58c9e888b6cf2786f6c6845e1b85c1339ca46ccb8192a113d3232b02f5ffe", kill_on_drop: false }` [INFO] [stdout] warning: field `val` is never read [INFO] [stdout] --> src/listC.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 7 | struct Node { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 8 | val: T, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling list_test v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `List` is never constructed [INFO] [stdout] --> src/listC.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | struct List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple associated items are never used [INFO] [stdout] --> src/listC.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 37 | impl List { [INFO] [stdout] | ----------------------------- associated items in this implementation [INFO] [stdout] 38 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 45 | fn IntoIter(&mut self) -> Inter { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 51 | fn push(&mut self, v: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 66 | fn pop_front(&mut self) -> Link { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 80 | fn pop_front_val(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 94 | fn peek_front(&self) -> Option { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 103 | fn peek_front_ref(&self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 111 | fn peek_front_refMut(&self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `IntoIter` should have a snake case name [INFO] [stdout] --> src/listC.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | fn IntoIter(&mut self) -> Inter { [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to snake case: `into_iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `peek_front_refMut` should have a snake case name [INFO] [stdout] --> src/listC.rs:111:8 [INFO] [stdout] | [INFO] [stdout] 111 | fn peek_front_refMut(&self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `peek_front_ref_mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `peek_front` is never used [INFO] [stdout] --> src/listC.rs:94:8 [INFO] [stdout] | [INFO] [stdout] 37 | impl List { [INFO] [stdout] | ----------------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 94 | fn peek_front(&self) -> Option { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `IntoIter` should have a snake case name [INFO] [stdout] --> src/listC.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | fn IntoIter(&mut self) -> Inter { [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to snake case: `into_iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `peek_front_refMut` should have a snake case name [INFO] [stdout] --> src/listC.rs:111:8 [INFO] [stdout] | [INFO] [stdout] 111 | fn peek_front_refMut(&self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `peek_front_ref_mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ListC` should have a snake case name [INFO] [stdout] --> src/listC.rs:124:8 [INFO] [stdout] | [INFO] [stdout] 124 | fn ListC() { [INFO] [stdout] | ^^^^^ help: convert the identifier to snake case: `list_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.68s [INFO] running `Command { std: "docker" "inspect" "6ba58c9e888b6cf2786f6c6845e1b85c1339ca46ccb8192a113d3232b02f5ffe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6ba58c9e888b6cf2786f6c6845e1b85c1339ca46ccb8192a113d3232b02f5ffe", kill_on_drop: false }` [INFO] [stdout] 6ba58c9e888b6cf2786f6c6845e1b85c1339ca46ccb8192a113d3232b02f5ffe [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 7cc17a768e4545f134f8590be9d286137058050fa61d5f057ee4e1bd57cf57e2 [INFO] running `Command { std: "docker" "start" "-a" "7cc17a768e4545f134f8590be9d286137058050fa61d5f057ee4e1bd57cf57e2", kill_on_drop: false }` [INFO] [stderr] warning: field `val` is never read [INFO] [stderr] --> src/listC.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 7 | struct Node { [INFO] [stderr] | ---- field in this struct [INFO] [stderr] 8 | val: T, [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: struct `List` is never constructed [INFO] [stderr] --> src/listC.rs:12:8 [INFO] [stderr] | [INFO] [stderr] 12 | struct List { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: multiple associated items are never used [INFO] [stderr] --> src/listC.rs:38:8 [INFO] [stderr] | [INFO] [stderr] 37 | impl List { [INFO] [stderr] | ----------------------------- associated items in this implementation [INFO] [stderr] 38 | fn new() -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] ... [INFO] [stderr] 45 | fn IntoIter(&mut self) -> Inter { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 51 | fn push(&mut self, v: T) { [INFO] [stderr] | ^^^^ [INFO] [stderr] ... [INFO] [stderr] 66 | fn pop_front(&mut self) -> Link { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 80 | fn pop_front_val(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 94 | fn peek_front(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 103 | fn peek_front_ref(&self) -> Option> { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 111 | fn peek_front_refMut(&self) -> Option> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method `IntoIter` should have a snake case name [INFO] [stderr] --> src/listC.rs:45:8 [INFO] [stderr] | [INFO] [stderr] 45 | fn IntoIter(&mut self) -> Inter { [INFO] [stderr] | ^^^^^^^^ help: convert the identifier to snake case: `into_iter` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method `peek_front_refMut` should have a snake case name [INFO] [stderr] --> src/listC.rs:111:8 [INFO] [stderr] | [INFO] [stderr] 111 | fn peek_front_refMut(&self) -> Option> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `peek_front_ref_mut` [INFO] [stderr] [INFO] [stderr] warning: `list_test` (lib) generated 5 warnings [INFO] [stderr] warning: method `peek_front` is never used [INFO] [stderr] --> src/listC.rs:94:8 [INFO] [stderr] | [INFO] [stderr] 37 | impl List { [INFO] [stderr] | ----------------------------- method in this implementation [INFO] [stderr] ... [INFO] [stderr] 94 | fn peek_front(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function `ListC` should have a snake case name [INFO] [stderr] --> src/listC.rs:124:8 [INFO] [stderr] | [INFO] [stderr] 124 | fn ListC() { [INFO] [stderr] | ^^^^^ help: convert the identifier to snake case: `list_c` [INFO] [stderr] [INFO] [stderr] warning: `list_test` (lib test) generated 4 warnings (2 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests src/listC.rs (/opt/rustwide/target/debug/deps/list_test-ef2ae594cc48da63) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/list_test-9a9c2f6958cf648e) [INFO] [stdout] test test::ListC ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests list_test [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] [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" "7cc17a768e4545f134f8590be9d286137058050fa61d5f057ee4e1bd57cf57e2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7cc17a768e4545f134f8590be9d286137058050fa61d5f057ee4e1bd57cf57e2", kill_on_drop: false }` [INFO] [stdout] 7cc17a768e4545f134f8590be9d286137058050fa61d5f057ee4e1bd57cf57e2