[INFO] cloning repository https://github.com/hegde-atri/rust_practice [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hegde-atri/rust_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhegde-atri%2Frust_practice", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhegde-atri%2Frust_practice'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] db9291cba66d96216e22386e399989cf6c036636 [INFO] checking hegde-atri/rust_practice against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhegde-atri%2Frust_practice" "/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/hegde-atri/rust_practice 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/hegde-atri/rust_practice [INFO] finished tweaking git repo https://github.com/hegde-atri/rust_practice [INFO] tweaked toml for git repo https://github.com/hegde-atri/rust_practice written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/hegde-atri/rust_practice 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-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2aa1851125b52ea608d21698756eca2dc0f9e192e4a2b1f62ace7d3d208cbd7d [INFO] running `Command { std: "docker" "start" "-a" "2aa1851125b52ea608d21698756eca2dc0f9e192e4a2b1f62ace7d3d208cbd7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2aa1851125b52ea608d21698756eca2dc0f9e192e4a2b1f62ace7d3d208cbd7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2aa1851125b52ea608d21698756eca2dc0f9e192e4a2b1f62ace7d3d208cbd7d", kill_on_drop: false }` [INFO] [stdout] 2aa1851125b52ea608d21698756eca2dc0f9e192e4a2b1f62ace7d3d208cbd7d [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ce4d21dce716528f2a7e8ae9de4276c4e38aed8f4143cfcc66824723a716962a [INFO] running `Command { std: "docker" "start" "-a" "ce4d21dce716528f2a7e8ae9de4276c4e38aed8f4143cfcc66824723a716962a", 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] Compiling libc v0.2.139 [INFO] [stderr] Checking arrayvec v0.7.2 [INFO] [stderr] Checking itoa v1.0.5 [INFO] [stderr] Checking jug_search_com1005 v0.1.0 (/opt/rustwide/workdir/general/jug_search_com1005) [INFO] [stderr] Checking longest_common_prefix v0.1.0 (/opt/rustwide/workdir/leetcode/longest_common_prefix) [INFO] [stderr] Checking longest_unique_substring v0.1.0 (/opt/rustwide/workdir/leetcode/longest_unique_substring) [INFO] [stderr] Checking merge_two_sorted_lists_22 v0.1.0 (/opt/rustwide/workdir/leetcode/merge_two_sorted_lists_22) [INFO] [stderr] Checking pow v0.1.0 (/opt/rustwide/workdir/leetcode/pow) [INFO] [stderr] Checking generate_parentheses_22 v0.1.0 (/opt/rustwide/workdir/leetcode/generate_parentheses_22) [INFO] [stderr] Checking two_sum v0.1.0 (/opt/rustwide/workdir/leetcode/two_sum) [INFO] [stderr] Checking sorting v0.1.0 (/opt/rustwide/workdir/general/sorting) [INFO] [stderr] Checking palindrome_number v0.1.0 (/opt/rustwide/workdir/leetcode/palindrome_number) [INFO] [stderr] Checking add_two_numbers v0.1.0 (/opt/rustwide/workdir/leetcode/add_two_numbers) [INFO] [stderr] Checking atoi v0.1.0 (/opt/rustwide/workdir/leetcode/atoi) [INFO] [stderr] Checking merge_k_sorted_lists_23 v0.1.0 (/opt/rustwide/workdir/leetcode/merge_k_sorted_lists_23) [INFO] [stderr] Checking median_two_sorted_arrays v0.1.0 (/opt/rustwide/workdir/leetcode/median_two_sorted_arrays) [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> leetcode/merge_two_sorted_lists_22/src/main.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 9 | impl ListNode { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] 10 | #[inline] [INFO] [stdout] 11 | fn new(val: i32) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking reverse_integer v0.1.0 (/opt/rustwide/workdir/leetcode/reverse_integer) [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking container_with_most_water v0.1.0 (/opt/rustwide/workdir/leetcode/container_with_most_water) [INFO] [stderr] Checking valid_parentheses v0.1.0 (/opt/rustwide/workdir/leetcode/valid_parentheses) [INFO] [stdout] warning: unused variable: `least` [INFO] [stdout] --> leetcode/merge_k_sorted_lists_23/src/main.rs:19:17 [INFO] [stdout] | [INFO] [stdout] 19 | let mut least: i32; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_least` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `lists` [INFO] [stdout] --> leetcode/merge_k_sorted_lists_23/src/main.rs:18:26 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn merge_k_lists(lists: Vec>>) -> Option> { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_lists` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> leetcode/merge_k_sorted_lists_23/src/main.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 9 | impl ListNode { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] 10 | #[inline] [INFO] [stdout] 11 | fn new(val: i32) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `helper` is never used [INFO] [stdout] --> leetcode/merge_k_sorted_lists_23/src/main.rs:21:12 [INFO] [stdout] | [INFO] [stdout] 21 | fn helper() -> Option> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> leetcode/merge_two_sorted_lists_22/src/main.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> leetcode/merge_two_sorted_lists_22/src/main.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 9 | impl ListNode { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] 10 | #[inline] [INFO] [stdout] 11 | fn new(val: i32) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> leetcode/merge_k_sorted_lists_23/src/main.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `least` [INFO] [stdout] --> leetcode/merge_k_sorted_lists_23/src/main.rs:19:17 [INFO] [stdout] | [INFO] [stdout] 19 | let mut least: i32; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_least` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `lists` [INFO] [stdout] --> leetcode/merge_k_sorted_lists_23/src/main.rs:18:26 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn merge_k_lists(lists: Vec>>) -> Option> { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_lists` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> leetcode/merge_k_sorted_lists_23/src/main.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 9 | impl ListNode { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] 10 | #[inline] [INFO] [stdout] 11 | fn new(val: i32) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `helper` is never used [INFO] [stdout] --> leetcode/merge_k_sorted_lists_23/src/main.rs:21:12 [INFO] [stdout] | [INFO] [stdout] 21 | fn helper() -> Option> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking num-format v0.4.4 [INFO] [stderr] Checking getrandom v0.2.8 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking calculate_pi v0.1.0 (/opt/rustwide/workdir/general/calculate_pi) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.29s [INFO] running `Command { std: "docker" "inspect" "ce4d21dce716528f2a7e8ae9de4276c4e38aed8f4143cfcc66824723a716962a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ce4d21dce716528f2a7e8ae9de4276c4e38aed8f4143cfcc66824723a716962a", kill_on_drop: false }` [INFO] [stdout] ce4d21dce716528f2a7e8ae9de4276c4e38aed8f4143cfcc66824723a716962a