[INFO] cloning repository https://github.com/shakesbeare/leet-code [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shakesbeare/leet-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshakesbeare%2Fleet-code", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshakesbeare%2Fleet-code'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2dc6fc1aa27f2312281ad8023623e538a411ea9c [INFO] checking shakesbeare/leet-code against master#2f3dc46465c04d10cb74d34b1bd80c3ebfdc05bf for pr-128725 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshakesbeare%2Fleet-code" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/shakesbeare/leet-code on toolchain 2f3dc46465c04d10cb74d34b1bd80c3ebfdc05bf [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2f3dc46465c04d10cb74d34b1bd80c3ebfdc05bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/shakesbeare/leet-code [INFO] finished tweaking git repo https://github.com/shakesbeare/leet-code [INFO] tweaked toml for git repo https://github.com/shakesbeare/leet-code written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/shakesbeare/leet-code 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" "+2f3dc46465c04d10cb74d34b1bd80c3ebfdc05bf" "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] checking shakesbeare/leet-code against try#9c7f973c4f483238f1484927772d0446e5686cc0 for pr-128725 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshakesbeare%2Fleet-code" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/shakesbeare/leet-code on toolchain 9c7f973c4f483238f1484927772d0446e5686cc0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7f973c4f483238f1484927772d0446e5686cc0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/shakesbeare/leet-code [INFO] finished tweaking git repo https://github.com/shakesbeare/leet-code [INFO] tweaked toml for git repo https://github.com/shakesbeare/leet-code written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/shakesbeare/leet-code 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" "+9c7f973c4f483238f1484927772d0446e5686cc0" "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 [ERROR] error running command: no output for 300 seconds [INFO] checking shakesbeare/leet-code against try#9c7f973c4f483238f1484927772d0446e5686cc0 for pr-128725 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshakesbeare%2Fleet-code" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/shakesbeare/leet-code on toolchain 9c7f973c4f483238f1484927772d0446e5686cc0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7f973c4f483238f1484927772d0446e5686cc0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/shakesbeare/leet-code [INFO] finished tweaking git repo https://github.com/shakesbeare/leet-code [INFO] tweaked toml for git repo https://github.com/shakesbeare/leet-code written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/shakesbeare/leet-code 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" "+9c7f973c4f483238f1484927772d0446e5686cc0" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+9c7f973c4f483238f1484927772d0446e5686cc0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9ff6cc73dc6852d7531ad3f4437b6e3cf4d85482d0de7ea7c996d77638966473 [INFO] running `Command { std: "docker" "start" "-a" "9ff6cc73dc6852d7531ad3f4437b6e3cf4d85482d0de7ea7c996d77638966473", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9ff6cc73dc6852d7531ad3f4437b6e3cf4d85482d0de7ea7c996d77638966473", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9ff6cc73dc6852d7531ad3f4437b6e3cf4d85482d0de7ea7c996d77638966473", kill_on_drop: false }` [INFO] [stdout] 9ff6cc73dc6852d7531ad3f4437b6e3cf4d85482d0de7ea7c996d77638966473 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+9c7f973c4f483238f1484927772d0446e5686cc0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 76ea42b90ab15e501aee416b05e3754842435e74a41883fa8933f5a39eeb774f [INFO] running `Command { std: "docker" "start" "-a" "76ea42b90ab15e501aee416b05e3754842435e74a41883fa8933f5a39eeb774f", kill_on_drop: false }` [INFO] [stderr] Checking regular_expression_matching v0.1.0 (/opt/rustwide/workdir/regular_expression_matching) [INFO] [stderr] Checking longest_common_prefix v0.1.0 (/opt/rustwide/workdir/longest_common_prefix) [INFO] [stderr] Checking roman_to_integer v0.1.0 (/opt/rustwide/workdir/roman_to_integer) [INFO] [stderr] Checking valid_parentheses v0.1.0 (/opt/rustwide/workdir/valid_parentheses) [INFO] [stdout] warning: unused variable: `p_iter` [INFO] [stdout] --> regular_expression_matching/src/lib.rs:7:17 [INFO] [stdout] | [INFO] [stdout] 7 | let mut p_iter = p.chars().peekable(); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_p_iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s_iter` [INFO] [stdout] --> regular_expression_matching/src/lib.rs:8:17 [INFO] [stdout] | [INFO] [stdout] 8 | let mut s_iter = s.chars(); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_s_iter` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> regular_expression_matching/src/lib.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let mut p_iter = p.chars().peekable(); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> regular_expression_matching/src/lib.rs:8:13 [INFO] [stdout] | [INFO] [stdout] 8 | let mut s_iter = s.chars(); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Solution` is never constructed [INFO] [stdout] --> longest_common_prefix/src/lib.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct Solution; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `longest_common_prefix` is never used [INFO] [stdout] --> longest_common_prefix/src/lib.rs:4:12 [INFO] [stdout] | [INFO] [stdout] 3 | impl Solution { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] 4 | pub fn longest_common_prefix(strs: Vec) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `is_valid` is never used [INFO] [stdout] --> valid_parentheses/src/lib.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 21 | impl Solution { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] 22 | fn is_valid(s: String) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `is_valid` is never used [INFO] [stdout] --> valid_parentheses/src/lib.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 21 | impl Solution { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] 22 | fn is_valid(s: String) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Solution` is never constructed [INFO] [stdout] --> longest_common_prefix/src/lib.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct Solution; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `p_iter` [INFO] [stdout] --> regular_expression_matching/src/lib.rs:7:17 [INFO] [stdout] | [INFO] [stdout] 7 | let mut p_iter = p.chars().peekable(); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_p_iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s_iter` [INFO] [stdout] --> regular_expression_matching/src/lib.rs:8:17 [INFO] [stdout] | [INFO] [stdout] 8 | let mut s_iter = s.chars(); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_s_iter` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `longest_common_prefix` is never used [INFO] [stdout] --> longest_common_prefix/src/lib.rs:4:12 [INFO] [stdout] | [INFO] [stdout] 3 | impl Solution { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] 4 | pub fn longest_common_prefix(strs: Vec) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> regular_expression_matching/src/lib.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let mut p_iter = p.chars().peekable(); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> regular_expression_matching/src/lib.rs:8:13 [INFO] [stdout] | [INFO] [stdout] 8 | let mut s_iter = s.chars(); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s [INFO] running `Command { std: "docker" "inspect" "76ea42b90ab15e501aee416b05e3754842435e74a41883fa8933f5a39eeb774f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "76ea42b90ab15e501aee416b05e3754842435e74a41883fa8933f5a39eeb774f", kill_on_drop: false }` [INFO] [stdout] 76ea42b90ab15e501aee416b05e3754842435e74a41883fa8933f5a39eeb774f