[INFO] cloning repository https://github.com/karv1c/algorithms-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/karv1c/algorithms-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarv1c%2Falgorithms-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarv1c%2Falgorithms-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b93aae626621c6ac0fb6efa11c596fad18f48f6
[INFO] testing karv1c/algorithms-rust against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarv1c%2Falgorithms-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/karv1c/algorithms-rust
[INFO] finished tweaking git repo https://github.com/karv1c/algorithms-rust
[INFO] tweaked toml for git repo https://github.com/karv1c/algorithms-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/karv1c/algorithms-rust on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/karv1c/algorithms-rust 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7474c6a57e9a9e8624e9f1bdfc789b59783632934d84a8f8f09ccbad87a5506
[INFO] running `Command { std: "docker" "start" "-a" "d7474c6a57e9a9e8624e9f1bdfc789b59783632934d84a8f8f09ccbad87a5506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7474c6a57e9a9e8624e9f1bdfc789b59783632934d84a8f8f09ccbad87a5506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7474c6a57e9a9e8624e9f1bdfc789b59783632934d84a8f8f09ccbad87a5506", kill_on_drop: false }`
[INFO] [stdout] d7474c6a57e9a9e8624e9f1bdfc789b59783632934d84a8f8f09ccbad87a5506
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a381e9e732a106e7c9f0600aab29ea58404efcce774cf2a80853c870c3ce83e
[INFO] running `Command { std: "docker" "start" "-a" "0a381e9e732a106e7c9f0600aab29ea58404efcce774cf2a80853c870c3ce83e", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "0a381e9e732a106e7c9f0600aab29ea58404efcce774cf2a80853c870c3ce83e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a381e9e732a106e7c9f0600aab29ea58404efcce774cf2a80853c870c3ce83e", kill_on_drop: false }`
[INFO] [stdout] 0a381e9e732a106e7c9f0600aab29ea58404efcce774cf2a80853c870c3ce83e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4c291bc14406e462e1df572d9c3cf80c171ad8812560989e2eafb773b422e9b
[INFO] running `Command { std: "docker" "start" "-a" "a4c291bc14406e462e1df572d9c3cf80c171ad8812560989e2eafb773b422e9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `right` is never read
[INFO] [stdout]   --> examples/valid_parentheses.rs:11:25
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut right = 0;
[INFO] [stdout]    |                         ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 43 |                     right = i;
[INFO] [stdout]    |                     --------- `right` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "a4c291bc14406e462e1df572d9c3cf80c171ad8812560989e2eafb773b422e9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4c291bc14406e462e1df572d9c3cf80c171ad8812560989e2eafb773b422e9b", kill_on_drop: false }`
[INFO] [stdout] a4c291bc14406e462e1df572d9c3cf80c171ad8812560989e2eafb773b422e9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8538be4d0d19af0fe9990bd2f0983bc106b0f1225f34a184be7978bb298c24f2
[INFO] running `Command { std: "docker" "start" "-a" "8538be4d0d19af0fe9990bd2f0983bc106b0f1225f34a184be7978bb298c24f2", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `right` is never read
[INFO] [stderr]   --> examples/valid_parentheses.rs:11:25
[INFO] [stderr]    |
[INFO] [stderr] 11 |         let mut right = 0;
[INFO] [stderr]    |                         ^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 43 |                     right = i;
[INFO] [stderr]    |                     --------- `right` is overwritten here before the previous value is read
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (example "valid_parentheses") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/leetcode-ee0b067cb99cfd5a)
[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" "8538be4d0d19af0fe9990bd2f0983bc106b0f1225f34a184be7978bb298c24f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8538be4d0d19af0fe9990bd2f0983bc106b0f1225f34a184be7978bb298c24f2", kill_on_drop: false }`
[INFO] [stdout] 8538be4d0d19af0fe9990bd2f0983bc106b0f1225f34a184be7978bb298c24f2