[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 2)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 3)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 4)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 5)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 6)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 7)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 8)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 9)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 10)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 11)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 12)
[INFO] cloning repository https://github.com/yatender-oktalk/algoexpert-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yatender-oktalk/algoexpert-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9e02f19fe2c5807d58ee590fd220c7209e74da93
[INFO] checking yatender-oktalk/algoexpert-rust against master#fce0e74720d199eb7839fdb51af35ac5226da178 for pr-145262
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyatender-oktalk%2Falgoexpert-rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yatender-oktalk/algoexpert-rust
[INFO] finished tweaking git repo https://github.com/yatender-oktalk/algoexpert-rust
[INFO] tweaked toml for git repo https://github.com/yatender-oktalk/algoexpert-rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yatender-oktalk/algoexpert-rust on toolchain fce0e74720d199eb7839fdb51af35ac5226da178
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fce0e74720d199eb7839fdb51af35ac5226da178" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yatender-oktalk/algoexpert-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" "+fce0e74720d199eb7839fdb51af35ac5226da178" "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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+fce0e74720d199eb7839fdb51af35ac5226da178" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74c14889d01605a12fa6bd7688354b7eff20f6b222ed6298433734a86baaa3f4
[INFO] running `Command { std: "docker" "start" "-a" "74c14889d01605a12fa6bd7688354b7eff20f6b222ed6298433734a86baaa3f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74c14889d01605a12fa6bd7688354b7eff20f6b222ed6298433734a86baaa3f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74c14889d01605a12fa6bd7688354b7eff20f6b222ed6298433734a86baaa3f4", kill_on_drop: false }`
[INFO] [stdout] 74c14889d01605a12fa6bd7688354b7eff20f6b222ed6298433734a86baaa3f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+fce0e74720d199eb7839fdb51af35ac5226da178" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 908e30a221ca0d4648e00e386220b0a93609bda0796146621e3c0a24c0bcad98
[INFO] running `Command { std: "docker" "start" "-a" "908e30a221ca0d4648e00e386220b0a93609bda0796146621e3c0a24c0bcad98", kill_on_drop: false }`
[INFO] [stderr]     Checking algoexpert-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/array/missing_element.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TreeFunctions` is never used
[INFO] [stdout]   --> src/tree/tree.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait TreeFunctions<T> {
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `balanced_paranthesis` is never used
[INFO] [stdout]  --> src/stack/paranthesis_checker.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn balanced_paranthesis(data: &str) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TreeFunctions` is never used
[INFO] [stdout]   --> src/tree/tree.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait TreeFunctions<T> {
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "908e30a221ca0d4648e00e386220b0a93609bda0796146621e3c0a24c0bcad98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "908e30a221ca0d4648e00e386220b0a93609bda0796146621e3c0a24c0bcad98", kill_on_drop: false }`
[INFO] [stdout] 908e30a221ca0d4648e00e386220b0a93609bda0796146621e3c0a24c0bcad98