[INFO] cloning repository https://github.com/xudifsd/rust_leet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xudifsd/rust_leet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxudifsd%2Frust_leet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxudifsd%2Frust_leet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e00a584e28efb1d38fcd92ba490e402f8e1b6b2f
[INFO] testing xudifsd/rust_leet against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxudifsd%2Frust_leet" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xudifsd/rust_leet on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xudifsd/rust_leet
[INFO] finished tweaking git repo https://github.com/xudifsd/rust_leet
[INFO] tweaked toml for git repo https://github.com/xudifsd/rust_leet written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/xudifsd/rust_leet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2eff57d6b9e7a41b5acc210b142c796f6e1e7cdc9aaf64391f6444c8ee69974
[INFO] running `Command { std: "docker" "start" "-a" "d2eff57d6b9e7a41b5acc210b142c796f6e1e7cdc9aaf64391f6444c8ee69974", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2eff57d6b9e7a41b5acc210b142c796f6e1e7cdc9aaf64391f6444c8ee69974", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2eff57d6b9e7a41b5acc210b142c796f6e1e7cdc9aaf64391f6444c8ee69974", kill_on_drop: false }`
[INFO] [stdout] d2eff57d6b9e7a41b5acc210b142c796f6e1e7cdc9aaf64391f6444c8ee69974
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b7184ad7dec2c5182ab49239f938e9564653a9ec8ec8ce4e1a0e0b287febc6b
[INFO] running `Command { std: "docker" "start" "-a" "7b7184ad7dec2c5182ab49239f938e9564653a9ec8ec8ce4e1a0e0b287febc6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling leetcode_test v0.1.1
[INFO] [stderr]    Compiling leetcode_prelude v0.2.2
[INFO] [stderr]    Compiling rust_leet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `tail`
[INFO] [stdout]   --> src/design_linked_list.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     tail: Rc<RefCell<MyListNode>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.43s
[INFO] running `Command { std: "docker" "inspect" "7b7184ad7dec2c5182ab49239f938e9564653a9ec8ec8ce4e1a0e0b287febc6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b7184ad7dec2c5182ab49239f938e9564653a9ec8ec8ce4e1a0e0b287febc6b", kill_on_drop: false }`
[INFO] [stdout] 7b7184ad7dec2c5182ab49239f938e9564653a9ec8ec8ce4e1a0e0b287febc6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 309be8c7868cd4168a71c6f68cd226dab96498e7e76714fa70c0fa84f73419be
[INFO] running `Command { std: "docker" "start" "-a" "309be8c7868cd4168a71c6f68cd226dab96498e7e76714fa70c0fa84f73419be", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_leet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `tail`
[INFO] [stdout]   --> src/design_linked_list.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     tail: Rc<RefCell<MyListNode>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "309be8c7868cd4168a71c6f68cd226dab96498e7e76714fa70c0fa84f73419be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "309be8c7868cd4168a71c6f68cd226dab96498e7e76714fa70c0fa84f73419be", kill_on_drop: false }`
[INFO] [stdout] 309be8c7868cd4168a71c6f68cd226dab96498e7e76714fa70c0fa84f73419be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 217f672976d68fd24ddff207685f8ac296dabe81351e04807fb3011a2f8a5485
[INFO] running `Command { std: "docker" "start" "-a" "217f672976d68fd24ddff207685f8ac296dabe81351e04807fb3011a2f8a5485", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: field is never read: `tail`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/design_linked_list.rs:47:5
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 47 |     tail: Rc<RefCell<MyListNode>>,
[INFO] [stdout] 
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_leet` (bin "rust_leet" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_leet-3cc2e4738eee2046)
[INFO] running `Command { std: "docker" "inspect" "217f672976d68fd24ddff207685f8ac296dabe81351e04807fb3011a2f8a5485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "217f672976d68fd24ddff207685f8ac296dabe81351e04807fb3011a2f8a5485", kill_on_drop: false }`
[INFO] [stdout] 217f672976d68fd24ddff207685f8ac296dabe81351e04807fb3011a2f8a5485