[INFO] cloning repository https://github.com/dark64/opt-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dark64/opt-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdark64%2Fopt-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdark64%2Fopt-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f7e2f4b175e0777319e3333b7c9fd1e56b52566
[INFO] testing dark64/opt-playground against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdark64%2Fopt-playground" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dark64/opt-playground on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dark64/opt-playground
[INFO] finished tweaking git repo https://github.com/dark64/opt-playground
[INFO] tweaked toml for git repo https://github.com/dark64/opt-playground written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/dark64/opt-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d3127462e3b5ffa015ae6198f3837013a18ea319bf663a95243df4fa24bd6f6
[INFO] running `Command { std: "docker" "start" "-a" "9d3127462e3b5ffa015ae6198f3837013a18ea319bf663a95243df4fa24bd6f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d3127462e3b5ffa015ae6198f3837013a18ea319bf663a95243df4fa24bd6f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d3127462e3b5ffa015ae6198f3837013a18ea319bf663a95243df4fa24bd6f6", kill_on_drop: false }`
[INFO] [stdout] 9d3127462e3b5ffa015ae6198f3837013a18ea319bf663a95243df4fa24bd6f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9c757895e97a1a84443feca21652122f1786cc486022aadf75f78c470e1a6fd
[INFO] running `Command { std: "docker" "start" "-a" "e9c757895e97a1a84443feca21652122f1786cc486022aadf75f78c470e1a6fd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling opt-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `arguments`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub arguments: Vec<T>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `statements`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub statements: Vec<T>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 40s
[INFO] running `Command { std: "docker" "inspect" "e9c757895e97a1a84443feca21652122f1786cc486022aadf75f78c470e1a6fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9c757895e97a1a84443feca21652122f1786cc486022aadf75f78c470e1a6fd", kill_on_drop: false }`
[INFO] [stdout] e9c757895e97a1a84443feca21652122f1786cc486022aadf75f78c470e1a6fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93ec39741f0ca591f160268fad665a13d809dea10b2c135cb0bd2dbf65b8475c
[INFO] running `Command { std: "docker" "start" "-a" "93ec39741f0ca591f160268fad665a13d809dea10b2c135cb0bd2dbf65b8475c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling opt-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 25.11s
[INFO] running `Command { std: "docker" "inspect" "93ec39741f0ca591f160268fad665a13d809dea10b2c135cb0bd2dbf65b8475c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93ec39741f0ca591f160268fad665a13d809dea10b2c135cb0bd2dbf65b8475c", kill_on_drop: false }`
[INFO] [stdout] 93ec39741f0ca591f160268fad665a13d809dea10b2c135cb0bd2dbf65b8475c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1dd9419a38d4aa3c1d3596ce60a022331b2e73c689453209c9d9613a6764d9a4
[INFO] running `Command { std: "docker" "start" "-a" "1dd9419a38d4aa3c1d3596ce60a022331b2e73c689453209c9d9613a6764d9a4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.79s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/opt_playground-9be8a57f94260aa9)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::run_seq ... ok
[INFO] [stdout] test tests::run_iter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1dd9419a38d4aa3c1d3596ce60a022331b2e73c689453209c9d9613a6764d9a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dd9419a38d4aa3c1d3596ce60a022331b2e73c689453209c9d9613a6764d9a4", kill_on_drop: false }`
[INFO] [stdout] 1dd9419a38d4aa3c1d3596ce60a022331b2e73c689453209c9d9613a6764d9a4