[INFO] cloning repository https://github.com/priyansh71/rust_practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/priyansh71/rust_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpriyansh71%2Frust_practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpriyansh71%2Frust_practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b1cb0f27e13c53fd72dd62f2fc2fd4287debacd
[INFO] building priyansh71/rust_practice against master#87788097b776f8e3662f76627944230684b671bd for pr-101591
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpriyansh71%2Frust_practice" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/priyansh71/rust_practice on toolchain 87788097b776f8e3662f76627944230684b671bd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+87788097b776f8e3662f76627944230684b671bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/priyansh71/rust_practice
[INFO] finished tweaking git repo https://github.com/priyansh71/rust_practice
[INFO] tweaked toml for git repo https://github.com/priyansh71/rust_practice written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/priyansh71/rust_practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+87788097b776f8e3662f76627944230684b671bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+87788097b776f8e3662f76627944230684b671bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ff9a7b2b010ed440ed44f2aee9401ec474c26d672035899b5b5c6d202a70d3d
[INFO] running `Command { std: "docker" "start" "-a" "9ff9a7b2b010ed440ed44f2aee9401ec474c26d672035899b5b5c6d202a70d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ff9a7b2b010ed440ed44f2aee9401ec474c26d672035899b5b5c6d202a70d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ff9a7b2b010ed440ed44f2aee9401ec474c26d672035899b5b5c6d202a70d3d", kill_on_drop: false }`
[INFO] [stdout] 9ff9a7b2b010ed440ed44f2aee9401ec474c26d672035899b5b5c6d202a70d3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+87788097b776f8e3662f76627944230684b671bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0eb53544003884cd81b7d4e2d260b5bf0301c5be3a9006ba8467a6333f1008b9
[INFO] running `Command { std: "docker" "start" "-a" "0eb53544003884cd81b7d4e2d260b5bf0301c5be3a9006ba8467a6333f1008b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `hell` is never used
[INFO] [stdout]   --> src/advanced/traits.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn hell<T : Summary + Clone>(item: T) {
[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 5.63s
[INFO] running `Command { std: "docker" "inspect" "0eb53544003884cd81b7d4e2d260b5bf0301c5be3a9006ba8467a6333f1008b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eb53544003884cd81b7d4e2d260b5bf0301c5be3a9006ba8467a6333f1008b9", kill_on_drop: false }`
[INFO] [stdout] 0eb53544003884cd81b7d4e2d260b5bf0301c5be3a9006ba8467a6333f1008b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+87788097b776f8e3662f76627944230684b671bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 883b62c00c5fb710998332ad53e33405cae83ad412f0ae6ea5734a6047bce46d
[INFO] running `Command { std: "docker" "start" "-a" "883b62c00c5fb710998332ad53e33405cae83ad412f0ae6ea5734a6047bce46d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `hell` is never used
[INFO] [stdout]   --> src/advanced/traits.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn hell<T : Summary + Clone>(item: T) {
[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 test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "883b62c00c5fb710998332ad53e33405cae83ad412f0ae6ea5734a6047bce46d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "883b62c00c5fb710998332ad53e33405cae83ad412f0ae6ea5734a6047bce46d", kill_on_drop: false }`
[INFO] [stdout] 883b62c00c5fb710998332ad53e33405cae83ad412f0ae6ea5734a6047bce46d