[INFO] cloning repository https://github.com/qrdean/rust_hello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qrdean/rust_hello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqrdean%2Frust_hello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqrdean%2Frust_hello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 060caf4f553ad43cfca121a2ccd437a286c8fcdf
[INFO] testing qrdean/rust_hello against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqrdean%2Frust_hello" "/workspace/builds/worker-25/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-25/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/qrdean/rust_hello on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/qrdean/rust_hello
[INFO] finished tweaking git repo https://github.com/qrdean/rust_hello
[INFO] tweaked toml for git repo https://github.com/qrdean/rust_hello written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] crate git repo https://github.com/qrdean/rust_hello already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6b364b38492ede26f38b6da08820592072f8ad1537bea01f6d3e465aa090e17
[INFO] running `Command { std: "docker" "start" "-a" "c6b364b38492ede26f38b6da08820592072f8ad1537bea01f6d3e465aa090e17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6b364b38492ede26f38b6da08820592072f8ad1537bea01f6d3e465aa090e17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6b364b38492ede26f38b6da08820592072f8ad1537bea01f6d3e465aa090e17", kill_on_drop: false }`
[INFO] [stdout] c6b364b38492ede26f38b6da08820592072f8ad1537bea01f6d3e465aa090e17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e53a6474c4801e8e254ff579c9ec5beff2bf2f553d6877eb5fe81354421eacf5
[INFO] running `Command { std: "docker" "start" "-a" "e53a6474c4801e8e254ff579c9ec5beff2bf2f553d6877eb5fe81354421eacf5", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_world v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/main.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let x: i32;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` 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 0.54s
[INFO] running `Command { std: "docker" "inspect" "e53a6474c4801e8e254ff579c9ec5beff2bf2f553d6877eb5fe81354421eacf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e53a6474c4801e8e254ff579c9ec5beff2bf2f553d6877eb5fe81354421eacf5", kill_on_drop: false }`
[INFO] [stdout] e53a6474c4801e8e254ff579c9ec5beff2bf2f553d6877eb5fe81354421eacf5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b14e1489f281efc33c397e389d2f6d0a8ca6af38e51ee21177bbf8865e8acec5
[INFO] running `Command { std: "docker" "start" "-a" "b14e1489f281efc33c397e389d2f6d0a8ca6af38e51ee21177bbf8865e8acec5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling hello_world v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/main.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let x: i32;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` 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 1.14s
[INFO] running `Command { std: "docker" "inspect" "b14e1489f281efc33c397e389d2f6d0a8ca6af38e51ee21177bbf8865e8acec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b14e1489f281efc33c397e389d2f6d0a8ca6af38e51ee21177bbf8865e8acec5", kill_on_drop: false }`
[INFO] [stdout] b14e1489f281efc33c397e389d2f6d0a8ca6af38e51ee21177bbf8865e8acec5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 97c7a859c30dd2c4d35311316a270bdbad0849b6fa86c2323a3cb41808d70c2a
[INFO] running `Command { std: "docker" "start" "-a" "97c7a859c30dd2c4d35311316a270bdbad0849b6fa86c2323a3cb41808d70c2a", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]  --> src/main.rs:2:6
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let x: i32;
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `hello_world` (bin "hello_world" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hello_world-4f080943b8397fba)
[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" "97c7a859c30dd2c4d35311316a270bdbad0849b6fa86c2323a3cb41808d70c2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97c7a859c30dd2c4d35311316a270bdbad0849b6fa86c2323a3cb41808d70c2a", kill_on_drop: false }`
[INFO] [stdout] 97c7a859c30dd2c4d35311316a270bdbad0849b6fa86c2323a3cb41808d70c2a