[INFO] cloning repository https://github.com/marckraw/rust-for-typescript-developers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marckraw/rust-for-typescript-developers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarckraw%2Frust-for-typescript-developers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarckraw%2Frust-for-typescript-developers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc7eb4fbcadfefa9c7bc3e9f14c16b0f186277a8
[INFO] checking marckraw/rust-for-typescript-developers against master#1fe72d35998dea48aeecaf7fc07783b0b553f24f for pr-154992-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarckraw%2Frust-for-typescript-developers" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/marckraw/rust-for-typescript-developers
[INFO] finished tweaking git repo https://github.com/marckraw/rust-for-typescript-developers
[INFO] tweaked toml for git repo https://github.com/marckraw/rust-for-typescript-developers written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/marckraw/rust-for-typescript-developers on toolchain 1fe72d35998dea48aeecaf7fc07783b0b553f24f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/marckraw/rust-for-typescript-developers 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" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ae1d1b8bb3fd50c4f71ae48d634d8c6d776f3f32ef87f718dae9aa32317e31f
[INFO] running `Command { std: "docker" "start" "-a" "2ae1d1b8bb3fd50c4f71ae48d634d8c6d776f3f32ef87f718dae9aa32317e31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ae1d1b8bb3fd50c4f71ae48d634d8c6d776f3f32ef87f718dae9aa32317e31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ae1d1b8bb3fd50c4f71ae48d634d8c6d776f3f32ef87f718dae9aa32317e31f", kill_on_drop: false }`
[INFO] [stdout] 2ae1d1b8bb3fd50c4f71ae48d634d8c6d776f3f32ef87f718dae9aa32317e31f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 768070b1ceb2cd9ebdb706c0fa422ec43190e04291ca8158cb76f518db220faa
[INFO] running `Command { std: "docker" "start" "-a" "768070b1ceb2cd9ebdb706c0fa422ec43190e04291ca8158cb76f518db220faa", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-for-typescript-developers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `bar`
[INFO] [stdout]   --> src/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let bar = foo.unwrap(); // takes a value form foo (even if it can be undefined, dangerous)
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_bar`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bar`
[INFO] [stdout]   --> src/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let bar = foo.unwrap(); // takes a value form foo (even if it can be undefined, dangerous)
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_bar`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "768070b1ceb2cd9ebdb706c0fa422ec43190e04291ca8158cb76f518db220faa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "768070b1ceb2cd9ebdb706c0fa422ec43190e04291ca8158cb76f518db220faa", kill_on_drop: false }`
[INFO] [stdout] 768070b1ceb2cd9ebdb706c0fa422ec43190e04291ca8158cb76f518db220faa