[INFO] cloning repository https://github.com/rafalpiotrowski/mlabvm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rafalpiotrowski/mlabvm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafalpiotrowski%2Fmlabvm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafalpiotrowski%2Fmlabvm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48308a463c15f9a10779cfe800330bc072143f5b
[INFO] checking rafalpiotrowski/mlabvm against try#e071e73523bfcdcab2878dbf652ac8ebb9b9eee4 for pr-144386
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafalpiotrowski%2Fmlabvm" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rafalpiotrowski/mlabvm
[INFO] finished tweaking git repo https://github.com/rafalpiotrowski/mlabvm
[INFO] tweaked toml for git repo https://github.com/rafalpiotrowski/mlabvm written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rafalpiotrowski/mlabvm on toolchain e071e73523bfcdcab2878dbf652ac8ebb9b9eee4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e071e73523bfcdcab2878dbf652ac8ebb9b9eee4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rafalpiotrowski/mlabvm 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" "+e071e73523bfcdcab2878dbf652ac8ebb9b9eee4" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e071e73523bfcdcab2878dbf652ac8ebb9b9eee4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7ffb4d632b601fc9a1c60ca7b0a908c22be8367ac62045022354177a5948a5b
[INFO] running `Command { std: "docker" "start" "-a" "d7ffb4d632b601fc9a1c60ca7b0a908c22be8367ac62045022354177a5948a5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7ffb4d632b601fc9a1c60ca7b0a908c22be8367ac62045022354177a5948a5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7ffb4d632b601fc9a1c60ca7b0a908c22be8367ac62045022354177a5948a5b", kill_on_drop: false }`
[INFO] [stdout] d7ffb4d632b601fc9a1c60ca7b0a908c22be8367ac62045022354177a5948a5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e071e73523bfcdcab2878dbf652ac8ebb9b9eee4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 047c2b8e87c1cda437e54a22446a3396ce77485fccf37b6e01d25aada440ce48
[INFO] running `Command { std: "docker" "start" "-a" "047c2b8e87c1cda437e54a22446a3396ce77485fccf37b6e01d25aada440ce48", kill_on_drop: false }`
[INFO] [stderr]     Checking mlabvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/main.rs:83:18
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Loop(count) => {
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/main.rs:83:18
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Loop(count) => {
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "047c2b8e87c1cda437e54a22446a3396ce77485fccf37b6e01d25aada440ce48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "047c2b8e87c1cda437e54a22446a3396ce77485fccf37b6e01d25aada440ce48", kill_on_drop: false }`
[INFO] [stdout] 047c2b8e87c1cda437e54a22446a3396ce77485fccf37b6e01d25aada440ce48