[INFO] cloning repository https://github.com/bhupendrakushwahaup95/my_rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bhupendrakushwahaup95/my_rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbhupendrakushwahaup95%2Fmy_rust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbhupendrakushwahaup95%2Fmy_rust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2091bfc1f1ba0b6a57caa8fb91b5cc04ce6968c
[INFO] checking bhupendrakushwahaup95/my_rust_study against 1.95.0-beta.7 for beta-1.95-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbhupendrakushwahaup95%2Fmy_rust_study" "/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/bhupendrakushwahaup95/my_rust_study
[INFO] finished tweaking git repo https://github.com/bhupendrakushwahaup95/my_rust_study
[INFO] tweaked toml for git repo https://github.com/bhupendrakushwahaup95/my_rust_study written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bhupendrakushwahaup95/my_rust_study on toolchain 1.95.0-beta.7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bhupendrakushwahaup95/my_rust_study 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" "+1.95.0-beta.7" "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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07e2d22e4155063d6804f20047e674a1a098b9f1bc9f244d2eb83c39950828f0
[INFO] running `Command { std: "docker" "start" "-a" "07e2d22e4155063d6804f20047e674a1a098b9f1bc9f244d2eb83c39950828f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07e2d22e4155063d6804f20047e674a1a098b9f1bc9f244d2eb83c39950828f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07e2d22e4155063d6804f20047e674a1a098b9f1bc9f244d2eb83c39950828f0", kill_on_drop: false }`
[INFO] [stdout] 07e2d22e4155063d6804f20047e674a1a098b9f1bc9f244d2eb83c39950828f0
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.95.0-beta.7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f654fc347245e01e14c921f94906a70ceb1ce8a6193e4b455692292e304600c8
[INFO] running `Command { std: "docker" "start" "-a" "f654fc347245e01e14c921f94906a70ceb1ce8a6193e4b455692292e304600c8", kill_on_drop: false }`
[INFO] [stderr]     Checking my_rust_study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/for_keyword.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     'tier_loop: for tier in &tiers {
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/label_keyword.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             'question_level: for q in 1..=5 {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/for_keyword.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     'tier_loop: for tier in &tiers {
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/label_keyword.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             'question_level: for q in 1..=5 {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "f654fc347245e01e14c921f94906a70ceb1ce8a6193e4b455692292e304600c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f654fc347245e01e14c921f94906a70ceb1ce8a6193e4b455692292e304600c8", kill_on_drop: false }`
[INFO] [stdout] f654fc347245e01e14c921f94906a70ceb1ce8a6193e4b455692292e304600c8
