[INFO] cloning repository https://github.com/proshunsuke/fizzbuzz-rust-ver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/proshunsuke/fizzbuzz-rust-ver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fproshunsuke%2Ffizzbuzz-rust-ver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fproshunsuke%2Ffizzbuzz-rust-ver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 552ff4fc901fddbd1dcbc439f4f114a6af9942c3
[INFO] checking proshunsuke/fizzbuzz-rust-ver against master#e652caa679a304af11fc04f1f12452f255a82593 for pr-98000
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fproshunsuke%2Ffizzbuzz-rust-ver" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/proshunsuke/fizzbuzz-rust-ver on toolchain e652caa679a304af11fc04f1f12452f255a82593
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/proshunsuke/fizzbuzz-rust-ver
[INFO] finished tweaking git repo https://github.com/proshunsuke/fizzbuzz-rust-ver
[INFO] tweaked toml for git repo https://github.com/proshunsuke/fizzbuzz-rust-ver written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/proshunsuke/fizzbuzz-rust-ver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75047b99abaf903c2fd64b5e0651b55fa26c383c6d71c2f26e79317ad0ac9a9f
[INFO] running `Command { std: "docker" "start" "-a" "75047b99abaf903c2fd64b5e0651b55fa26c383c6d71c2f26e79317ad0ac9a9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75047b99abaf903c2fd64b5e0651b55fa26c383c6d71c2f26e79317ad0ac9a9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75047b99abaf903c2fd64b5e0651b55fa26c383c6d71c2f26e79317ad0ac9a9f", kill_on_drop: false }`
[INFO] [stdout] 75047b99abaf903c2fd64b5e0651b55fa26c383c6d71c2f26e79317ad0ac9a9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72fc7b1a26d57ac6581e26f794c266cd20bf5a62dc545337b2527958953bf8a5
[INFO] running `Command { std: "docker" "start" "-a" "72fc7b1a26d57ac6581e26f794c266cd20bf5a62dc545337b2527958953bf8a5", kill_on_drop: false }`
[INFO] [stderr]     Checking RustFizzBuzz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `RustFizzBuzz` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_fizz_buzz`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustFizzBuzz` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_fizz_buzz`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustFizzBuzz` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_fizz_buzz`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustFizzBuzz` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_fizz_buzz`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "72fc7b1a26d57ac6581e26f794c266cd20bf5a62dc545337b2527958953bf8a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72fc7b1a26d57ac6581e26f794c266cd20bf5a62dc545337b2527958953bf8a5", kill_on_drop: false }`
[INFO] [stdout] 72fc7b1a26d57ac6581e26f794c266cd20bf5a62dc545337b2527958953bf8a5