[INFO] cloning repository https://github.com/dmidem/merkle_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dmidem/merkle_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmidem%2Fmerkle_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmidem%2Fmerkle_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2363908751c7591d56b01fca1560dc217beb1340
[INFO] checking dmidem/merkle_tree against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmidem%2Fmerkle_tree" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dmidem/merkle_tree on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dmidem/merkle_tree
[INFO] finished tweaking git repo https://github.com/dmidem/merkle_tree
[INFO] tweaked toml for git repo https://github.com/dmidem/merkle_tree written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dmidem/merkle_tree 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d391342bc270578bc54dd4e24a0bff55c93182abf97a2f5f8f3bee11b055f07a
[INFO] running `Command { std: "docker" "start" "-a" "d391342bc270578bc54dd4e24a0bff55c93182abf97a2f5f8f3bee11b055f07a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d391342bc270578bc54dd4e24a0bff55c93182abf97a2f5f8f3bee11b055f07a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d391342bc270578bc54dd4e24a0bff55c93182abf97a2f5f8f3bee11b055f07a", kill_on_drop: false }`
[INFO] [stdout] d391342bc270578bc54dd4e24a0bff55c93182abf97a2f5f8f3bee11b055f07a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42c665084f9c2d234268858485ca8792d11dbae5de61eea2bcb6e61ea81b5e8e
[INFO] running `Command { std: "docker" "start" "-a" "42c665084f9c2d234268858485ca8792d11dbae5de61eea2bcb6e61ea81b5e8e", kill_on_drop: false }`
[INFO] [stderr]     Checking merkle_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `name`, `size`, and `chunk_size` are never read
[INFO] [stdout]   --> examples/src/file_server.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub struct FileInfo<'a> {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 73 |     pub name: &'a std::ffi::OsStr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 74 |     pub size: u64,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 75 |     pub root_hash: &'a Hash,
[INFO] [stdout] 76 |     pub chunk_size: usize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "42c665084f9c2d234268858485ca8792d11dbae5de61eea2bcb6e61ea81b5e8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c665084f9c2d234268858485ca8792d11dbae5de61eea2bcb6e61ea81b5e8e", kill_on_drop: false }`
[INFO] [stdout] 42c665084f9c2d234268858485ca8792d11dbae5de61eea2bcb6e61ea81b5e8e