[INFO] cloning repository https://github.com/arrayappy/merkle-tree-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arrayappy/merkle-tree-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farrayappy%2Fmerkle-tree-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farrayappy%2Fmerkle-tree-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5ba9d41cbed99b31ad4e28b9d1a037f186939f33
[INFO] checking arrayappy/merkle-tree-rs against try#f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 for pr-147834
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farrayappy%2Fmerkle-tree-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/arrayappy/merkle-tree-rs
[INFO] finished tweaking git repo https://github.com/arrayappy/merkle-tree-rs
[INFO] tweaked toml for git repo https://github.com/arrayappy/merkle-tree-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arrayappy/merkle-tree-rs on toolchain f77b5bc6c7c84df104f86b0dd01d9490e3923fa8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/arrayappy/merkle-tree-rs 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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking arrayappy/merkle-tree-rs against try#f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 for pr-147834
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farrayappy%2Fmerkle-tree-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/arrayappy/merkle-tree-rs
[INFO] finished tweaking git repo https://github.com/arrayappy/merkle-tree-rs
[INFO] tweaked toml for git repo https://github.com/arrayappy/merkle-tree-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arrayappy/merkle-tree-rs on toolchain f77b5bc6c7c84df104f86b0dd01d9490e3923fa8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/arrayappy/merkle-tree-rs 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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 891d8d7849210b1c807393802eb0791e3da68be576e69e924b64c98c6be02bb2
[INFO] running `Command { std: "docker" "start" "-a" "891d8d7849210b1c807393802eb0791e3da68be576e69e924b64c98c6be02bb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "891d8d7849210b1c807393802eb0791e3da68be576e69e924b64c98c6be02bb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "891d8d7849210b1c807393802eb0791e3da68be576e69e924b64c98c6be02bb2", kill_on_drop: false }`
[INFO] [stdout] 891d8d7849210b1c807393802eb0791e3da68be576e69e924b64c98c6be02bb2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 342e774a0287256ff89900da255d5ed897ab97d7abd8ba80447a15382031de22
[INFO] running `Command { std: "docker" "start" "-a" "342e774a0287256ff89900da255d5ed897ab97d7abd8ba80447a15382031de22", kill_on_drop: false }`
[INFO] [stderr]     Checking cpufeatures v0.2.14
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking merkle-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `MerkelNode` is never constructed
[INFO] [stdout]  --> src/main.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct MerkelNode {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl MerkelNode {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 13 |     fn new(data: String) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `MerkelNodePair` is never used
[INFO] [stdout]   --> src/main.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 | type MerkelNodePair = (MerkelNode, MerkelNode);
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MerkleTree` is never constructed
[INFO] [stdout]   --> src/main.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct MerkleTree {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sha256_hash` is never used
[INFO] [stdout]   --> src/main.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn sha256_hash<T: AsRef<[u8]>>(input: T) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `create`, `build_merkle_tree`, `get_proof`, and `verify_proof` are never used
[INFO] [stdout]    --> src/main.rs:37:8
[INFO] [stdout]     |
[INFO] [stdout]  36 | impl MerkleTree {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout]  37 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  42 |     fn create<T: AsRef<[u8]> + Clone + Display + Debug>(&mut self, data: &mut Vec<T>) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  68 |     fn build_merkle_tree(&mut self, merkle_pairs: Vec<MerkelNodePair>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |     fn get_proof(&self, data: &str) -> Option<Vec<String>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 139 |     fn verify_proof(&self, data: &str, proof: &[String]) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_tree` is never used
[INFO] [stdout]    --> src/main.rs:152:4
[INFO] [stdout]     |
[INFO] [stdout] 152 | fn print_tree(tree: &MerkleTree) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reduce_string` is never used
[INFO] [stdout]    --> src/main.rs:173:4
[INFO] [stdout]     |
[INFO] [stdout] 173 | fn reduce_string(input: String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "342e774a0287256ff89900da255d5ed897ab97d7abd8ba80447a15382031de22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "342e774a0287256ff89900da255d5ed897ab97d7abd8ba80447a15382031de22", kill_on_drop: false }`
[INFO] [stdout] 342e774a0287256ff89900da255d5ed897ab97d7abd8ba80447a15382031de22
