[INFO] cloning repository https://github.com/sampolgar/signed-merkle-proof
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sampolgar/signed-merkle-proof" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsampolgar%2Fsigned-merkle-proof", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsampolgar%2Fsigned-merkle-proof'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a0f32d86796bb994fef4435ecd5a94b059bcff67
[INFO] checking sampolgar/signed-merkle-proof against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsampolgar%2Fsigned-merkle-proof" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sampolgar/signed-merkle-proof on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sampolgar/signed-merkle-proof
[INFO] finished tweaking git repo https://github.com/sampolgar/signed-merkle-proof
[INFO] tweaked toml for git repo https://github.com/sampolgar/signed-merkle-proof written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sampolgar/signed-merkle-proof 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ab94473c16a6c45d9b705c36fc6f6bfc118160ace35139b0459a7785490330a
[INFO] running `Command { std: "docker" "start" "-a" "8ab94473c16a6c45d9b705c36fc6f6bfc118160ace35139b0459a7785490330a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ab94473c16a6c45d9b705c36fc6f6bfc118160ace35139b0459a7785490330a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab94473c16a6c45d9b705c36fc6f6bfc118160ace35139b0459a7785490330a", kill_on_drop: false }`
[INFO] [stdout] 8ab94473c16a6c45d9b705c36fc6f6bfc118160ace35139b0459a7785490330a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 605a7d9cd10043b569fac88f65fd46db8f850058bc9caa26e9c300eaf67005e3
[INFO] running `Command { std: "docker" "start" "-a" "605a7d9cd10043b569fac88f65fd46db8f850058bc9caa26e9c300eaf67005e3", kill_on_drop: false }`
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.7
[INFO] [stderr]     Checking signed-merkle-proof v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::my_hash::simple_hash`
[INFO] [stdout]   --> src/merkle_tree.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::my_hash::simple_hash;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/binary_tree.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BinaryTree` is never constructed
[INFO] [stdout]  --> src/binary_tree.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct BinaryTree {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `bfs`, and `dfs` are never used
[INFO] [stdout]   --> src/binary_tree.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl BinaryTree {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 12 |     //create new binary tree
[INFO] [stdout] 13 |     fn new() -> BinaryTree {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn insert(&mut self, value: i32) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn bfs(&self) -> Option<Vec<i32>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn dfs(&self) -> Option<Vec<i32>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/merkle_tree.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MerkleTree` is never constructed
[INFO] [stdout]   --> src/merkle_tree.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct MerkleTree {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, and `update_root` are never used
[INFO] [stdout]   --> src/merkle_tree.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl MerkleTree {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 25 |     //create new binary tree
[INFO] [stdout] 26 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn insert(&mut self, hash: [u16; 16]) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn update_root(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_2to1` is never used
[INFO] [stdout]   --> src/my_hash.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn simple_2to1(hash1: &[u16; 16], hash2: &[u16; 16]) -> [u16; 16] {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "605a7d9cd10043b569fac88f65fd46db8f850058bc9caa26e9c300eaf67005e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "605a7d9cd10043b569fac88f65fd46db8f850058bc9caa26e9c300eaf67005e3", kill_on_drop: false }`
[INFO] [stdout] 605a7d9cd10043b569fac88f65fd46db8f850058bc9caa26e9c300eaf67005e3