[INFO] cloning repository https://github.com/Sameperson/DPC
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sameperson/DPC" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSameperson%2FDPC", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSameperson%2FDPC'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d751bed696b270d3dd8476d8b6c6f693d8e8924
[INFO] checking Sameperson/DPC against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSameperson%2FDPC" "/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/Sameperson/DPC
[INFO] finished tweaking git repo https://github.com/Sameperson/DPC
[INFO] tweaked toml for git repo https://github.com/Sameperson/DPC written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Sameperson/DPC on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Sameperson/DPC 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking Sameperson/DPC against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSameperson%2FDPC" "/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/Sameperson/DPC
[INFO] finished tweaking git repo https://github.com/Sameperson/DPC
[INFO] tweaked toml for git repo https://github.com/Sameperson/DPC written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Sameperson/DPC on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Sameperson/DPC 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bellman v0.14.0
[INFO] [stderr]   Downloaded bls12_381 v0.8.0
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9170690aa6c80691718bdf8275426bc3e9baf5228a5f5515afe99449b53d3e4
[INFO] running `Command { std: "docker" "start" "-a" "c9170690aa6c80691718bdf8275426bc3e9baf5228a5f5515afe99449b53d3e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9170690aa6c80691718bdf8275426bc3e9baf5228a5f5515afe99449b53d3e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9170690aa6c80691718bdf8275426bc3e9baf5228a5f5515afe99449b53d3e4", kill_on_drop: false }`
[INFO] [stdout] c9170690aa6c80691718bdf8275426bc3e9baf5228a5f5515afe99449b53d3e4
[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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ccc547dfe54711a4426e5348dc356f2e482ed11407dec0388cebb6668801a254
[INFO] running `Command { std: "docker" "start" "-a" "ccc547dfe54711a4426e5348dc356f2e482ed11407dec0388cebb6668801a254", kill_on_drop: false }`
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking getrandom v0.2.14
[INFO] [stderr]     Checking blake2s_simd v1.0.2
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking der v0.7.9
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-bigint v0.5.5
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking spki v0.7.3
[INFO] [stderr]     Checking rfc6979 v0.4.0
[INFO] [stderr]     Checking pkcs8 v0.10.2
[INFO] [stderr]     Checking sec1 v0.7.3
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]     Checking elliptic-curve v0.13.8
[INFO] [stderr]     Checking pairing v0.23.0
[INFO] [stderr]     Checking bellman v0.14.0
[INFO] [stderr]     Checking bls12_381 v0.8.0
[INFO] [stderr]     Checking primeorder v0.13.6
[INFO] [stderr]     Checking ecdsa v0.16.9
[INFO] [stderr]     Checking p256 v0.13.2
[INFO] [stderr]     Checking DPC v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ff::Field`
[INFO] [stdout]  --> src/zkp/circuit.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ff::Field;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Signer` and `Verifier`
[INFO] [stdout]  --> src/main.rs:6:57
[INFO] [stdout]   |
[INFO] [stdout] 6 | use p256::ecdsa::{SigningKey, VerifyingKey, signature::{Signer, Verifier}};
[INFO] [stdout]   |                                                         ^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Display`
[INFO] [stdout]  --> src/main.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::fmt::{Display};
[INFO] [stdout]   |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ff::Field`
[INFO] [stdout]  --> src/zkp/circuit.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ff::Field;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Signer` and `Verifier`
[INFO] [stdout]  --> src/main.rs:6:57
[INFO] [stdout]   |
[INFO] [stdout] 6 | use p256::ecdsa::{SigningKey, VerifyingKey, signature::{Signer, Verifier}};
[INFO] [stdout]   |                                                         ^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Display`
[INFO] [stdout]  --> src/main.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::fmt::{Display};
[INFO] [stdout]   |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Digest`
[INFO] [stdout]  --> src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use sha2::{Digest};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Digest`
[INFO] [stdout]  --> src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use sha2::{Digest};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Blockchain` is never constructed
[INFO] [stdout]  --> src/blockchain.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Blockchain {
[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 items `new`, `create_genesis_block`, `add_block`, and `is_valid` are never used
[INFO] [stdout]   --> src/blockchain.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Blockchain {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new(signing_key: SigningKey, verifying_key: VerifyingKey) -> Blockchain {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn create_genesis_block(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn add_block(&mut self, data: String, patient_id: String, event_type: String) -> Result<(), &'static str> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn is_valid(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.58s
[INFO] running `Command { std: "docker" "inspect" "ccc547dfe54711a4426e5348dc356f2e482ed11407dec0388cebb6668801a254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccc547dfe54711a4426e5348dc356f2e482ed11407dec0388cebb6668801a254", kill_on_drop: false }`
[INFO] [stdout] ccc547dfe54711a4426e5348dc356f2e482ed11407dec0388cebb6668801a254