[INFO] cloning repository https://github.com/nyavro/rust-bc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nyavro/rust-bc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyavro%2Frust-bc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyavro%2Frust-bc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4b26090ffedae2f3c96e90fdb9b01ca0032b27ba
[INFO] checking nyavro/rust-bc against try#6757d700f93f6d16c8b39cf79e96b019bd570e7d for pr-155299
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyavro%2Frust-bc" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nyavro/rust-bc
[INFO] finished tweaking git repo https://github.com/nyavro/rust-bc
[INFO] tweaked toml for git repo https://github.com/nyavro/rust-bc written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nyavro/rust-bc on toolchain 6757d700f93f6d16c8b39cf79e96b019bd570e7d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nyavro/rust-bc 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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "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 nyavro/rust-bc against try#6757d700f93f6d16c8b39cf79e96b019bd570e7d for pr-155299
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyavro%2Frust-bc" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nyavro/rust-bc
[INFO] finished tweaking git repo https://github.com/nyavro/rust-bc
[INFO] tweaked toml for git repo https://github.com/nyavro/rust-bc written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nyavro/rust-bc on toolchain 6757d700f93f6d16c8b39cf79e96b019bd570e7d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nyavro/rust-bc 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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "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 data-encoding v2.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0eebbafafe7964b8592b81b35499bf291a7fdd6cc64750eb16e1051504cd07a6
[INFO] running `Command { std: "docker" "start" "-a" "0eebbafafe7964b8592b81b35499bf291a7fdd6cc64750eb16e1051504cd07a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0eebbafafe7964b8592b81b35499bf291a7fdd6cc64750eb16e1051504cd07a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eebbafafe7964b8592b81b35499bf291a7fdd6cc64750eb16e1051504cd07a6", kill_on_drop: false }`
[INFO] [stdout] 0eebbafafe7964b8592b81b35499bf291a7fdd6cc64750eb16e1051504cd07a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31983ffdfd1f89817b95ddda84579a01f2e03900a514d822556f937ded422979
[INFO] running `Command { std: "docker" "start" "-a" "31983ffdfd1f89817b95ddda84579a01f2e03900a514d822556f937ded422979", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]     Checking data-encoding v2.7.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking rust-bc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `SystemTime` and `UNIX_EPOCH`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::{SystemTime, UNIX_EPOCH};
[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: `Deserialize` and `Serialize`
[INFO] [stdout]  --> src/block.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `data_encoding::HEXLOWER`
[INFO] [stdout]  --> src/proof_of_work.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use data_encoding::HEXLOWER;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> src/proof_of_work.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num_bigint::{BigInt, Sign};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/proof_of_work.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::ShlAssign`
[INFO] [stdout]  --> src/proof_of_work.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::ShlAssign;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SystemTime` and `UNIX_EPOCH`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::{SystemTime, UNIX_EPOCH};
[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: `Deserialize` and `Serialize`
[INFO] [stdout]  --> src/block.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `data_encoding::HEXLOWER`
[INFO] [stdout]  --> src/proof_of_work.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use data_encoding::HEXLOWER;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> src/proof_of_work.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num_bigint::{BigInt, Sign};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/proof_of_work.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::ShlAssign`
[INFO] [stdout]  --> src/proof_of_work.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::ShlAssign;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_data`
[INFO] [stdout]  --> src/proof_of_work.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn proof_of_work(block_data: &DataBlock) -> (String, i64) {
[INFO] [stdout]   |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_data`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/proof_of_work.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let target: BigInt = BigInt::from(1) << (256 - TARGET_BITS);//BigInt::from(1).shl_assign(rhs);    
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Transaction` is never constructed
[INFO] [stdout]  --> src/data_block.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Transaction {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataBlock` is never constructed
[INFO] [stdout]  --> src/data_block.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct DataBlock {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Block` is never constructed
[INFO] [stdout]  --> src/block.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Block {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/block.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Block {    
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 14 |     pub fn new(pre_block_hash: String, transactions: &[Transaction], height: usize) -> Self {           
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TARGET_BITS` is never used
[INFO] [stdout]  --> src/proof_of_work.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const TARGET_BITS: i32 = 8; 
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `proof_of_work` is never used
[INFO] [stdout]  --> src/proof_of_work.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn proof_of_work(block_data: &DataBlock) -> (String, i64) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_data`
[INFO] [stdout]  --> src/proof_of_work.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn proof_of_work(block_data: &DataBlock) -> (String, i64) {
[INFO] [stdout]   |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_data`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/proof_of_work.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let target: BigInt = BigInt::from(1) << (256 - TARGET_BITS);//BigInt::from(1).shl_assign(rhs);    
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Transaction` is never constructed
[INFO] [stdout]  --> src/data_block.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Transaction {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataBlock` is never constructed
[INFO] [stdout]  --> src/data_block.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct DataBlock {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Block` is never constructed
[INFO] [stdout]  --> src/block.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Block {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/block.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Block {    
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 14 |     pub fn new(pre_block_hash: String, transactions: &[Transaction], height: usize) -> Self {           
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TARGET_BITS` is never used
[INFO] [stdout]  --> src/proof_of_work.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const TARGET_BITS: i32 = 8; 
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `proof_of_work` is never used
[INFO] [stdout]  --> src/proof_of_work.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn proof_of_work(block_data: &DataBlock) -> (String, i64) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.32s
[INFO] running `Command { std: "docker" "inspect" "31983ffdfd1f89817b95ddda84579a01f2e03900a514d822556f937ded422979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31983ffdfd1f89817b95ddda84579a01f2e03900a514d822556f937ded422979", kill_on_drop: false }`
[INFO] [stdout] 31983ffdfd1f89817b95ddda84579a01f2e03900a514d822556f937ded422979
