[INFO] cloning repository https://github.com/liudi4046/qinggong_blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/liudi4046/qinggong_blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliudi4046%2Fqinggong_blockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliudi4046%2Fqinggong_blockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f24c61c562c42cbdd9fc219d5c1340b1710006b3
[INFO] checking liudi4046/qinggong_blockchain against try#f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2 for pr-156992
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliudi4046%2Fqinggong_blockchain" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/liudi4046/qinggong_blockchain
[INFO] finished tweaking git repo https://github.com/liudi4046/qinggong_blockchain
[INFO] tweaked toml for git repo https://github.com/liudi4046/qinggong_blockchain written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/liudi4046/qinggong_blockchain on toolchain f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/liudi4046/qinggong_blockchain 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" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "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 liudi4046/qinggong_blockchain against try#f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2 for pr-156992
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliudi4046%2Fqinggong_blockchain" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/liudi4046/qinggong_blockchain
[INFO] finished tweaking git repo https://github.com/liudi4046/qinggong_blockchain
[INFO] tweaked toml for git repo https://github.com/liudi4046/qinggong_blockchain written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/liudi4046/qinggong_blockchain on toolchain f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/liudi4046/qinggong_blockchain 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" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef15f972dce6970dd3e53b10b53be0b523af743e6f3b0d03446bf6e32b6fd19d
[INFO] running `Command { std: "docker" "start" "-a" "ef15f972dce6970dd3e53b10b53be0b523af743e6f3b0d03446bf6e32b6fd19d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef15f972dce6970dd3e53b10b53be0b523af743e6f3b0d03446bf6e32b6fd19d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef15f972dce6970dd3e53b10b53be0b523af743e6f3b0d03446bf6e32b6fd19d", kill_on_drop: false }`
[INFO] [stdout] ef15f972dce6970dd3e53b10b53be0b523af743e6f3b0d03446bf6e32b6fd19d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2dbbaa93b1869e972a92c091631a373db1962e10f724d645aaceee726f790bd1
[INFO] running `Command { std: "docker" "start" "-a" "2dbbaa93b1869e972a92c091631a373db1962e10f724d645aaceee726f790bd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking typenum v1.16.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking qinggong_blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | use blockchain::block::{self, Block};
[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 import: `self`
[INFO] [stdout]  --> src/main.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | use blockchain::block::{self, Block};
[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 variable: `new_block`
[INFO] [stdout]   --> src/blockchain/mod.rs:22:37
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn receive_block(&mut self, new_block: Block) {}
[INFO] [stdout]    |                                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_block`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_block`
[INFO] [stdout]   --> src/blockchain/mod.rs:22:37
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn receive_block(&mut self, new_block: Block) {}
[INFO] [stdout]    |                                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_block`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `receive_block` and `get_latest_block` are never used
[INFO] [stdout]   --> src/blockchain/mod.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Blockchain {
[INFO] [stdout]    | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn receive_block(&mut self, new_block: Block) {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn get_latest_block(&mut self) -> &Block {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `receive_block` and `get_latest_block` are never used
[INFO] [stdout]   --> src/blockchain/mod.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Blockchain {
[INFO] [stdout]    | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn receive_block(&mut self, new_block: Block) {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn get_latest_block(&mut self) -> &Block {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sender`, `recipient`, `amount`, and `timestamp` are never read
[INFO] [stdout]  --> src/blockchain/transaction.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Transaction {
[INFO] [stdout]   |            ----------- fields in this struct
[INFO] [stdout] 4 |     sender: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 5 |     recipient: String,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 6 |     amount: u32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 7 |     timestamp: u64,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Transaction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sender`, `recipient`, `amount`, and `timestamp` are never read
[INFO] [stdout]  --> src/blockchain/transaction.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Transaction {
[INFO] [stdout]   |            ----------- fields in this struct
[INFO] [stdout] 4 |     sender: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 5 |     recipient: String,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 6 |     amount: u32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 7 |     timestamp: u64,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Transaction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "2dbbaa93b1869e972a92c091631a373db1962e10f724d645aaceee726f790bd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dbbaa93b1869e972a92c091631a373db1962e10f724d645aaceee726f790bd1", kill_on_drop: false }`
[INFO] [stdout] 2dbbaa93b1869e972a92c091631a373db1962e10f724d645aaceee726f790bd1
