[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#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliudi4046%2Fqinggong_blockchain" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-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-5-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/liudi4046/qinggong_blockchain 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/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" "+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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 90cc86be392b4af7e8bf98616c318bc6d1ac9c78fb082c61290982a9e654daa4 [INFO] running `Command { std: "docker" "start" "-a" "90cc86be392b4af7e8bf98616c318bc6d1ac9c78fb082c61290982a9e654daa4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "90cc86be392b4af7e8bf98616c318bc6d1ac9c78fb082c61290982a9e654daa4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "90cc86be392b4af7e8bf98616c318bc6d1ac9c78fb082c61290982a9e654daa4", kill_on_drop: false }` [INFO] [stdout] 90cc86be392b4af7e8bf98616c318bc6d1ac9c78fb082c61290982a9e654daa4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 784314869ed8761b3c470325d96f7237f0346ddc9a844d60894f029856b0962a [INFO] running `Command { std: "docker" "start" "-a" "784314869ed8761b3c470325d96f7237f0346ddc9a844d60894f029856b0962a", kill_on_drop: false }` [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: 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] error: this type will no longer be must used: Result<[u8; 32], Infallible> [INFO] [stdout] --> src/blockchain/mod.rs:40:32 [INFO] [stdout] | [INFO] [stdout] 40 | let result: [u8; 32] = hasher.finalize().try_into().expect("error 4"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result<[u8; 32], Infallible> [INFO] [stdout] --> src/blockchain/block.rs:43:36 [INFO] [stdout] | [INFO] [stdout] 43 | let result: [u8; 32] = hasher.finalize().try_into().expect("error 3"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `qinggong_blockchain` (bin "qinggong_blockchain" test) due to 2 previous errors; 4 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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: 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] error: this type will no longer be must used: Result<[u8; 32], Infallible> [INFO] [stdout] --> src/blockchain/mod.rs:40:32 [INFO] [stdout] | [INFO] [stdout] 40 | let result: [u8; 32] = hasher.finalize().try_into().expect("error 4"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result<[u8; 32], Infallible> [INFO] [stdout] --> src/blockchain/block.rs:43:36 [INFO] [stdout] | [INFO] [stdout] 43 | let result: [u8; 32] = hasher.finalize().try_into().expect("error 3"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `qinggong_blockchain` (bin "qinggong_blockchain") due to 2 previous errors; 4 warnings emitted [INFO] running `Command { std: "docker" "inspect" "784314869ed8761b3c470325d96f7237f0346ddc9a844d60894f029856b0962a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "784314869ed8761b3c470325d96f7237f0346ddc9a844d60894f029856b0962a", kill_on_drop: false }` [INFO] [stdout] 784314869ed8761b3c470325d96f7237f0346ddc9a844d60894f029856b0962a