[INFO] cloning repository https://github.com/afsec/stamp-coin [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/afsec/stamp-coin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fafsec%2Fstamp-coin", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fafsec%2Fstamp-coin'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] abbe4de71ffd6f04bccad7b0ab918316c0f81070 [INFO] checking afsec/stamp-coin against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fafsec%2Fstamp-coin" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/afsec/stamp-coin on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/afsec/stamp-coin [INFO] finished tweaking git repo https://github.com/afsec/stamp-coin [INFO] tweaked toml for git repo https://github.com/afsec/stamp-coin written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/afsec/stamp-coin 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] warning: /workspace/builds/worker-3-tc1/source/Cargo.toml: unused manifest key: workspace.package.name [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded sysinfo v0.23.6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2d862e93aad4ce23182883627839c513323668b0fb9e332d5b2af1df2d75e7be [INFO] running `Command { std: "docker" "start" "-a" "2d862e93aad4ce23182883627839c513323668b0fb9e332d5b2af1df2d75e7be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2d862e93aad4ce23182883627839c513323668b0fb9e332d5b2af1df2d75e7be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2d862e93aad4ce23182883627839c513323668b0fb9e332d5b2af1df2d75e7be", kill_on_drop: false }` [INFO] [stdout] 2d862e93aad4ce23182883627839c513323668b0fb9e332d5b2af1df2d75e7be [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c978d44d25e17e450e06e20d320636cf8ec97e887afa8c0c089e1e07850af53c [INFO] running `Command { std: "docker" "start" "-a" "c978d44d25e17e450e06e20d320636cf8ec97e887afa8c0c089e1e07850af53c", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: workspace.package.name [INFO] [stderr] Compiling libc v0.2.121 [INFO] [stderr] Compiling crossbeam-utils v0.8.8 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling proc-macro2 v1.0.36 [INFO] [stderr] Compiling typenum v1.15.0 [INFO] [stderr] Compiling generic-array v0.14.5 [INFO] [stderr] Compiling crossbeam-epoch v0.9.8 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.90 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling serde_derive v1.0.136 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling serde v1.0.136 [INFO] [stderr] Checking crossbeam-channel v0.5.4 [INFO] [stderr] Compiling anyhow v1.0.56 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Compiling quote v1.0.17 [INFO] [stderr] Checking crossbeam-deque v0.8.1 [INFO] [stderr] Compiling sysinfo v0.23.6 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking cpufeatures v0.2.2 [INFO] [stderr] Checking once_cell v1.10.0 [INFO] [stderr] Checking getrandom v0.2.6 [INFO] [stderr] Checking hex v0.4.3 [INFO] [stderr] Checking base64 v0.13.0 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking ppv-lite86 v0.2.16 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking crypto-common v0.1.3 [INFO] [stderr] Checking block-buffer v0.10.2 [INFO] [stderr] Checking digest v0.10.3 [INFO] [stderr] Checking sha2 v0.10.2 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking part1 v0.1.0 (/opt/rustwide/workdir/part1) [INFO] [stdout] warning: unused variable: `found_nonce` [INFO] [stdout] --> part1/src/mining.rs:19:17 [INFO] [stdout] | [INFO] [stdout] 19 | let mut found_nonce: Option = None; [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found_nonce` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> part1/src/mining.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let mut found_nonce: Option = None; [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `found_nonce` [INFO] [stdout] --> part1/src/mining.rs:19:17 [INFO] [stdout] | [INFO] [stdout] 19 | let mut found_nonce: Option = None; [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found_nonce` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> part1/src/mining.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let mut found_nonce: Option = None; [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `mining_single_thread` is never used [INFO] [stdout] --> part1/src/mining.rs:143:8 [INFO] [stdout] | [INFO] [stdout] 10 | impl Block { [INFO] [stdout] | ---------- associated function in this implementation [INFO] [stdout] ... [INFO] [stdout] 143 | fn mining_single_thread(current_hash: &BlockHash, matching: u8) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `mining_single_thread` is never used [INFO] [stdout] --> part1/src/mining.rs:143:8 [INFO] [stdout] | [INFO] [stdout] 10 | impl Block { [INFO] [stdout] | ---------- associated function in this implementation [INFO] [stdout] ... [INFO] [stdout] 143 | fn mining_single_thread(current_hash: &BlockHash, matching: u8) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> part1/src/mining.rs:62:25 [INFO] [stdout] | [INFO] [stdout] 62 | local_tx.send(nonce); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 62 | let _ = local_tx.send(nonce); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> part1/src/mining.rs:62:25 [INFO] [stdout] | [INFO] [stdout] 62 | local_tx.send(nonce); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 62 | let _ = local_tx.send(nonce); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking launcher v0.1.0 (/opt/rustwide/workdir/launcher) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.89s [INFO] running `Command { std: "docker" "inspect" "c978d44d25e17e450e06e20d320636cf8ec97e887afa8c0c089e1e07850af53c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c978d44d25e17e450e06e20d320636cf8ec97e887afa8c0c089e1e07850af53c", kill_on_drop: false }` [INFO] [stdout] c978d44d25e17e450e06e20d320636cf8ec97e887afa8c0c089e1e07850af53c