[INFO] cloning repository https://github.com/Ogi-Git/rust-blockchain [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ogi-Git/rust-blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOgi-Git%2Frust-blockchain", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOgi-Git%2Frust-blockchain'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 20f2a419acf9782260fbeb4e85bfd5dec3ccd0bc [INFO] checking Ogi-Git/rust-blockchain against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOgi-Git%2Frust-blockchain" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Ogi-Git/rust-blockchain 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/Ogi-Git/rust-blockchain [INFO] finished tweaking git repo https://github.com/Ogi-Git/rust-blockchain [INFO] tweaked toml for git repo https://github.com/Ogi-Git/rust-blockchain written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Ogi-Git/rust-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3872d51749ce6a3425cf9ac6fdd6c8729fe0746e3ca85d374b1fb29f3f74730d [INFO] running `Command { std: "docker" "start" "-a" "3872d51749ce6a3425cf9ac6fdd6c8729fe0746e3ca85d374b1fb29f3f74730d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3872d51749ce6a3425cf9ac6fdd6c8729fe0746e3ca85d374b1fb29f3f74730d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3872d51749ce6a3425cf9ac6fdd6c8729fe0746e3ca85d374b1fb29f3f74730d", kill_on_drop: false }` [INFO] [stdout] 3872d51749ce6a3425cf9ac6fdd6c8729fe0746e3ca85d374b1fb29f3f74730d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 6c5e6326d036c5a4516b1562ae56c851547a15a01abe16cc282e12db2eba6efb [INFO] running `Command { std: "docker" "start" "-a" "6c5e6326d036c5a4516b1562ae56c851547a15a01abe16cc282e12db2eba6efb", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.150 [INFO] [stderr] Compiling proc-macro2 v1.0.70 [INFO] [stderr] Compiling typenum v1.17.0 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling unicode-xid v0.2.4 [INFO] [stderr] Checking gimli v0.28.1 [INFO] [stderr] Checking memchr v2.6.4 [INFO] [stderr] Compiling serde v1.0.193 [INFO] [stderr] Checking rustc-demangle v0.1.23 [INFO] [stderr] Checking cpufeatures v0.2.11 [INFO] [stderr] Compiling generic-array v0.14.7 [INFO] [stderr] Checking miniz_oxide v0.7.1 [INFO] [stderr] Checking object v0.32.1 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling cc v1.0.83 [INFO] [stderr] Checking addr2line v0.21.0 [INFO] [stderr] Checking crypto-common v0.1.6 [INFO] [stderr] Checking block-buffer v0.10.4 [INFO] [stderr] Compiling backtrace v0.3.69 [INFO] [stderr] Checking digest v0.10.7 [INFO] [stderr] Checking sha2 v0.10.8 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking block v0.1.0 (/opt/rustwide/workdir/block) [INFO] [stdout] warning: constant `TARGET_DIFFICULTY` is never used [INFO] [stdout] --> block/src/lib.rs:7:7 [INFO] [stdout] | [INFO] [stdout] 7 | const TARGET_DIFFICULTY: usize = 4; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new_genesis_block`, `new_block`, `run_pow`, `validate`, and `serialize_block` are never used [INFO] [stdout] --> block/src/lib.rs:21:8 [INFO] [stdout] | [INFO] [stdout] 19 | impl Block { [INFO] [stdout] | ---------- associated items in this implementation [INFO] [stdout] 20 | [INFO] [stdout] 21 | fn new_genesis_block() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 25 | fn new_block(data: String, prev_block_hash: String, height: usize) -> Result { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 42 | fn run_pow(&mut self) -> Result<()> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 64 | fn validate(&self) -> Result { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 84 | fn serialize_block(&self) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `TARGET_DIFFICULTY` is never used [INFO] [stdout] --> block/src/lib.rs:7:7 [INFO] [stdout] | [INFO] [stdout] 7 | const TARGET_DIFFICULTY: usize = 4; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new_genesis_block`, `new_block`, `run_pow`, `validate`, and `serialize_block` are never used [INFO] [stdout] --> block/src/lib.rs:21:8 [INFO] [stdout] | [INFO] [stdout] 19 | impl Block { [INFO] [stdout] | ---------- associated items in this implementation [INFO] [stdout] 20 | [INFO] [stdout] 21 | fn new_genesis_block() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 25 | fn new_block(data: String, prev_block_hash: String, height: usize) -> Result { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 42 | fn run_pow(&mut self) -> Result<()> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 64 | fn validate(&self) -> Result { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 84 | fn serialize_block(&self) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `clone` that must be used [INFO] [stdout] --> block/src/lib.rs:86:13 [INFO] [stdout] | [INFO] [stdout] 86 | self.prev_block_hash.clone(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: cloning is often expensive and is not expected to have side effects [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 86 | let _ = self.prev_block_hash.clone(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `clone` that must be used [INFO] [stdout] --> block/src/lib.rs:87:13 [INFO] [stdout] | [INFO] [stdout] 87 | self.transactions.clone(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: cloning is often expensive and is not expected to have side effects [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 87 | let _ = self.transactions.clone(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `clone` that must be used [INFO] [stdout] --> block/src/lib.rs:86:13 [INFO] [stdout] | [INFO] [stdout] 86 | self.prev_block_hash.clone(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: cloning is often expensive and is not expected to have side effects [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 86 | let _ = self.prev_block_hash.clone(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `clone` that must be used [INFO] [stdout] --> block/src/lib.rs:87:13 [INFO] [stdout] | [INFO] [stdout] 87 | self.transactions.clone(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: cloning is often expensive and is not expected to have side effects [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 87 | let _ = self.transactions.clone(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.94s [INFO] running `Command { std: "docker" "inspect" "6c5e6326d036c5a4516b1562ae56c851547a15a01abe16cc282e12db2eba6efb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6c5e6326d036c5a4516b1562ae56c851547a15a01abe16cc282e12db2eba6efb", kill_on_drop: false }` [INFO] [stdout] 6c5e6326d036c5a4516b1562ae56c851547a15a01abe16cc282e12db2eba6efb