[INFO] cloning repository https://github.com/HirotoShioi/nano_chain [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HirotoShioi/nano_chain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHirotoShioi%2Fnano_chain", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHirotoShioi%2Fnano_chain'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4c6615c381d15b85f625b53f6a140ccd76f449fc [INFO] checking HirotoShioi/nano_chain against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHirotoShioi%2Fnano_chain" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/HirotoShioi/nano_chain 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/HirotoShioi/nano_chain [INFO] finished tweaking git repo https://github.com/HirotoShioi/nano_chain [INFO] tweaked toml for git repo https://github.com/HirotoShioi/nano_chain written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/HirotoShioi/nano_chain 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] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded block-padding v0.1.4 [INFO] [stderr] Downloaded typenum v1.10.0 [INFO] [stderr] Downloaded proc-macro2 v1.0.1 [INFO] [stderr] Downloaded serde_derive v1.0.99 [INFO] [stderr] Downloaded wincolor v1.0.2 [INFO] [stderr] Downloaded unicode-width v0.1.6 [INFO] [stderr] Downloaded ppv-lite86 v0.2.5 [INFO] [stderr] Downloaded ctrlc v3.1.3 [INFO] [stderr] Downloaded chrono v0.4.8 [INFO] [stderr] Downloaded regex-syntax v0.6.11 [INFO] [stderr] Downloaded regex v1.2.1 [INFO] [stderr] Downloaded rand v0.7.0 [INFO] [stderr] Downloaded syn v1.0.3 [INFO] [stderr] Downloaded quick-error v1.2.2 [INFO] [stderr] Downloaded wasi v0.5.0 [INFO] [stderr] Downloaded getrandom v0.1.11 [INFO] [stderr] Downloaded humantime v1.2.0 [INFO] [stderr] Downloaded termcolor v1.0.5 [INFO] [stderr] Downloaded pretty_env_logger v0.3.1 [INFO] [stderr] Downloaded c2-chacha v0.2.2 [INFO] [stderr] Downloaded dtoa v0.4.4 [INFO] [stderr] Downloaded serde v1.0.99 [INFO] [stderr] Downloaded serde_yaml v0.8.9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 3c77e2d547425f13c058aac7863a19d6f07c0486eb41789cba5778e0b4cde1e8 [INFO] running `Command { std: "docker" "start" "-a" "3c77e2d547425f13c058aac7863a19d6f07c0486eb41789cba5778e0b4cde1e8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3c77e2d547425f13c058aac7863a19d6f07c0486eb41789cba5778e0b4cde1e8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3c77e2d547425f13c058aac7863a19d6f07c0486eb41789cba5778e0b4cde1e8", kill_on_drop: false }` [INFO] [stdout] 3c77e2d547425f13c058aac7863a19d6f07c0486eb41789cba5778e0b4cde1e8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f0a81b0b6126e5b89afba187a08f7ef7b779b734698d49a62a51f6568a668bb4 [INFO] running `Command { std: "docker" "start" "-a" "f0a81b0b6126e5b89afba187a08f7ef7b779b734698d49a62a51f6568a668bb4", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Compiling autocfg v0.1.6 [INFO] [stderr] Compiling proc-macro2 v1.0.1 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling syn v1.0.3 [INFO] [stderr] Compiling typenum v1.10.0 [INFO] [stderr] Compiling getrandom v0.1.11 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling serde v1.0.99 [INFO] [stderr] Checking aho-corasick v0.7.6 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Compiling nix v0.14.1 [INFO] [stderr] Checking regex-syntax v0.6.11 [INFO] [stderr] Compiling ryu v1.0.0 [INFO] [stderr] Checking byte-tools v0.3.1 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Checking block-padding v0.1.4 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking generic-array v0.12.3 [INFO] [stderr] Checking humantime v1.2.0 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking linked-hash-map v0.5.2 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking unicode-width v0.1.6 [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking termcolor v1.0.5 [INFO] [stderr] Checking yaml-rust v0.4.3 [INFO] [stderr] Checking chrono v0.4.8 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking block-buffer v0.7.3 [INFO] [stderr] Checking digest v0.8.1 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking opaque-debug v0.2.3 [INFO] [stderr] Checking dtoa v0.4.4 [INFO] [stderr] Checking keccak v0.1.0 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking rand v0.7.0 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking sha3 v0.8.2 [INFO] [stderr] Checking hex v0.3.2 [INFO] [stderr] Checking regex v1.2.1 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Checking pretty_env_logger v0.3.1 [INFO] [stderr] Compiling serde_derive v1.0.99 [INFO] [stderr] Checking ctrlc v3.1.3 [INFO] [stderr] Checking serde_yaml v0.8.9 [INFO] [stderr] Checking serde_json v1.0.40 [INFO] [stderr] Checking nano_chain v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `hex` is imported redundantly [INFO] [stdout] --> src/blockchain.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use hex; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate hex; [INFO] [stdout] | ----------------- the item `hex` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ctrlc` is imported redundantly [INFO] [stdout] --> src/peer_discovery.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use ctrlc; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | extern crate ctrlc; [INFO] [stdout] | ------------------- the item `ctrlc` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> src/peer_discovery/connection.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use serde_json; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | extern crate serde_json; [INFO] [stdout] | ------------------------ the item `serde_json` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `hex` is imported redundantly [INFO] [stdout] --> src/blockchain.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use hex; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate hex; [INFO] [stdout] | ----------------- the item `hex` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ctrlc` is imported redundantly [INFO] [stdout] --> src/peer_discovery.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use ctrlc; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | extern crate ctrlc; [INFO] [stdout] | ------------------- the item `ctrlc` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> src/peer_discovery/connection.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use serde_json; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | extern crate serde_json; [INFO] [stdout] | ------------------------ the item `serde_json` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `blockchain`, `mempool`, `utxo`, and `network_difficulty` are never read [INFO] [stdout] --> src/node.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 6 | blockchain: BlockChain, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 7 | mempool: Vec, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 8 | utxo: UTXO, [INFO] [stdout] | ^^^^ [INFO] [stdout] 9 | network_difficulty: usize, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `recv` is never used [INFO] [stdout] --> src/peer_discovery/util.rs:37:12 [INFO] [stdout] | [INFO] [stdout] 36 | impl MessageReceiver { [INFO] [stdout] | -------------------------- method in this implementation [INFO] [stdout] 37 | pub fn recv(&self) -> Result, RecvError> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `blockchain`, `mempool`, `utxo`, and `network_difficulty` are never read [INFO] [stdout] --> src/node.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 6 | blockchain: BlockChain, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 7 | mempool: Vec, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 8 | utxo: UTXO, [INFO] [stdout] | ^^^^ [INFO] [stdout] 9 | network_difficulty: usize, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `recv` is never used [INFO] [stdout] --> src/peer_discovery/util.rs:37:12 [INFO] [stdout] | [INFO] [stdout] 36 | impl MessageReceiver { [INFO] [stdout] | -------------------------- method in this implementation [INFO] [stdout] 37 | pub fn recv(&self) -> Result, RecvError> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 32.61s [INFO] running `Command { std: "docker" "inspect" "f0a81b0b6126e5b89afba187a08f7ef7b779b734698d49a62a51f6568a668bb4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f0a81b0b6126e5b89afba187a08f7ef7b779b734698d49a62a51f6568a668bb4", kill_on_drop: false }` [INFO] [stdout] f0a81b0b6126e5b89afba187a08f7ef7b779b734698d49a62a51f6568a668bb4