[INFO] cloning repository https://github.com/klausbegnis/rust-polkadot-preparation-1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/klausbegnis/rust-polkadot-preparation-1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fklausbegnis%2Frust-polkadot-preparation-1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fklausbegnis%2Frust-polkadot-preparation-1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 24568437219ed10af92cddd96bd9cbaa02f51a53
[INFO] linting klausbegnis/rust-polkadot-preparation-1 against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fklausbegnis%2Frust-polkadot-preparation-1" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/klausbegnis/rust-polkadot-preparation-1
[INFO] finished tweaking git repo https://github.com/klausbegnis/rust-polkadot-preparation-1
[INFO] tweaked toml for git repo https://github.com/klausbegnis/rust-polkadot-preparation-1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/klausbegnis/rust-polkadot-preparation-1 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/klausbegnis/rust-polkadot-preparation-1 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" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47dec9eb8ec129b0905ad61e4e0c87870e2469a3b221a75fe1428a3caa62c317
[INFO] running `Command { std: "docker" "start" "-a" "47dec9eb8ec129b0905ad61e4e0c87870e2469a3b221a75fe1428a3caa62c317", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47dec9eb8ec129b0905ad61e4e0c87870e2469a3b221a75fe1428a3caa62c317", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47dec9eb8ec129b0905ad61e4e0c87870e2469a3b221a75fe1428a3caa62c317", kill_on_drop: false }`
[INFO] [stdout] 47dec9eb8ec129b0905ad61e4e0c87870e2469a3b221a75fe1428a3caa62c317
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfee7bf3d1101938021ecf00dc892e0d1d08789afb2760ee3c0de16076258ec6
[INFO] running `Command { std: "docker" "start" "-a" "dfee7bf3d1101938021ecf00dc892e0d1d08789afb2760ee3c0de16076258ec6", kill_on_drop: false }`
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking rust-polkadot-preparation-1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `btree_map::Entry`
[INFO] [stdout]  --> src/proof_of_existence.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{btree_map::Entry, BTreeMap};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/proof_of_existence.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn get_claim(&self, claim: &T::Content) -> Option<&T::AccountId> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 22 |         self.get_claim(claim)
[INFO] [stdout]    |         --------------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_nonce` is never used
[INFO] [stdout]   --> src/system.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<T: Config> Pallet<T>{
[INFO] [stdout]    | ------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn get_nonce(&self, user: &T::AccountId) -> T::Nonce {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]   --> src/balances.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 | /         match destination_exists  {
[INFO] [stdout] 64 | |             None => {
[INFO] [stdout] 65 | |                 return Err("Account doesn't exist.");
[INFO] [stdout] ...  |
[INFO] [stdout] 68 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]    = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 63 ~         if let None = destination_exists {
[INFO] [stdout] 64 +             return Err("Account doesn't exist.");
[INFO] [stdout] 65 +         }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/system.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         return *self.nonce.get(user).unwrap_or(&T::Nonce::zero());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 37 -         return *self.nonce.get(user).unwrap_or(&T::Nonce::zero());
[INFO] [stdout] 37 +         *self.nonce.get(user).unwrap_or(&T::Nonce::zero())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: parameter is only used in recursion
[INFO] [stdout]   --> src/proof_of_existence.rs:21:29
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn get_claim(&self, claim: &T::Content) -> Option<&T::AccountId> {
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_claim`
[INFO] [stdout]    |
[INFO] [stdout] note: parameter used here
[INFO] [stdout]   --> src/proof_of_existence.rs:22:24
[INFO] [stdout]    |
[INFO] [stdout] 22 |         self.get_claim(claim)
[INFO] [stdout]    |                        ^^^^^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#only_used_in_recursion
[INFO] [stdout]    = note: `#[warn(clippy::only_used_in_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/proof_of_existence.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |         if !(*owner == caller) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^ help: try: `(*owner != caller)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/main.rs:129:101
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 call : RuntimeCall::ProofOfExistence(proof_of_existence::Call::CreateClaim {claim : &"Test"})
[INFO] [stdout]     |                                                                                                     ^^^^^^^ help: change this to: `"Test"`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this let-binding has unit value
[INFO] [stdout]    --> src/main.rs:134:5
[INFO] [stdout]     |
[INFO] [stdout] 134 |     let _res = runtime.execute_block(new_block).expect("invalid block");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stdout]     = note: `#[warn(clippy::let_unit_value)]` on by default
[INFO] [stdout] help: omit the `let` binding
[INFO] [stdout]     |
[INFO] [stdout] 134 -     let _res = runtime.execute_block(new_block).expect("invalid block");
[INFO] [stdout] 134 +     runtime.execute_block(new_block).expect("invalid block");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `btree_map::Entry`
[INFO] [stdout]  --> src/proof_of_existence.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{btree_map::Entry, BTreeMap};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/proof_of_existence.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn get_claim(&self, claim: &T::Content) -> Option<&T::AccountId> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 22 |         self.get_claim(claim)
[INFO] [stdout]    |         --------------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]   --> src/balances.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 | /         match destination_exists  {
[INFO] [stdout] 64 | |             None => {
[INFO] [stdout] 65 | |                 return Err("Account doesn't exist.");
[INFO] [stdout] ...  |
[INFO] [stdout] 68 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]    = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 63 ~         if let None = destination_exists {
[INFO] [stdout] 64 +             return Err("Account doesn't exist.");
[INFO] [stdout] 65 +         }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/system.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         return *self.nonce.get(user).unwrap_or(&T::Nonce::zero());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 37 -         return *self.nonce.get(user).unwrap_or(&T::Nonce::zero());
[INFO] [stdout] 37 +         *self.nonce.get(user).unwrap_or(&T::Nonce::zero())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: parameter is only used in recursion
[INFO] [stdout]   --> src/proof_of_existence.rs:21:29
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn get_claim(&self, claim: &T::Content) -> Option<&T::AccountId> {
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_claim`
[INFO] [stdout]    |
[INFO] [stdout] note: parameter used here
[INFO] [stdout]   --> src/proof_of_existence.rs:22:24
[INFO] [stdout]    |
[INFO] [stdout] 22 |         self.get_claim(claim)
[INFO] [stdout]    |                        ^^^^^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#only_used_in_recursion
[INFO] [stdout]    = note: `#[warn(clippy::only_used_in_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/proof_of_existence.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |         if !(*owner == caller) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^ help: try: `(*owner != caller)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/main.rs:129:101
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 call : RuntimeCall::ProofOfExistence(proof_of_existence::Call::CreateClaim {claim : &"Test"})
[INFO] [stdout]     |                                                                                                     ^^^^^^^ help: change this to: `"Test"`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this let-binding has unit value
[INFO] [stdout]    --> src/main.rs:134:5
[INFO] [stdout]     |
[INFO] [stdout] 134 |     let _res = runtime.execute_block(new_block).expect("invalid block");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stdout]     = note: `#[warn(clippy::let_unit_value)]` on by default
[INFO] [stdout] help: omit the `let` binding
[INFO] [stdout]     |
[INFO] [stdout] 134 -     let _res = runtime.execute_block(new_block).expect("invalid block");
[INFO] [stdout] 134 +     runtime.execute_block(new_block).expect("invalid block");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.59s
[INFO] running `Command { std: "docker" "inspect" "dfee7bf3d1101938021ecf00dc892e0d1d08789afb2760ee3c0de16076258ec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfee7bf3d1101938021ecf00dc892e0d1d08789afb2760ee3c0de16076258ec6", kill_on_drop: false }`
[INFO] [stdout] dfee7bf3d1101938021ecf00dc892e0d1d08789afb2760ee3c0de16076258ec6