[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] checking klausbegnis/rust-polkadot-preparation-1 against try#5ff93158e08fa2205cd4b86cddf9eae95952cc96 for pr-129543-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fklausbegnis%2Frust-polkadot-preparation-1" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/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-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/klausbegnis/rust-polkadot-preparation-1 on toolchain 5ff93158e08fa2205cd4b86cddf9eae95952cc96
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ff93158e08fa2205cd4b86cddf9eae95952cc96" "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" "+5ff93158e08fa2205cd4b86cddf9eae95952cc96" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+5ff93158e08fa2205cd4b86cddf9eae95952cc96" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9c9f2440c00c88c31b4bbf78715e5b06721699d43844792e6d423ec8da66c1c
[INFO] running `Command { std: "docker" "start" "-a" "c9c9f2440c00c88c31b4bbf78715e5b06721699d43844792e6d423ec8da66c1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9c9f2440c00c88c31b4bbf78715e5b06721699d43844792e6d423ec8da66c1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9c9f2440c00c88c31b4bbf78715e5b06721699d43844792e6d423ec8da66c1c", kill_on_drop: false }`
[INFO] [stdout] c9c9f2440c00c88c31b4bbf78715e5b06721699d43844792e6d423ec8da66c1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+5ff93158e08fa2205cd4b86cddf9eae95952cc96" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9594412a97b0ea80047f15eb3a8ca985092ea5a682eed9338dc8fc4cae62d0e
[INFO] running `Command { std: "docker" "start" "-a" "d9594412a97b0ea80047f15eb3a8ca985092ea5a682eed9338dc8fc4cae62d0e", 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: 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: 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "d9594412a97b0ea80047f15eb3a8ca985092ea5a682eed9338dc8fc4cae62d0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9594412a97b0ea80047f15eb3a8ca985092ea5a682eed9338dc8fc4cae62d0e", kill_on_drop: false }`
[INFO] [stdout] d9594412a97b0ea80047f15eb3a8ca985092ea5a682eed9338dc8fc4cae62d0e