[INFO] cloning repository https://github.com/patrickodacre/substrate-seminar-8-traits
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/patrickodacre/substrate-seminar-8-traits" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpatrickodacre%2Fsubstrate-seminar-8-traits", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpatrickodacre%2Fsubstrate-seminar-8-traits'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3551cc92f2d1f0689c8fae6b19f6f671df99ce94
[INFO] checking patrickodacre/substrate-seminar-8-traits against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpatrickodacre%2Fsubstrate-seminar-8-traits" "/workspace/builds/worker-66/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-66/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/patrickodacre/substrate-seminar-8-traits on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/patrickodacre/substrate-seminar-8-traits
[INFO] finished tweaking git repo https://github.com/patrickodacre/substrate-seminar-8-traits
[INFO] tweaked toml for git repo https://github.com/patrickodacre/substrate-seminar-8-traits written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] crate git repo https://github.com/patrickodacre/substrate-seminar-8-traits already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58bfbea3671ecb51e0222d5e39983e9022f42c343875e22f9364909658232395
[INFO] running `Command { std: "docker" "start" "-a" "58bfbea3671ecb51e0222d5e39983e9022f42c343875e22f9364909658232395", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58bfbea3671ecb51e0222d5e39983e9022f42c343875e22f9364909658232395", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58bfbea3671ecb51e0222d5e39983e9022f42c343875e22f9364909658232395", kill_on_drop: false }`
[INFO] [stdout] 58bfbea3671ecb51e0222d5e39983e9022f42c343875e22f9364909658232395
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b10f0baf0305f28c84f456543efc28505853cbffe135b64c1614cc345b539662
[INFO] running `Command { std: "docker" "start" "-a" "b10f0baf0305f28c84f456543efc28505853cbffe135b64c1614cc345b539662", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking trait-example v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stdout] warning: struct is never constructed: `BalancesModule`
[INFO] [stdout]   --> src/balances.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct BalancesModule<C: Config>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/balances.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn new() -> Self
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `balance`
[INFO] [stdout]   --> src/balances.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn balance(&self, who: C::AccountId) -> C::Balance
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_balance`
[INFO] [stdout]   --> src/balances.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn set_balance(&mut self, who: C::AccountId, amount: C::Balance)
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `transfer`
[INFO] [stdout]   --> src/balances.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn transfer(
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.03s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking trait-example v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: struct is never constructed: `BalancesModule`
[INFO] [stdout]   --> src/balances.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct BalancesModule<C: Config>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/balances.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn new() -> Self
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `balance`
[INFO] [stdout]   --> src/balances.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn balance(&self, who: C::AccountId) -> C::Balance
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_balance`
[INFO] [stdout]   --> src/balances.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn set_balance(&mut self, who: C::AccountId, amount: C::Balance)
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `transfer`
[INFO] [stdout]   --> src/balances.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn transfer(
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.19s
[INFO] running `Command { std: "docker" "inspect" "b10f0baf0305f28c84f456543efc28505853cbffe135b64c1614cc345b539662", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b10f0baf0305f28c84f456543efc28505853cbffe135b64c1614cc345b539662", kill_on_drop: false }`
[INFO] [stdout] b10f0baf0305f28c84f456543efc28505853cbffe135b64c1614cc345b539662