[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] testing patrickodacre/substrate-seminar-8-traits against 1.55.0 for beta-1.56-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpatrickodacre%2Fsubstrate-seminar-8-traits" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/patrickodacre/substrate-seminar-8-traits on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-2/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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1d8d41fc35df60e28320ca90f48c14f82493caf155ba5b05b702e4e8adefe02
[INFO] running `Command { std: "docker" "start" "-a" "b1d8d41fc35df60e28320ca90f48c14f82493caf155ba5b05b702e4e8adefe02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1d8d41fc35df60e28320ca90f48c14f82493caf155ba5b05b702e4e8adefe02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1d8d41fc35df60e28320ca90f48c14f82493caf155ba5b05b702e4e8adefe02", kill_on_drop: false }`
[INFO] [stdout] b1d8d41fc35df60e28320ca90f48c14f82493caf155ba5b05b702e4e8adefe02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de3d357f2bd92a0029e229aca49cead005cc9ee8a14d342777d1a22b94f20dcf
[INFO] running `Command { std: "docker" "start" "-a" "de3d357f2bd92a0029e229aca49cead005cc9ee8a14d342777d1a22b94f20dcf", kill_on_drop: false }`
[INFO] [stderr]    Compiling trait-example v0.1.0 (/opt/rustwide/workdir)
[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 0.74s
[INFO] running `Command { std: "docker" "inspect" "de3d357f2bd92a0029e229aca49cead005cc9ee8a14d342777d1a22b94f20dcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de3d357f2bd92a0029e229aca49cead005cc9ee8a14d342777d1a22b94f20dcf", kill_on_drop: false }`
[INFO] [stdout] de3d357f2bd92a0029e229aca49cead005cc9ee8a14d342777d1a22b94f20dcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bd049e906cba13387a6d1cf56647fd8e1c1df228e901b51287e87cca1736a00
[INFO] running `Command { std: "docker" "start" "-a" "6bd049e906cba13387a6d1cf56647fd8e1c1df228e901b51287e87cca1736a00", kill_on_drop: false }`
[INFO] [stderr]    Compiling trait-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "6bd049e906cba13387a6d1cf56647fd8e1c1df228e901b51287e87cca1736a00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bd049e906cba13387a6d1cf56647fd8e1c1df228e901b51287e87cca1736a00", kill_on_drop: false }`
[INFO] [stdout] 6bd049e906cba13387a6d1cf56647fd8e1c1df228e901b51287e87cca1736a00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2b46b3631a9eecc424469974348fd6fa71d06a0ba27fd743a08727f183d291d7
[INFO] running `Command { std: "docker" "start" "-a" "2b46b3631a9eecc424469974348fd6fa71d06a0ba27fd743a08727f183d291d7", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/trait_example-6e3ddde26e750f40)
[INFO] [stdout] test test::test_transfer_fails_when_from_user_not_exists_1 ... ok
[INFO] [stdout] test test::test_transfer ... ok
[INFO] [stdout] test test::test_transfer_fails_when_from_user_not_exists_2 ... ok
[INFO] [stdout] test test::test_set_balance ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2b46b3631a9eecc424469974348fd6fa71d06a0ba27fd743a08727f183d291d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b46b3631a9eecc424469974348fd6fa71d06a0ba27fd743a08727f183d291d7", kill_on_drop: false }`
[INFO] [stdout] 2b46b3631a9eecc424469974348fd6fa71d06a0ba27fd743a08727f183d291d7