[INFO] cloning repository https://github.com/timbby/substrate_course_4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/timbby/substrate_course_4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimbby%2Fsubstrate_course_4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimbby%2Fsubstrate_course_4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8976134fc673f3d4975ad26f22324144396e0e22
[INFO] testing timbby/substrate_course_4 against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimbby%2Fsubstrate_course_4" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/timbby/substrate_course_4 on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/timbby/substrate_course_4
[INFO] finished tweaking git repo https://github.com/timbby/substrate_course_4
[INFO] tweaked toml for git repo https://github.com/timbby/substrate_course_4 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/timbby/substrate_course_4 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" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10b6c8982b64e971345382aec6b0f7253722121ff85a43abb18dec272e44e211
[INFO] running `Command { std: "docker" "start" "-a" "10b6c8982b64e971345382aec6b0f7253722121ff85a43abb18dec272e44e211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10b6c8982b64e971345382aec6b0f7253722121ff85a43abb18dec272e44e211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10b6c8982b64e971345382aec6b0f7253722121ff85a43abb18dec272e44e211", kill_on_drop: false }`
[INFO] [stdout] 10b6c8982b64e971345382aec6b0f7253722121ff85a43abb18dec272e44e211
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b4b6c2ae9269ecf8889e3e0abb1121d144d6199c8dea38c8d988fb57e8fc1fc
[INFO] running `Command { std: "docker" "start" "-a" "9b4b6c2ae9269ecf8889e3e0abb1121d144d6199c8dea38c8d988fb57e8fc1fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling substrate_course_4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Green` and `Yellow` are never constructed
[INFO] [stdout]   --> src/test.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | enum TrafficLight {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 9  |     Red,
[INFO] [stdout] 10 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 11 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]    --> src/test.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |     struct Point<T> {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 135 |         x: T,
[INFO] [stdout]     |         ^
[INFO] [stdout] 136 |         y: T,
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]    --> src/test.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout] 139 |     impl<T> Point<T> {
[INFO] [stdout]     |     ---------------- method in this implementation
[INFO] [stdout] 140 |         fn x(&self) -> &T {
[INFO] [stdout]     |            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "9b4b6c2ae9269ecf8889e3e0abb1121d144d6199c8dea38c8d988fb57e8fc1fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b4b6c2ae9269ecf8889e3e0abb1121d144d6199c8dea38c8d988fb57e8fc1fc", kill_on_drop: false }`
[INFO] [stdout] 9b4b6c2ae9269ecf8889e3e0abb1121d144d6199c8dea38c8d988fb57e8fc1fc
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 295069101d73a4d7db38949a2a15853c59db7e0e2c602b81a87143990cb896a8
[INFO] running `Command { std: "docker" "start" "-a" "295069101d73a4d7db38949a2a15853c59db7e0e2c602b81a87143990cb896a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling substrate_course_4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Green` and `Yellow` are never constructed
[INFO] [stdout]   --> src/test.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | enum TrafficLight {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 9  |     Red,
[INFO] [stdout] 10 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 11 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]    --> src/test.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |     struct Point<T> {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 135 |         x: T,
[INFO] [stdout]     |         ^
[INFO] [stdout] 136 |         y: T,
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]    --> src/test.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout] 139 |     impl<T> Point<T> {
[INFO] [stdout]     |     ---------------- method in this implementation
[INFO] [stdout] 140 |         fn x(&self) -> &T {
[INFO] [stdout]     |            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "295069101d73a4d7db38949a2a15853c59db7e0e2c602b81a87143990cb896a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "295069101d73a4d7db38949a2a15853c59db7e0e2c602b81a87143990cb896a8", kill_on_drop: false }`
[INFO] [stdout] 295069101d73a4d7db38949a2a15853c59db7e0e2c602b81a87143990cb896a8
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dda774f4e583d9a633532945c4243c198633e8a7f91898acda1ad963361eae1b
[INFO] running `Command { std: "docker" "start" "-a" "dda774f4e583d9a633532945c4243c198633e8a7f91898acda1ad963361eae1b", kill_on_drop: false }`
[INFO] [stderr] warning: variants `Green` and `Yellow` are never constructed
[INFO] [stderr]   --> src/test.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | enum TrafficLight {
[INFO] [stderr]    |      ------------ variants in this enum
[INFO] [stderr] 9  |     Red,
[INFO] [stderr] 10 |     Green,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 11 |     Yellow,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `x` and `y` are never read
[INFO] [stderr]    --> src/test.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |     struct Point<T> {
[INFO] [stderr]     |            ----- fields in this struct
[INFO] [stderr] 135 |         x: T,
[INFO] [stderr]     |         ^
[INFO] [stderr] 136 |         y: T,
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: method `x` is never used
[INFO] [stderr]    --> src/test.rs:140:12
[INFO] [stderr]     |
[INFO] [stderr] 139 |     impl<T> Point<T> {
[INFO] [stderr]     |     ---------------- method in this implementation
[INFO] [stderr] 140 |         fn x(&self) -> &T {
[INFO] [stderr]     |            ^
[INFO] [stderr] 
[INFO] [stderr] warning: `substrate_course_4` (bin "substrate_course_4" test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/substrate_course_4-d0c5a1d50e41f1e8)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dda774f4e583d9a633532945c4243c198633e8a7f91898acda1ad963361eae1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dda774f4e583d9a633532945c4243c198633e8a7f91898acda1ad963361eae1b", kill_on_drop: false }`
[INFO] [stdout] dda774f4e583d9a633532945c4243c198633e8a7f91898acda1ad963361eae1b