[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#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimbby%2Fsubstrate_course_4" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/timbby/substrate_course_4 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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-5/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: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6e27431fc8eff99c09b9eab59e6eef23bf145c6ed0b7cd1561ca2a438161ea8
[INFO] running `Command { std: "docker" "start" "-a" "f6e27431fc8eff99c09b9eab59e6eef23bf145c6ed0b7cd1561ca2a438161ea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6e27431fc8eff99c09b9eab59e6eef23bf145c6ed0b7cd1561ca2a438161ea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6e27431fc8eff99c09b9eab59e6eef23bf145c6ed0b7cd1561ca2a438161ea8", kill_on_drop: false }`
[INFO] [stdout] f6e27431fc8eff99c09b9eab59e6eef23bf145c6ed0b7cd1561ca2a438161ea8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7829bfb145b5054464626ba1070ce9c19f23fcf799a21a78beb3e3970a1b31a
[INFO] running `Command { std: "docker" "start" "-a" "f7829bfb145b5054464626ba1070ce9c19f23fcf799a21a78beb3e3970a1b31a", kill_on_drop: false }`
[INFO] [stderr]    Compiling substrate_course_4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Green`
[INFO] [stdout]   --> src/test.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Yellow`
[INFO] [stdout]   --> src/test.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `x`
[INFO] [stdout]    --> src/test.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout] 140 |         fn x(&self) -> &T {
[INFO] [stdout]     |            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "f7829bfb145b5054464626ba1070ce9c19f23fcf799a21a78beb3e3970a1b31a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7829bfb145b5054464626ba1070ce9c19f23fcf799a21a78beb3e3970a1b31a", kill_on_drop: false }`
[INFO] [stdout] f7829bfb145b5054464626ba1070ce9c19f23fcf799a21a78beb3e3970a1b31a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 598d8a09b12e050e0e55694d3b5af37eb370dfa05e43159159881865a7256373
[INFO] running `Command { std: "docker" "start" "-a" "598d8a09b12e050e0e55694d3b5af37eb370dfa05e43159159881865a7256373", kill_on_drop: false }`
[INFO] [stderr]    Compiling substrate_course_4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Green`
[INFO] [stdout]   --> src/test.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Yellow`
[INFO] [stdout]   --> src/test.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `x`
[INFO] [stdout]    --> src/test.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout] 140 |         fn x(&self) -> &T {
[INFO] [stdout]     |            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "598d8a09b12e050e0e55694d3b5af37eb370dfa05e43159159881865a7256373", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "598d8a09b12e050e0e55694d3b5af37eb370dfa05e43159159881865a7256373", kill_on_drop: false }`
[INFO] [stdout] 598d8a09b12e050e0e55694d3b5af37eb370dfa05e43159159881865a7256373
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 90bd56c703e43bc1f7ef200aa434fcb840999aec13cf5129531d1ae58ca97a0e
[INFO] running `Command { std: "docker" "start" "-a" "90bd56c703e43bc1f7ef200aa434fcb840999aec13cf5129531d1ae58ca97a0e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variant is never constructed: `Green`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/test.rs:10:5
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 10 |     Green,
[INFO] [stdout] 
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Yellow`
[INFO] [stderr]   --> src/test.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Yellow,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `x`
[INFO] [stderr]    --> src/test.rs:140:12
[INFO] [stderr]     |
[INFO] [stderr] 140 |         fn x(&self) -> &T {
[INFO] [stderr]     |            ^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/substrate_course_4-518cf2d4c1d8131f)
[INFO] running `Command { std: "docker" "inspect" "90bd56c703e43bc1f7ef200aa434fcb840999aec13cf5129531d1ae58ca97a0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90bd56c703e43bc1f7ef200aa434fcb840999aec13cf5129531d1ae58ca97a0e", kill_on_drop: false }`
[INFO] [stdout] 90bd56c703e43bc1f7ef200aa434fcb840999aec13cf5129531d1ae58ca97a0e