[INFO] cloning repository https://github.com/gwelter/rust-treehouse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gwelter/rust-treehouse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgwelter%2Frust-treehouse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgwelter%2Frust-treehouse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fdf762b9f61101c5987ef0438ef1cc774f2becdc
[INFO] checking gwelter/rust-treehouse against try#da4929024a7261062885cb3209c9d7fdc919d233 for pr-135536
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgwelter%2Frust-treehouse" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gwelter/rust-treehouse on toolchain da4929024a7261062885cb3209c9d7fdc919d233
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da4929024a7261062885cb3209c9d7fdc919d233" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gwelter/rust-treehouse
[INFO] finished tweaking git repo https://github.com/gwelter/rust-treehouse
[INFO] tweaked toml for git repo https://github.com/gwelter/rust-treehouse written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/gwelter/rust-treehouse 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" "+da4929024a7261062885cb3209c9d7fdc919d233" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+da4929024a7261062885cb3209c9d7fdc919d233" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16f089295e45c6a9b68c39a782b5b94ef7db3f262fe5bb2df0970af413365cdf
[INFO] running `Command { std: "docker" "start" "-a" "16f089295e45c6a9b68c39a782b5b94ef7db3f262fe5bb2df0970af413365cdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16f089295e45c6a9b68c39a782b5b94ef7db3f262fe5bb2df0970af413365cdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16f089295e45c6a9b68c39a782b5b94ef7db3f262fe5bb2df0970af413365cdf", kill_on_drop: false }`
[INFO] [stdout] 16f089295e45c6a9b68c39a782b5b94ef7db3f262fe5bb2df0970af413365cdf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+da4929024a7261062885cb3209c9d7fdc919d233" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef8ac244aabf7dc2c22c3cad182083aebfb0b131c36cf3e9eb3045d4e249368c
[INFO] running `Command { std: "docker" "start" "-a" "ef8ac244aabf7dc2c22c3cad182083aebfb0b131c36cf3e9eb3045d4e249368c", kill_on_drop: false }`
[INFO] [stderr]     Checking treehouse v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Refuse` is never constructed
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum VisitorAction {
[INFO] [stdout]   |      ------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 7 |     Refuse,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `VisitorAction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Refuse` is never constructed
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum VisitorAction {
[INFO] [stdout]   |      ------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 7 |     Refuse,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `VisitorAction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "ef8ac244aabf7dc2c22c3cad182083aebfb0b131c36cf3e9eb3045d4e249368c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef8ac244aabf7dc2c22c3cad182083aebfb0b131c36cf3e9eb3045d4e249368c", kill_on_drop: false }`
[INFO] [stdout] ef8ac244aabf7dc2c22c3cad182083aebfb0b131c36cf3e9eb3045d4e249368c