[INFO] cloning repository https://github.com/adaptiman/rust_github_testing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/adaptiman/rust_github_testing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadaptiman%2Frust_github_testing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadaptiman%2Frust_github_testing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4f4c3bd40e49a14925874a160318be03dfcf92e1
[INFO] checking adaptiman/rust_github_testing against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadaptiman%2Frust_github_testing" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/adaptiman/rust_github_testing on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/adaptiman/rust_github_testing
[INFO] finished tweaking git repo https://github.com/adaptiman/rust_github_testing
[INFO] tweaked toml for git repo https://github.com/adaptiman/rust_github_testing written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/adaptiman/rust_github_testing already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd82e58f72ff63b5caa21d59b3d01e68bc4cf940ec8843a42e2d85a02950dd08
[INFO] running `Command { std: "docker" "start" "-a" "dd82e58f72ff63b5caa21d59b3d01e68bc4cf940ec8843a42e2d85a02950dd08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd82e58f72ff63b5caa21d59b3d01e68bc4cf940ec8843a42e2d85a02950dd08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd82e58f72ff63b5caa21d59b3d01e68bc4cf940ec8843a42e2d85a02950dd08", kill_on_drop: false }`
[INFO] [stdout] dd82e58f72ff63b5caa21d59b3d01e68bc4cf940ec8843a42e2d85a02950dd08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a29465fafb23c0879eed25b9ee613b3e6aff1945c4a88e614f4bf8a4d879dafa
[INFO] running `Command { std: "docker" "start" "-a" "a29465fafb23c0879eed25b9ee613b3e6aff1945c4a88e614f4bf8a4d879dafa", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_github_testing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `book`
[INFO] [stdout]   --> src/main.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let book = Book::new(
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_book`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `book`
[INFO] [stdout]   --> src/main.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let book = Book::new(
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_book`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "a29465fafb23c0879eed25b9ee613b3e6aff1945c4a88e614f4bf8a4d879dafa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a29465fafb23c0879eed25b9ee613b3e6aff1945c4a88e614f4bf8a4d879dafa", kill_on_drop: false }`
[INFO] [stdout] a29465fafb23c0879eed25b9ee613b3e6aff1945c4a88e614f4bf8a4d879dafa