[INFO] cloning repository https://github.com/faheemuzzaman/class08
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/faheemuzzaman/class08" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaheemuzzaman%2Fclass08", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaheemuzzaman%2Fclass08'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75f6f8b3a25a5dfaddf87e780585a9ef625eef52
[INFO] testing faheemuzzaman/class08 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaheemuzzaman%2Fclass08" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/faheemuzzaman/class08 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/faheemuzzaman/class08
[INFO] finished tweaking git repo https://github.com/faheemuzzaman/class08
[INFO] tweaked toml for git repo https://github.com/faheemuzzaman/class08 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/faheemuzzaman/class08 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5801da2ac93c14c36b3f4d04c771a122e58c6ed04cdd37c6aa23f521be7a38b4
[INFO] running `Command { std: "docker" "start" "-a" "5801da2ac93c14c36b3f4d04c771a122e58c6ed04cdd37c6aa23f521be7a38b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5801da2ac93c14c36b3f4d04c771a122e58c6ed04cdd37c6aa23f521be7a38b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5801da2ac93c14c36b3f4d04c771a122e58c6ed04cdd37c6aa23f521be7a38b4", kill_on_drop: false }`
[INFO] [stdout] 5801da2ac93c14c36b3f4d04c771a122e58c6ed04cdd37c6aa23f521be7a38b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a80b7761da9c730247d9f397a172a40395f69aae4fa7413976e13f5a79ed6bdf
[INFO] running `Command { std: "docker" "start" "-a" "a80b7761da9c730247d9f397a172a40395f69aae4fa7413976e13f5a79ed6bdf", kill_on_drop: false }`
[INFO] [stderr]    Compiling student v0.1.0 (/opt/rustwide/workdir/student)
[INFO] [stderr]    Compiling class08 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "a80b7761da9c730247d9f397a172a40395f69aae4fa7413976e13f5a79ed6bdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a80b7761da9c730247d9f397a172a40395f69aae4fa7413976e13f5a79ed6bdf", kill_on_drop: false }`
[INFO] [stdout] a80b7761da9c730247d9f397a172a40395f69aae4fa7413976e13f5a79ed6bdf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5813b98cf8283c33bb3fb3a6212ec8546b4e458d39621b22d9cbdb37abf2aba7
[INFO] running `Command { std: "docker" "start" "-a" "5813b98cf8283c33bb3fb3a6212ec8546b4e458d39621b22d9cbdb37abf2aba7", kill_on_drop: false }`
[INFO] [stderr]    Compiling class08 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "5813b98cf8283c33bb3fb3a6212ec8546b4e458d39621b22d9cbdb37abf2aba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5813b98cf8283c33bb3fb3a6212ec8546b4e458d39621b22d9cbdb37abf2aba7", kill_on_drop: false }`
[INFO] [stdout] 5813b98cf8283c33bb3fb3a6212ec8546b4e458d39621b22d9cbdb37abf2aba7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fe9fc06d722ea86321fc34737d8c74d0b9566655723120cbeb45788735441714
[INFO] running `Command { std: "docker" "start" "-a" "fe9fc06d722ea86321fc34737d8c74d0b9566655723120cbeb45788735441714", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/class08-15ab9ed9594a27f3)
[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" "fe9fc06d722ea86321fc34737d8c74d0b9566655723120cbeb45788735441714", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe9fc06d722ea86321fc34737d8c74d0b9566655723120cbeb45788735441714", kill_on_drop: false }`
[INFO] [stdout] fe9fc06d722ea86321fc34737d8c74d0b9566655723120cbeb45788735441714