[INFO] cloning repository https://github.com/study-rust/guessing_game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/study-rust/guessing_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstudy-rust%2Fguessing_game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstudy-rust%2Fguessing_game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9bf3073a9fc0391e16c045f7f5865f613878bfa6
[INFO] testing study-rust/guessing_game against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstudy-rust%2Fguessing_game" "/workspace/builds/worker-107/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-107/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/study-rust/guessing_game on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/study-rust/guessing_game
[INFO] finished tweaking git repo https://github.com/study-rust/guessing_game
[INFO] tweaked toml for git repo https://github.com/study-rust/guessing_game written to /workspace/builds/worker-107/source/Cargo.toml
[INFO] crate git repo https://github.com/study-rust/guessing_game already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd8be0d9e2e4270868c9b87a94e881ea1e226c7db4c0e3792677169bd52a4710
[INFO] running `Command { std: "docker" "start" "-a" "cd8be0d9e2e4270868c9b87a94e881ea1e226c7db4c0e3792677169bd52a4710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd8be0d9e2e4270868c9b87a94e881ea1e226c7db4c0e3792677169bd52a4710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd8be0d9e2e4270868c9b87a94e881ea1e226c7db4c0e3792677169bd52a4710", kill_on_drop: false }`
[INFO] [stdout] cd8be0d9e2e4270868c9b87a94e881ea1e226c7db4c0e3792677169bd52a4710
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06b3cf0a8820633e15941036e30a84caade84365bffdc168f285cb6a4d1dde0a
[INFO] running `Command { std: "docker" "start" "-a" "06b3cf0a8820633e15941036e30a84caade84365bffdc168f285cb6a4d1dde0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.70s
[INFO] running `Command { std: "docker" "inspect" "06b3cf0a8820633e15941036e30a84caade84365bffdc168f285cb6a4d1dde0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06b3cf0a8820633e15941036e30a84caade84365bffdc168f285cb6a4d1dde0a", kill_on_drop: false }`
[INFO] [stdout] 06b3cf0a8820633e15941036e30a84caade84365bffdc168f285cb6a4d1dde0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d08e3bb87f29d905ddd7faac451e58c5ecad27e8fc05279e0158384f758c7cf
[INFO] running `Command { std: "docker" "start" "-a" "6d08e3bb87f29d905ddd7faac451e58c5ecad27e8fc05279e0158384f758c7cf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.92s
[INFO] running `Command { std: "docker" "inspect" "6d08e3bb87f29d905ddd7faac451e58c5ecad27e8fc05279e0158384f758c7cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d08e3bb87f29d905ddd7faac451e58c5ecad27e8fc05279e0158384f758c7cf", kill_on_drop: false }`
[INFO] [stdout] 6d08e3bb87f29d905ddd7faac451e58c5ecad27e8fc05279e0158384f758c7cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2c4a28e14722244e3f8a16693d94b520d2a025423e93e11f71e0fb534caf1ac5
[INFO] running `Command { std: "docker" "start" "-a" "2c4a28e14722244e3f8a16693d94b520d2a025423e93e11f71e0fb534caf1ac5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/guessing_game-6cc760234c90c51f)
[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" "2c4a28e14722244e3f8a16693d94b520d2a025423e93e11f71e0fb534caf1ac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c4a28e14722244e3f8a16693d94b520d2a025423e93e11f71e0fb534caf1ac5", kill_on_drop: false }`
[INFO] [stdout] 2c4a28e14722244e3f8a16693d94b520d2a025423e93e11f71e0fb534caf1ac5