[INFO] cloning repository https://github.com/lemon-mint/first-rust-study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lemon-mint/first-rust-study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flemon-mint%2Ffirst-rust-study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flemon-mint%2Ffirst-rust-study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 12d35fc172bd9fe693c74916ba79e3df01e873ce
[INFO] testing lemon-mint/first-rust-study against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flemon-mint%2Ffirst-rust-study" "/workspace/builds/worker-115/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-115/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lemon-mint/first-rust-study on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lemon-mint/first-rust-study
[INFO] finished tweaking git repo https://github.com/lemon-mint/first-rust-study
[INFO] tweaked toml for git repo https://github.com/lemon-mint/first-rust-study written to /workspace/builds/worker-115/source/Cargo.toml
[INFO] crate git repo https://github.com/lemon-mint/first-rust-study already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80aca9eaa220d239d7afa672f7adc14dc31865c5dc2b7985eae8bc999b0f0c8e
[INFO] running `Command { std: "docker" "start" "-a" "80aca9eaa220d239d7afa672f7adc14dc31865c5dc2b7985eae8bc999b0f0c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80aca9eaa220d239d7afa672f7adc14dc31865c5dc2b7985eae8bc999b0f0c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80aca9eaa220d239d7afa672f7adc14dc31865c5dc2b7985eae8bc999b0f0c8e", kill_on_drop: false }`
[INFO] [stdout] 80aca9eaa220d239d7afa672f7adc14dc31865c5dc2b7985eae8bc999b0f0c8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b7398fff16aa9582071ee397c05cc8e3162fe5ea1810ed34a093b27399cabb0
[INFO] running `Command { std: "docker" "start" "-a" "9b7398fff16aa9582071ee397c05cc8e3162fe5ea1810ed34a093b27399cabb0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling hworld v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.75s
[INFO] running `Command { std: "docker" "inspect" "9b7398fff16aa9582071ee397c05cc8e3162fe5ea1810ed34a093b27399cabb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b7398fff16aa9582071ee397c05cc8e3162fe5ea1810ed34a093b27399cabb0", kill_on_drop: false }`
[INFO] [stdout] 9b7398fff16aa9582071ee397c05cc8e3162fe5ea1810ed34a093b27399cabb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3507d841086a2848a1bfea22399b8ecc7a3e6a7b3c765c94d1c34e937c6b5671
[INFO] running `Command { std: "docker" "start" "-a" "3507d841086a2848a1bfea22399b8ecc7a3e6a7b3c765c94d1c34e937c6b5671", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling hworld v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.64s
[INFO] running `Command { std: "docker" "inspect" "3507d841086a2848a1bfea22399b8ecc7a3e6a7b3c765c94d1c34e937c6b5671", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3507d841086a2848a1bfea22399b8ecc7a3e6a7b3c765c94d1c34e937c6b5671", kill_on_drop: false }`
[INFO] [stdout] 3507d841086a2848a1bfea22399b8ecc7a3e6a7b3c765c94d1c34e937c6b5671
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 068b2c89f43e6dc36bd2833c974ddc84ff2ca84fe3ecb20509be3159211833da
[INFO] running `Command { std: "docker" "start" "-a" "068b2c89f43e6dc36bd2833c974ddc84ff2ca84fe3ecb20509be3159211833da", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hworld-a6f9a6172867b073)
[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" "068b2c89f43e6dc36bd2833c974ddc84ff2ca84fe3ecb20509be3159211833da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "068b2c89f43e6dc36bd2833c974ddc84ff2ca84fe3ecb20509be3159211833da", kill_on_drop: false }`
[INFO] [stdout] 068b2c89f43e6dc36bd2833c974ddc84ff2ca84fe3ecb20509be3159211833da