[INFO] cloning repository https://github.com/cdyfng/rust_sandbox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cdyfng/rust_sandbox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdyfng%2Frust_sandbox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdyfng%2Frust_sandbox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2928b6ff69c2de56258928552c17c57d1abd0f14
[INFO] testing cdyfng/rust_sandbox against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdyfng%2Frust_sandbox" "/workspace/builds/worker-38/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-38/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cdyfng/rust_sandbox 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/cdyfng/rust_sandbox
[INFO] finished tweaking git repo https://github.com/cdyfng/rust_sandbox
[INFO] tweaked toml for git repo https://github.com/cdyfng/rust_sandbox written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] crate git repo https://github.com/cdyfng/rust_sandbox 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] 0c77cc1af43eb8495b74a0f56afc597623dd0700ad977c7ac6d4bf9b22f756f4
[INFO] running `Command { std: "docker" "start" "-a" "0c77cc1af43eb8495b74a0f56afc597623dd0700ad977c7ac6d4bf9b22f756f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c77cc1af43eb8495b74a0f56afc597623dd0700ad977c7ac6d4bf9b22f756f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c77cc1af43eb8495b74a0f56afc597623dd0700ad977c7ac6d4bf9b22f756f4", kill_on_drop: false }`
[INFO] [stdout] 0c77cc1af43eb8495b74a0f56afc597623dd0700ad977c7ac6d4bf9b22f756f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] 6f6e8d4d9f6a52cda8f0e6394b2f6a0a7e50cf485261a62c7fed5f1ce21c7223
[INFO] running `Command { std: "docker" "start" "-a" "6f6e8d4d9f6a52cda8f0e6394b2f6a0a7e50cf485261a62c7fed5f1ce21c7223", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.35s
[INFO] running `Command { std: "docker" "inspect" "6f6e8d4d9f6a52cda8f0e6394b2f6a0a7e50cf485261a62c7fed5f1ce21c7223", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f6e8d4d9f6a52cda8f0e6394b2f6a0a7e50cf485261a62c7fed5f1ce21c7223", kill_on_drop: false }`
[INFO] [stdout] 6f6e8d4d9f6a52cda8f0e6394b2f6a0a7e50cf485261a62c7fed5f1ce21c7223
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] aff03572d9419800fbf2689837a53727a8c5ef90913db1eb995773f444eac38e
[INFO] running `Command { std: "docker" "start" "-a" "aff03572d9419800fbf2689837a53727a8c5ef90913db1eb995773f444eac38e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.79s
[INFO] running `Command { std: "docker" "inspect" "aff03572d9419800fbf2689837a53727a8c5ef90913db1eb995773f444eac38e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aff03572d9419800fbf2689837a53727a8c5ef90913db1eb995773f444eac38e", kill_on_drop: false }`
[INFO] [stdout] aff03572d9419800fbf2689837a53727a8c5ef90913db1eb995773f444eac38e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] d950e5bae36246d6a0b49ec3782c426433f1f2b53cdd81eea37b01c7c58ae316
[INFO] running `Command { std: "docker" "start" "-a" "d950e5bae36246d6a0b49ec3782c426433f1f2b53cdd81eea37b01c7c58ae316", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.17s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_sandbox-3dcde6b1e9e4201c)
[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" "d950e5bae36246d6a0b49ec3782c426433f1f2b53cdd81eea37b01c7c58ae316", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d950e5bae36246d6a0b49ec3782c426433f1f2b53cdd81eea37b01c7c58ae316", kill_on_drop: false }`
[INFO] [stdout] d950e5bae36246d6a0b49ec3782c426433f1f2b53cdd81eea37b01c7c58ae316