[INFO] cloning repository https://github.com/scott-kirk/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/scott-kirk/rust_sandbox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscott-kirk%2Frust_sandbox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscott-kirk%2Frust_sandbox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 549abfcc2eaca6121bf6cb3b979dd1fda06093d8
[INFO] testing scott-kirk/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%2Fscott-kirk%2Frust_sandbox" "/workspace/builds/worker-48/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-48/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/scott-kirk/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/scott-kirk/rust_sandbox
[INFO] finished tweaking git repo https://github.com/scott-kirk/rust_sandbox
[INFO] tweaked toml for git repo https://github.com/scott-kirk/rust_sandbox written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] crate git repo https://github.com/scott-kirk/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] b2b87d656277a2ba002ea86d8e9ed368fed4a2e1fa675b58c27f022077af0b14
[INFO] running `Command { std: "docker" "start" "-a" "b2b87d656277a2ba002ea86d8e9ed368fed4a2e1fa675b58c27f022077af0b14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2b87d656277a2ba002ea86d8e9ed368fed4a2e1fa675b58c27f022077af0b14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2b87d656277a2ba002ea86d8e9ed368fed4a2e1fa675b58c27f022077af0b14", kill_on_drop: false }`
[INFO] [stdout] b2b87d656277a2ba002ea86d8e9ed368fed4a2e1fa675b58c27f022077af0b14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] 2c473d907907ed00c8ec72b534689d5ccedede25016ff5f4b38b5b6be5485d77
[INFO] running `Command { std: "docker" "start" "-a" "2c473d907907ed00c8ec72b534689d5ccedede25016ff5f4b38b5b6be5485d77", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.09s
[INFO] running `Command { std: "docker" "inspect" "2c473d907907ed00c8ec72b534689d5ccedede25016ff5f4b38b5b6be5485d77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c473d907907ed00c8ec72b534689d5ccedede25016ff5f4b38b5b6be5485d77", kill_on_drop: false }`
[INFO] [stdout] 2c473d907907ed00c8ec72b534689d5ccedede25016ff5f4b38b5b6be5485d77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] dc2f7fcdfc2f5e202fb32baf615cacca5dbeb9fa16ba4a9d75990ebb6c9a71cd
[INFO] running `Command { std: "docker" "start" "-a" "dc2f7fcdfc2f5e202fb32baf615cacca5dbeb9fa16ba4a9d75990ebb6c9a71cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "dc2f7fcdfc2f5e202fb32baf615cacca5dbeb9fa16ba4a9d75990ebb6c9a71cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc2f7fcdfc2f5e202fb32baf615cacca5dbeb9fa16ba4a9d75990ebb6c9a71cd", kill_on_drop: false }`
[INFO] [stdout] dc2f7fcdfc2f5e202fb32baf615cacca5dbeb9fa16ba4a9d75990ebb6c9a71cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] fc62ad480cdeea03a304613d8751085c3eac05e724dd4e474b15f220da6eb622
[INFO] running `Command { std: "docker" "start" "-a" "fc62ad480cdeea03a304613d8751085c3eac05e724dd4e474b15f220da6eb622", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.40s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_sandbox-a8782aa9152187d8)
[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" "fc62ad480cdeea03a304613d8751085c3eac05e724dd4e474b15f220da6eb622", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc62ad480cdeea03a304613d8751085c3eac05e724dd4e474b15f220da6eb622", kill_on_drop: false }`
[INFO] [stdout] fc62ad480cdeea03a304613d8751085c3eac05e724dd4e474b15f220da6eb622