[INFO] cloning repository https://github.com/staktrace/jsontest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/staktrace/jsontest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstaktrace%2Fjsontest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstaktrace%2Fjsontest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee2d4e43e1e165e0756c86d96129dbaed15a7096
[INFO] testing staktrace/jsontest against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstaktrace%2Fjsontest" "/workspace/builds/worker-100/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-100/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/staktrace/jsontest 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/staktrace/jsontest
[INFO] finished tweaking git repo https://github.com/staktrace/jsontest
[INFO] tweaked toml for git repo https://github.com/staktrace/jsontest written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] crate git repo https://github.com/staktrace/jsontest 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-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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] 8909ccc3ce6e87cbe4484975187c670ee87d9644138e27204053e0e69942549a
[INFO] running `Command { std: "docker" "start" "-a" "8909ccc3ce6e87cbe4484975187c670ee87d9644138e27204053e0e69942549a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8909ccc3ce6e87cbe4484975187c670ee87d9644138e27204053e0e69942549a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8909ccc3ce6e87cbe4484975187c670ee87d9644138e27204053e0e69942549a", kill_on_drop: false }`
[INFO] [stdout] 8909ccc3ce6e87cbe4484975187c670ee87d9644138e27204053e0e69942549a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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] 84924dd2ea7f16fcb02a99331046d4b0d7150e9ba9e768320ec03467f62972d6
[INFO] running `Command { std: "docker" "start" "-a" "84924dd2ea7f16fcb02a99331046d4b0d7150e9ba9e768320ec03467f62972d6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling json v0.11.13
[INFO] [stderr]    Compiling serde_json v1.0.32
[INFO] [stderr]    Compiling jsontest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.76s
[INFO] running `Command { std: "docker" "inspect" "84924dd2ea7f16fcb02a99331046d4b0d7150e9ba9e768320ec03467f62972d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84924dd2ea7f16fcb02a99331046d4b0d7150e9ba9e768320ec03467f62972d6", kill_on_drop: false }`
[INFO] [stdout] 84924dd2ea7f16fcb02a99331046d4b0d7150e9ba9e768320ec03467f62972d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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] a155355d684288faf155a18e1ab0dcc26b013c4f89b3bc283f7d5e50f3436e20
[INFO] running `Command { std: "docker" "start" "-a" "a155355d684288faf155a18e1ab0dcc26b013c4f89b3bc283f7d5e50f3436e20", kill_on_drop: false }`
[INFO] [stderr]    Compiling jsontest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "a155355d684288faf155a18e1ab0dcc26b013c4f89b3bc283f7d5e50f3436e20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a155355d684288faf155a18e1ab0dcc26b013c4f89b3bc283f7d5e50f3436e20", kill_on_drop: false }`
[INFO] [stdout] a155355d684288faf155a18e1ab0dcc26b013c4f89b3bc283f7d5e50f3436e20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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] 78acc9d714730690cd8c7313c8fa91998bc956d3e7ca60616f3ed1699938ffca
[INFO] running `Command { std: "docker" "start" "-a" "78acc9d714730690cd8c7313c8fa91998bc956d3e7ca60616f3ed1699938ffca", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/jsontest-5753c38992fab486)
[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" "78acc9d714730690cd8c7313c8fa91998bc956d3e7ca60616f3ed1699938ffca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78acc9d714730690cd8c7313c8fa91998bc956d3e7ca60616f3ed1699938ffca", kill_on_drop: false }`
[INFO] [stdout] 78acc9d714730690cd8c7313c8fa91998bc956d3e7ca60616f3ed1699938ffca