[INFO] fetching crate flatten_json 0.1.0...
[INFO] testing flatten_json-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate flatten_json 0.1.0 into /workspace/builds/worker-34/source
[INFO] validating manifest of crates.io crate flatten_json 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flatten_json 0.1.0
[INFO] finished tweaking crates.io crate flatten_json 0.1.0
[INFO] tweaked toml for crates.io crate flatten_json 0.1.0 written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f3f7d70ccd3453bc0fccc75dbbe76ddfbc30fb80db90bb90a79eea4d945c6c7
[INFO] running `Command { std: "docker" "start" "-a" "8f3f7d70ccd3453bc0fccc75dbbe76ddfbc30fb80db90bb90a79eea4d945c6c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f3f7d70ccd3453bc0fccc75dbbe76ddfbc30fb80db90bb90a79eea4d945c6c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f3f7d70ccd3453bc0fccc75dbbe76ddfbc30fb80db90bb90a79eea4d945c6c7", kill_on_drop: false }`
[INFO] [stdout] 8f3f7d70ccd3453bc0fccc75dbbe76ddfbc30fb80db90bb90a79eea4d945c6c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a8fd37f3765d4a3a5c7fe26197aede5688bccd87323975cdac2058af96a4540
[INFO] running `Command { std: "docker" "start" "-a" "5a8fd37f3765d4a3a5c7fe26197aede5688bccd87323975cdac2058af96a4540", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling flatten_json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.62s
[INFO] running `Command { std: "docker" "inspect" "5a8fd37f3765d4a3a5c7fe26197aede5688bccd87323975cdac2058af96a4540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a8fd37f3765d4a3a5c7fe26197aede5688bccd87323975cdac2058af96a4540", kill_on_drop: false }`
[INFO] [stdout] 5a8fd37f3765d4a3a5c7fe26197aede5688bccd87323975cdac2058af96a4540
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8227c3b16468ce7fd8ea77b7c4ada4f1f8656183e9793b21451e295108299c60
[INFO] running `Command { std: "docker" "start" "-a" "8227c3b16468ce7fd8ea77b7c4ada4f1f8656183e9793b21451e295108299c60", kill_on_drop: false }`
[INFO] [stderr]    Compiling flatten_json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "8227c3b16468ce7fd8ea77b7c4ada4f1f8656183e9793b21451e295108299c60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8227c3b16468ce7fd8ea77b7c4ada4f1f8656183e9793b21451e295108299c60", kill_on_drop: false }`
[INFO] [stdout] 8227c3b16468ce7fd8ea77b7c4ada4f1f8656183e9793b21451e295108299c60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8dee81b1813f0e8a0350c6574ff76a11dffeaa79f50d0270e6eedda06568ace4
[INFO] running `Command { std: "docker" "start" "-a" "8dee81b1813f0e8a0350c6574ff76a11dffeaa79f50d0270e6eedda06568ace4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/flatten_json-9ab42620e0054775)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_flat_array ... ok
[INFO] [stdout] test tests::test_custom_key ... ok
[INFO] [stdout] test tests::test_general_case ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flatten_json
[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" "8dee81b1813f0e8a0350c6574ff76a11dffeaa79f50d0270e6eedda06568ace4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dee81b1813f0e8a0350c6574ff76a11dffeaa79f50d0270e6eedda06568ace4", kill_on_drop: false }`
[INFO] [stdout] 8dee81b1813f0e8a0350c6574ff76a11dffeaa79f50d0270e6eedda06568ace4