[INFO] fetching crate json_keys_case_changer 0.2.0...
[INFO] testing json_keys_case_changer-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate json_keys_case_changer 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate json_keys_case_changer 0.2.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json_keys_case_changer 0.2.0
[INFO] finished tweaking crates.io crate json_keys_case_changer 0.2.0
[INFO] tweaked toml for crates.io crate json_keys_case_changer 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65422d6ab9d500db54d39a5ae03c3e5a65a9f50728082172fa2a4c1b92beca84
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "65422d6ab9d500db54d39a5ae03c3e5a65a9f50728082172fa2a4c1b92beca84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65422d6ab9d500db54d39a5ae03c3e5a65a9f50728082172fa2a4c1b92beca84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65422d6ab9d500db54d39a5ae03c3e5a65a9f50728082172fa2a4c1b92beca84", kill_on_drop: false }`
[INFO] [stdout] 65422d6ab9d500db54d39a5ae03c3e5a65a9f50728082172fa2a4c1b92beca84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bbd4a01d254c63f7f99185e9d6ad84e4eb2e9e46a13f779edc1a5b627e32a42
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8bbd4a01d254c63f7f99185e9d6ad84e4eb2e9e46a13f779edc1a5b627e32a42", kill_on_drop: false }`
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling json_keys_case_changer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.37s
[INFO] running `Command { std: "docker" "inspect" "8bbd4a01d254c63f7f99185e9d6ad84e4eb2e9e46a13f779edc1a5b627e32a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bbd4a01d254c63f7f99185e9d6ad84e4eb2e9e46a13f779edc1a5b627e32a42", kill_on_drop: false }`
[INFO] [stdout] 8bbd4a01d254c63f7f99185e9d6ad84e4eb2e9e46a13f779edc1a5b627e32a42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 820c7104987d65fcd2e1b6834c5c7ed3062dbe36405e947f73fe1022371a0ace
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "820c7104987d65fcd2e1b6834c5c7ed3062dbe36405e947f73fe1022371a0ace", kill_on_drop: false }`
[INFO] [stderr]    Compiling json_keys_case_changer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "820c7104987d65fcd2e1b6834c5c7ed3062dbe36405e947f73fe1022371a0ace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "820c7104987d65fcd2e1b6834c5c7ed3062dbe36405e947f73fe1022371a0ace", kill_on_drop: false }`
[INFO] [stdout] 820c7104987d65fcd2e1b6834c5c7ed3062dbe36405e947f73fe1022371a0ace
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5526af9e8f224880ddaea0746dd812566e277961ad2a389cb038113414bcdb7d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5526af9e8f224880ddaea0746dd812566e277961ad2a389cb038113414bcdb7d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.54s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/json_keys_case_changer-5550be3611b6f456
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::array_of_strings_in_map ... ok
[INFO] [stdout] test tests::root_array ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests json_keys_case_changer
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5526af9e8f224880ddaea0746dd812566e277961ad2a389cb038113414bcdb7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5526af9e8f224880ddaea0746dd812566e277961ad2a389cb038113414bcdb7d", kill_on_drop: false }`
[INFO] [stdout] 5526af9e8f224880ddaea0746dd812566e277961ad2a389cb038113414bcdb7d