[INFO] fetching crate json_to_rust 0.2.0...
[INFO] testing json_to_rust-0.2.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate json_to_rust 0.2.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate json_to_rust 0.2.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json_to_rust 0.2.0
[INFO] finished tweaking crates.io crate json_to_rust 0.2.0
[INFO] tweaked toml for crates.io crate json_to_rust 0.2.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate json_to_rust 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b6a22801ef2addb6f526b0f5568a265964729436a2af251b19caded7e98673c7
[INFO] running `Command { std: "docker" "start" "-a" "b6a22801ef2addb6f526b0f5568a265964729436a2af251b19caded7e98673c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6a22801ef2addb6f526b0f5568a265964729436a2af251b19caded7e98673c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6a22801ef2addb6f526b0f5568a265964729436a2af251b19caded7e98673c7", kill_on_drop: false }`
[INFO] [stdout] b6a22801ef2addb6f526b0f5568a265964729436a2af251b19caded7e98673c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3b2ab24733f10e26a38e52142b828b527262c6cf5182665401ba897a3067c4a
[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" "f3b2ab24733f10e26a38e52142b828b527262c6cf5182665401ba897a3067c4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling pico-args v0.3.4
[INFO] [stderr]    Compiling json_to_rust v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.23s
[INFO] running `Command { std: "docker" "inspect" "f3b2ab24733f10e26a38e52142b828b527262c6cf5182665401ba897a3067c4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3b2ab24733f10e26a38e52142b828b527262c6cf5182665401ba897a3067c4a", kill_on_drop: false }`
[INFO] [stdout] f3b2ab24733f10e26a38e52142b828b527262c6cf5182665401ba897a3067c4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fa317c1574e7c8cadf5e6b66049df754b5647014ac0efccdc74d14c1fb98b1f
[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" "1fa317c1574e7c8cadf5e6b66049df754b5647014ac0efccdc74d14c1fb98b1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling json_to_rust v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "1fa317c1574e7c8cadf5e6b66049df754b5647014ac0efccdc74d14c1fb98b1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fa317c1574e7c8cadf5e6b66049df754b5647014ac0efccdc74d14c1fb98b1f", kill_on_drop: false }`
[INFO] [stdout] 1fa317c1574e7c8cadf5e6b66049df754b5647014ac0efccdc74d14c1fb98b1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fc9b9c37442204596838af6b8bf398cd03d56a1a3187f6640129a0bb53075a9d
[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" "fc9b9c37442204596838af6b8bf398cd03d56a1a3187f6640129a0bb53075a9d", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/json_to_rust-45758bed31fc9152
[INFO] [stdout] test infer::shape::tests::unify ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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] [stderr]      Running /opt/rustwide/target/debug/deps/json_to_rust-5e95cf79a8b22077
[INFO] [stderr]    Doc-tests json_to_rust
[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" "fc9b9c37442204596838af6b8bf398cd03d56a1a3187f6640129a0bb53075a9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc9b9c37442204596838af6b8bf398cd03d56a1a3187f6640129a0bb53075a9d", kill_on_drop: false }`
[INFO] [stdout] fc9b9c37442204596838af6b8bf398cd03d56a1a3187f6640129a0bb53075a9d