[INFO] fetching crate dot_json 0.2.0...
[INFO] testing dot_json-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate dot_json 0.2.0 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate dot_json 0.2.0 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 crates.io crate dot_json 0.2.0
[INFO] finished tweaking crates.io crate dot_json 0.2.0
[INFO] tweaked toml for crates.io crate dot_json 0.2.0 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "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-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] edba4476b6945d5370858f3d42e597d2b7a5b7a8e6188da1eb52a7cbd533af9c
[INFO] running `Command { std: "docker" "start" "-a" "edba4476b6945d5370858f3d42e597d2b7a5b7a8e6188da1eb52a7cbd533af9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edba4476b6945d5370858f3d42e597d2b7a5b7a8e6188da1eb52a7cbd533af9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edba4476b6945d5370858f3d42e597d2b7a5b7a8e6188da1eb52a7cbd533af9c", kill_on_drop: false }`
[INFO] [stdout] edba4476b6945d5370858f3d42e597d2b7a5b7a8e6188da1eb52a7cbd533af9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] a26edc1b86d0ae5e6cb6ef93ab954d561b89887db951fe0b3dd0254007e128cc
[INFO] running `Command { std: "docker" "start" "-a" "a26edc1b86d0ae5e6cb6ef93ab954d561b89887db951fe0b3dd0254007e128cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling dot_json v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.12s
[INFO] running `Command { std: "docker" "inspect" "a26edc1b86d0ae5e6cb6ef93ab954d561b89887db951fe0b3dd0254007e128cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a26edc1b86d0ae5e6cb6ef93ab954d561b89887db951fe0b3dd0254007e128cc", kill_on_drop: false }`
[INFO] [stdout] a26edc1b86d0ae5e6cb6ef93ab954d561b89887db951fe0b3dd0254007e128cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 6289b2cecaa54f6b2372438211fbd0f9b63b29982d40e5823735d6e95f9bf0ad
[INFO] running `Command { std: "docker" "start" "-a" "6289b2cecaa54f6b2372438211fbd0f9b63b29982d40e5823735d6e95f9bf0ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling dot_json v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "6289b2cecaa54f6b2372438211fbd0f9b63b29982d40e5823735d6e95f9bf0ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6289b2cecaa54f6b2372438211fbd0f9b63b29982d40e5823735d6e95f9bf0ad", kill_on_drop: false }`
[INFO] [stdout] 6289b2cecaa54f6b2372438211fbd0f9b63b29982d40e5823735d6e95f9bf0ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] e2520cf4138ccf1e6faef0a39f01e439b30ad00e4cb905b9b7796a9c339fe34e
[INFO] running `Command { std: "docker" "start" "-a" "e2520cf4138ccf1e6faef0a39f01e439b30ad00e4cb905b9b7796a9c339fe34e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dot_json-a7f83347f3c878e3)
[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]    Doc-tests dot_json
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - value_to_dot (line 146) ... ok
[INFO] [stdout] test src/lib.rs - arr_to_dot_map (line 81) ... ok
[INFO] [stdout] test src/lib.rs - value_to_dot (line 121) ... ok
[INFO] [stdout] test src/lib.rs - map_to_dot_map (line 42) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.49s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e2520cf4138ccf1e6faef0a39f01e439b30ad00e4cb905b9b7796a9c339fe34e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2520cf4138ccf1e6faef0a39f01e439b30ad00e4cb905b9b7796a9c339fe34e", kill_on_drop: false }`
[INFO] [stdout] e2520cf4138ccf1e6faef0a39f01e439b30ad00e4cb905b9b7796a9c339fe34e