[INFO] fetching crate power-plant-semantic 0.1.6...
[INFO] checking power-plant-semantic-0.1.6 against 416264364aa47959f5827723e1d7dabc95d0744b for pr-162242
[INFO] extracting crate power-plant-semantic 0.1.6 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate power-plant-semantic 0.1.6
[INFO] finished tweaking crates.io crate power-plant-semantic 0.1.6
[INFO] tweaked toml for crates.io crate power-plant-semantic 0.1.6 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate power-plant-semantic 0.1.6 on toolchain 416264364aa47959f5827723e1d7dabc95d0744b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate power-plant-semantic 0.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `lints.rust.missing-debug-implementations` is deprecated in favor of `lints.rust.missing_debug_implementations` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.missing-docs` is deprecated in favor of `lints.rust.missing_docs` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.rust-2018-idioms` is deprecated in favor of `lints.rust.rust_2018_idioms` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unnameable-types` is deprecated in favor of `lints.rust.unnameable_types` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unreachable-pub` is deprecated in favor of `lints.rust.unreachable_pub` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unused-imports` is deprecated in favor of `lints.rust.unused_imports` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unused-must-use` is deprecated in favor of `lints.rust.unused_must_use` and will not work in a future edition
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:100:1
[INFO] [stderr]     |
[INFO] [stderr] 100 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `power-plant-semantic` (manifest) generated 8 warnings
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking power-plant-semantic-0.1.6 against 416264364aa47959f5827723e1d7dabc95d0744b for pr-162242
[INFO] extracting crate power-plant-semantic 0.1.6 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate power-plant-semantic 0.1.6
[INFO] finished tweaking crates.io crate power-plant-semantic 0.1.6
[INFO] tweaked toml for crates.io crate power-plant-semantic 0.1.6 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate power-plant-semantic 0.1.6 on toolchain 416264364aa47959f5827723e1d7dabc95d0744b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate power-plant-semantic 0.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `lints.rust.missing-debug-implementations` is deprecated in favor of `lints.rust.missing_debug_implementations` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.missing-docs` is deprecated in favor of `lints.rust.missing_docs` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.rust-2018-idioms` is deprecated in favor of `lints.rust.rust_2018_idioms` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unnameable-types` is deprecated in favor of `lints.rust.unnameable_types` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unreachable-pub` is deprecated in favor of `lints.rust.unreachable_pub` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unused-imports` is deprecated in favor of `lints.rust.unused_imports` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unused-must-use` is deprecated in favor of `lints.rust.unused_must_use` and will not work in a future edition
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:100:1
[INFO] [stderr]     |
[INFO] [stderr] 100 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `power-plant-semantic` (manifest) generated 8 warnings
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking power-plant-semantic-0.1.6 against 416264364aa47959f5827723e1d7dabc95d0744b for pr-162242
[INFO] extracting crate power-plant-semantic 0.1.6 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate power-plant-semantic 0.1.6
[INFO] finished tweaking crates.io crate power-plant-semantic 0.1.6
[INFO] tweaked toml for crates.io crate power-plant-semantic 0.1.6 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate power-plant-semantic 0.1.6 on toolchain 416264364aa47959f5827723e1d7dabc95d0744b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate power-plant-semantic 0.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `lints.rust.missing-debug-implementations` is deprecated in favor of `lints.rust.missing_debug_implementations` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.missing-docs` is deprecated in favor of `lints.rust.missing_docs` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.rust-2018-idioms` is deprecated in favor of `lints.rust.rust_2018_idioms` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unnameable-types` is deprecated in favor of `lints.rust.unnameable_types` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unreachable-pub` is deprecated in favor of `lints.rust.unreachable_pub` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unused-imports` is deprecated in favor of `lints.rust.unused_imports` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unused-must-use` is deprecated in favor of `lints.rust.unused_must_use` and will not work in a future edition
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:100:1
[INFO] [stderr]     |
[INFO] [stderr] 100 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `power-plant-semantic` (manifest) generated 8 warnings
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking power-plant-semantic-0.1.6 against 416264364aa47959f5827723e1d7dabc95d0744b for pr-162242
[INFO] extracting crate power-plant-semantic 0.1.6 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate power-plant-semantic 0.1.6
[INFO] finished tweaking crates.io crate power-plant-semantic 0.1.6
[INFO] tweaked toml for crates.io crate power-plant-semantic 0.1.6 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate power-plant-semantic 0.1.6 on toolchain 416264364aa47959f5827723e1d7dabc95d0744b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate power-plant-semantic 0.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `lints.rust.missing-debug-implementations` is deprecated in favor of `lints.rust.missing_debug_implementations` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.missing-docs` is deprecated in favor of `lints.rust.missing_docs` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.rust-2018-idioms` is deprecated in favor of `lints.rust.rust_2018_idioms` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unnameable-types` is deprecated in favor of `lints.rust.unnameable_types` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unreachable-pub` is deprecated in favor of `lints.rust.unreachable_pub` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unused-imports` is deprecated in favor of `lints.rust.unused_imports` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unused-must-use` is deprecated in favor of `lints.rust.unused_must_use` and will not work in a future edition
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:100:1
[INFO] [stderr]     |
[INFO] [stderr] 100 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `power-plant-semantic` (manifest) generated 8 warnings
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking power-plant-semantic-0.1.6 against 416264364aa47959f5827723e1d7dabc95d0744b for pr-162242
[INFO] extracting crate power-plant-semantic 0.1.6 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate power-plant-semantic 0.1.6
[INFO] finished tweaking crates.io crate power-plant-semantic 0.1.6
[INFO] tweaked toml for crates.io crate power-plant-semantic 0.1.6 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate power-plant-semantic 0.1.6 on toolchain 416264364aa47959f5827723e1d7dabc95d0744b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate power-plant-semantic 0.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `lints.rust.missing-debug-implementations` is deprecated in favor of `lints.rust.missing_debug_implementations` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.missing-docs` is deprecated in favor of `lints.rust.missing_docs` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.rust-2018-idioms` is deprecated in favor of `lints.rust.rust_2018_idioms` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unnameable-types` is deprecated in favor of `lints.rust.unnameable_types` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unreachable-pub` is deprecated in favor of `lints.rust.unreachable_pub` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unused-imports` is deprecated in favor of `lints.rust.unused_imports` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unused-must-use` is deprecated in favor of `lints.rust.unused_must_use` and will not work in a future edition
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:100:1
[INFO] [stderr]     |
[INFO] [stderr] 100 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `power-plant-semantic` (manifest) generated 8 warnings
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds


overridden task result to prepare-fail:timeout

Caused by:
    0: uncategorized prepare error
    1: no output for 300 seconds