[INFO] fetching crate metrics_ipc_collector 0.3.0...
[INFO] testing metrics_ipc_collector-0.3.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate metrics_ipc_collector 0.3.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate metrics_ipc_collector 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate metrics_ipc_collector 0.3.0
[INFO] tweaked toml for crates.io crate metrics_ipc_collector 0.3.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate metrics_ipc_collector 0.3.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate metrics_ipc_collector 0.3.0 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93c73c5495d9635cf96f6eeb6d1c90f88f9719dc52b09f0184b724865ebffe61
[INFO] running `Command { std: "docker" "start" "-a" "93c73c5495d9635cf96f6eeb6d1c90f88f9719dc52b09f0184b724865ebffe61", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling thiserror v2.0.14
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling doctest-file v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling metrics v0.24.2
[INFO] [stderr]    Compiling rmp v0.8.14
[INFO] [stderr]    Compiling interprocess v2.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v2.0.14
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling rmp-serde v1.3.0
[INFO] [stderr]    Compiling metrics_ipc_collector v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.81s
[INFO] running `Command { std: "docker" "inspect" "93c73c5495d9635cf96f6eeb6d1c90f88f9719dc52b09f0184b724865ebffe61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93c73c5495d9635cf96f6eeb6d1c90f88f9719dc52b09f0184b724865ebffe61", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b1706e2fb08c0babb35617ad3eda69e566c262dea2eca57ec8a78a0d6962595
[INFO] running `Command { std: "docker" "start" "-a" "8b1706e2fb08c0babb35617ad3eda69e566c262dea2eca57ec8a78a0d6962595", kill_on_drop: false }`
[INFO] [stderr]    Compiling dunce v1.0.5
[INFO] [stderr]    Compiling fs_extra v1.3.0
[INFO] [stderr]    Compiling aws-lc-rs v1.13.3
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling socket2 v0.6.0
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling rustls-pki-types v1.12.0
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[INFO] [stderr]    Compiling raw-cpuid v11.5.0
[INFO] [stderr]    Compiling sketches-ddsketch v0.3.0
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling ipnet v2.11.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling metrics v0.24.2
[INFO] [stderr]    Compiling rustls-native-certs v0.8.1
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling metrics_ipc_collector v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling indexmap v2.10.0
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[INFO] [stderr]    Compiling metrics-util v0.20.0
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[INFO] [stderr]    Compiling metrics-exporter-prometheus v0.17.2
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 47.03s
[INFO] running `Command { std: "docker" "inspect" "8b1706e2fb08c0babb35617ad3eda69e566c262dea2eca57ec8a78a0d6962595", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b1706e2fb08c0babb35617ad3eda69e566c262dea2eca57ec8a78a0d6962595", kill_on_drop: false }`
[INFO] [stdout] 8b1706e2fb08c0babb35617ad3eda69e566c262dea2eca57ec8a78a0d6962595
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f111c2a781c8e1a0e3b13a491d90f968ad9c863261e8681c1a2e92a5189971e4
[INFO] running `Command { std: "docker" "start" "-a" "f111c2a781c8e1a0e3b13a491d90f968ad9c863261e8681c1a2e92a5189971e4", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/metrics_ipc_collector-36179fd17d6d20b3)
[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 metrics_ipc_collector
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/collector.rs - collector::IPCCollector (line 40) ... FAILED
[INFO] [stdout] test src/recorder.rs - recorder::IPCRecorderBuilder::build (line 233) ... FAILED
[INFO] [stdout] test src/recorder.rs - recorder::IPCRecorder (line 84) ... FAILED
[INFO] [stdout] test src/collector.rs - collector::IPCCollector (line 66) ... FAILED
[INFO] [stdout] test src/recorder.rs - recorder::IPCRecorderBuilder (line 191) ... FAILED
[INFO] [stdout] test src/recorder.rs - recorder::IPCRecorder::new (line 108) ... FAILED
[INFO] [stdout] test src/collector.rs - collector::IPCCollector::start_collecting (line 116) ... ok
[INFO] [stdout] test src/recorder.rs - recorder::IPCRecorderBuilder::socket (line 217) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/collector.rs - collector::IPCCollector (line 40) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/collector.rs:44:29
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_collector_rs_40_0() {
[INFO] [stdout]   |                                      ---------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 7 | collector.start_collecting()?;
[INFO] [stdout]   |                             ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_collector_rs_40_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | use metrics_ipc_collector::IPCCollector;
[INFO] [stdout] 6 | let collector = IPCCollector::default();
[INFO] [stdout] 7 | collector.start_collecting()?;
[INFO] [stdout] 8 +     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/recorder.rs - recorder::IPCRecorderBuilder::build (line 233) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/recorder.rs:237:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_recorder_rs_233_0() {
[INFO] [stdout]   |                                      ---------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 7 | builder.build()?;
[INFO] [stdout]   |                ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_recorder_rs_233_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | use metrics_ipc_collector::IPCRecorderBuilder;
[INFO] [stdout] 6 | let builder = IPCRecorderBuilder::default().socket("my_metrics.sock");
[INFO] [stdout] 7 | builder.build()?;
[INFO] [stdout] 8 +     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/recorder.rs - recorder::IPCRecorder (line 84) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/recorder.rs:88:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_recorder_rs_84_0() {
[INFO] [stdout]   |                                      --------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 7 | builder.build()?;
[INFO] [stdout]   |                ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_recorder_rs_84_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | use metrics_ipc_collector::IPCRecorderBuilder;
[INFO] [stdout] 6 | let builder = IPCRecorderBuilder::default().socket("my_metrics.sock");
[INFO] [stdout] 7 | builder.build()?;
[INFO] [stdout] 8 +     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/collector.rs - collector::IPCCollector (line 66) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/collector.rs:70:29
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_collector_rs_66_0() {
[INFO] [stdout]   |                                      ---------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 7 | collector.start_collecting()?;
[INFO] [stdout]   |                             ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_collector_rs_66_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | use metrics_ipc_collector::IPCCollector;
[INFO] [stdout] 6 | let collector = IPCCollector::default();
[INFO] [stdout] 7 | collector.start_collecting()?;
[INFO] [stdout] 8 +     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/recorder.rs - recorder::IPCRecorderBuilder (line 191) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/recorder.rs:195:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_recorder_rs_191_0() {
[INFO] [stdout]   |                                      ---------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 7 | builder.build()?;
[INFO] [stdout]   |                ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_recorder_rs_191_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | use metrics_ipc_collector::IPCRecorderBuilder;
[INFO] [stdout] 6 | let builder = IPCRecorderBuilder::default().socket("my_metrics.sock");
[INFO] [stdout] 7 | builder.build()?;
[INFO] [stdout] 8 +     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/recorder.rs - recorder::IPCRecorder::new (line 108) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `interprocess::local_socket::LocalSocketStream`
[INFO] [stdout]  --> src/recorder.rs:111:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use interprocess::local_socket::LocalSocketStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `LocalSocketStream` in `local_socket`
[INFO] [stdout]   |
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 6 - use interprocess::local_socket::LocalSocketStream;
[INFO] [stdout] 6 + use interprocess::local_socket::LocalSocketSite;
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum instead
[INFO] [stdout]   |
[INFO] [stdout] 6 | use interprocess::local_socket::prelude::LocalSocketStream;
[INFO] [stdout]   |                                 +++++++++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/collector.rs - collector::IPCCollector (line 40)
[INFO] [stdout]     src/collector.rs - collector::IPCCollector (line 66)
[INFO] [stdout]     src/recorder.rs - recorder::IPCRecorder (line 84)
[INFO] [stdout]     src/recorder.rs - recorder::IPCRecorder::new (line 108)
[INFO] [stdout]     src/recorder.rs - recorder::IPCRecorderBuilder (line 191)
[INFO] [stdout]     src/recorder.rs - recorder::IPCRecorderBuilder::build (line 233)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.21s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.36s; merged doctests compilation took 0.16s
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "f111c2a781c8e1a0e3b13a491d90f968ad9c863261e8681c1a2e92a5189971e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f111c2a781c8e1a0e3b13a491d90f968ad9c863261e8681c1a2e92a5189971e4", kill_on_drop: false }`
[INFO] [stdout] f111c2a781c8e1a0e3b13a491d90f968ad9c863261e8681c1a2e92a5189971e4
