[INFO] fetching crate metrics_ipc_collector 0.3.0...
[INFO] testing metrics_ipc_collector-0.3.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate metrics_ipc_collector 0.3.0 into /workspace/builds/worker-1-tc1/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-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate metrics_ipc_collector 0.3.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/metrics_ipc_collector-da60841e486c24d2)
[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::IPCRecorder (line 84) ... FAILED
[INFO] [stdout] test src/recorder.rs - recorder::IPCRecorderBuilder::build (line 233) ... FAILED
[INFO] [stdout] test src/recorder.rs - recorder::IPCRecorderBuilder (line 191) ... FAILED
[INFO] [stdout] test src/collector.rs - collector::IPCCollector (line 66) ... 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] 41 | 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] 44 | 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] 41 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_collector_rs_40_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 42 | use metrics_ipc_collector::IPCCollector;
[INFO] [stdout] 43 | let collector = IPCCollector::default();
[INFO] [stdout] 44 | collector.start_collecting()?;
[INFO] [stdout] 45 +     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] 85 | 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] 88 | 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] 85 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_recorder_rs_84_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 86 | use metrics_ipc_collector::IPCRecorderBuilder;
[INFO] [stdout] 87 | let builder = IPCRecorderBuilder::default().socket("my_metrics.sock");
[INFO] [stdout] 88 | builder.build()?;
[INFO] [stdout] 89 +     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] 234 | 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] 237 | 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] 234 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_recorder_rs_233_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 235 | use metrics_ipc_collector::IPCRecorderBuilder;
[INFO] [stdout] 236 | let builder = IPCRecorderBuilder::default().socket("my_metrics.sock");
[INFO] [stdout] 237 | builder.build()?;
[INFO] [stdout] 238 +     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] 192 | 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] 195 | 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] 192 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_recorder_rs_191_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 193 | use metrics_ipc_collector::IPCRecorderBuilder;
[INFO] [stdout] 194 | let builder = IPCRecorderBuilder::default().socket("my_metrics.sock");
[INFO] [stdout] 195 | builder.build()?;
[INFO] [stdout] 196 +     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] 67 | 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] 70 | 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] 67 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_collector_rs_66_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 68 | use metrics_ipc_collector::IPCCollector;
[INFO] [stdout] 69 | let collector = IPCCollector::default();
[INFO] [stdout] 70 | collector.start_collecting()?;
[INFO] [stdout] 71 +     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] 111 | 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] 111 - use interprocess::local_socket::LocalSocketStream;
[INFO] [stdout] 111 + use interprocess::local_socket::LocalSocketSite;
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this enum instead
[INFO] [stdout]     |
[INFO] [stdout] 111 | 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 0.50s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.77s; merged doctests compilation took 0.26s
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "bacab36a9888c3bd88664ca0f0bffa66e0a1f515611167462fdadb667d6e0aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bacab36a9888c3bd88664ca0f0bffa66e0a1f515611167462fdadb667d6e0aac", kill_on_drop: false }`
[INFO] [stdout] bacab36a9888c3bd88664ca0f0bffa66e0a1f515611167462fdadb667d6e0aac
