[INFO] fetching crate arcrs 0.1.1-alpha.4...
[INFO] checking arcrs-0.1.1-alpha.4 against try#bb9dbf1d07454a99066eabaabd5819851281494b for pr-80920
[INFO] extracting crate arcrs 0.1.1-alpha.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate arcrs 0.1.1-alpha.4 on toolchain bb9dbf1d07454a99066eabaabd5819851281494b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arcrs 0.1.1-alpha.4
[INFO] finished tweaking crates.io crate arcrs 0.1.1-alpha.4
[INFO] tweaked toml for crates.io crate arcrs 0.1.1-alpha.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "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" "+bb9dbf1d07454a99066eabaabd5819851281494b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64f4a5f7ede28f369f52992632e305ab5c062c2e671cf6efa3b485d25405a144
[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" "64f4a5f7ede28f369f52992632e305ab5c062c2e671cf6efa3b485d25405a144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64f4a5f7ede28f369f52992632e305ab5c062c2e671cf6efa3b485d25405a144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64f4a5f7ede28f369f52992632e305ab5c062c2e671cf6efa3b485d25405a144", kill_on_drop: false }`
[INFO] [stdout] 64f4a5f7ede28f369f52992632e305ab5c062c2e671cf6efa3b485d25405a144
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 64fd7caf761397743a7f7711a57b037d9db6e41a07288b3f95ae4862d63c8400
[INFO] running `Command { std: "docker" "start" "-a" "64fd7caf761397743a7f7711a57b037d9db6e41a07288b3f95ae4862d63c8400", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling inventory v0.1.10
[INFO] [stderr]    Compiling pyo3 v0.12.4
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]    Compiling pyo3-derive-backend v0.12.4
[INFO] [stderr]    Compiling ctor v0.1.18
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling inventory-impl v0.1.10
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling pyo3cls v0.12.4
[INFO] [stderr]     Checking indoc v0.3.6
[INFO] [stderr]     Checking arcrs v0.1.1-alpha.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `PyTuple`
[INFO] [stdout]   --> src/gp/tools.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 | use pyo3::types::{PyList, PyTuple};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PyTuple`
[INFO] [stdout]   --> src/gp/tools.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 | use pyo3::types::{PyList, PyTuple};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `GpParameterBuilder`
[INFO] [stdout]    --> src/gp/api.rs:156:12
[INFO] [stdout]     |
[INFO] [stdout] 156 | pub struct GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/gp/api.rs:166:12
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn new() -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_display_name`
[INFO] [stdout]    --> src/gp/api.rs:176:12
[INFO] [stdout]     |
[INFO] [stdout] 176 |     pub fn with_display_name(mut self, display_name: &str) -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_name`
[INFO] [stdout]    --> src/gp/api.rs:181:12
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn with_name(mut self, name: &str) -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_data_type`
[INFO] [stdout]    --> src/gp/api.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn with_data_type(mut self, data_type: DataType) -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_parameter_type`
[INFO] [stdout]    --> src/gp/api.rs:191:12
[INFO] [stdout]     |
[INFO] [stdout] 191 |     pub fn with_parameter_type(mut self, parameter_type: ParameterType) -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_direction`
[INFO] [stdout]    --> src/gp/api.rs:196:12
[INFO] [stdout]     |
[INFO] [stdout] 196 |     pub fn with_direction(mut self, direction: Direction) -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build`
[INFO] [stdout]    --> src/gp/api.rs:201:12
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub fn build(self) -> GpParameter {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `py`
[INFO] [stdout]    --> src/gp/api.rs:528:5
[INFO] [stdout]     |
[INFO] [stdout] 528 |     py: &'a Python<'a>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset`
[INFO] [stdout]    --> src/gp/api.rs:581:12
[INFO] [stdout]     |
[INFO] [stdout] 581 |     pub fn reset(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_doublevalue`
[INFO] [stdout]    --> src/gp/api.rs:625:12
[INFO] [stdout]     |
[INFO] [stdout] 625 |     pub fn as_doublevalue(&self, index: usize) -> PyResult<f64> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_vecstr`
[INFO] [stdout]   --> src/gp/tools.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn as_vecstr(&self) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_features_input_parameter`
[INFO] [stdout]    --> src/gp.rs:132:4
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn create_features_input_parameter(py: Python) -> PyResult<PyObject> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_features_output_parameter`
[INFO] [stdout]    --> src/gp.rs:145:4
[INFO] [stdout]     |
[INFO] [stdout] 145 | fn create_features_output_parameter(py: Python) -> PyResult<PyObject> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `GpParameterBuilder`
[INFO] [stdout]    --> src/gp/api.rs:156:12
[INFO] [stdout]     |
[INFO] [stdout] 156 | pub struct GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/gp/api.rs:166:12
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn new() -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_display_name`
[INFO] [stdout]    --> src/gp/api.rs:176:12
[INFO] [stdout]     |
[INFO] [stdout] 176 |     pub fn with_display_name(mut self, display_name: &str) -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_name`
[INFO] [stdout]    --> src/gp/api.rs:181:12
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn with_name(mut self, name: &str) -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_data_type`
[INFO] [stdout]    --> src/gp/api.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn with_data_type(mut self, data_type: DataType) -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_parameter_type`
[INFO] [stdout]    --> src/gp/api.rs:191:12
[INFO] [stdout]     |
[INFO] [stdout] 191 |     pub fn with_parameter_type(mut self, parameter_type: ParameterType) -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_direction`
[INFO] [stdout]    --> src/gp/api.rs:196:12
[INFO] [stdout]     |
[INFO] [stdout] 196 |     pub fn with_direction(mut self, direction: Direction) -> GpParameterBuilder {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build`
[INFO] [stdout]    --> src/gp/api.rs:201:12
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub fn build(self) -> GpParameter {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `py`
[INFO] [stdout]    --> src/gp/api.rs:528:5
[INFO] [stdout]     |
[INFO] [stdout] 528 |     py: &'a Python<'a>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset`
[INFO] [stdout]    --> src/gp/api.rs:581:12
[INFO] [stdout]     |
[INFO] [stdout] 581 |     pub fn reset(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_doublevalue`
[INFO] [stdout]    --> src/gp/api.rs:625:12
[INFO] [stdout]     |
[INFO] [stdout] 625 |     pub fn as_doublevalue(&self, index: usize) -> PyResult<f64> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_vecstr`
[INFO] [stdout]   --> src/gp/tools.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn as_vecstr(&self) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_features_input_parameter`
[INFO] [stdout]    --> src/gp.rs:132:4
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn create_features_input_parameter(py: Python) -> PyResult<PyObject> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_features_output_parameter`
[INFO] [stdout]    --> src/gp.rs:145:4
[INFO] [stdout]     |
[INFO] [stdout] 145 | fn create_features_output_parameter(py: Python) -> PyResult<PyObject> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.35s
[INFO] running `Command { std: "docker" "inspect" "64fd7caf761397743a7f7711a57b037d9db6e41a07288b3f95ae4862d63c8400", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64fd7caf761397743a7f7711a57b037d9db6e41a07288b3f95ae4862d63c8400", kill_on_drop: false }`
[INFO] [stdout] 64fd7caf761397743a7f7711a57b037d9db6e41a07288b3f95ae4862d63c8400