[INFO] fetching crate newron 0.5.1...
[INFO] checking newron-0.5.1 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate newron 0.5.1 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate newron 0.5.1 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate newron 0.5.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate newron 0.5.1
[INFO] tweaked toml for crates.io crate newron 0.5.1 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate newron 0.5.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 043a9a4148b495f4def95f3dae2de99720c8ee868551f4737e21edb63baeef36
[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" "043a9a4148b495f4def95f3dae2de99720c8ee868551f4737e21edb63baeef36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "043a9a4148b495f4def95f3dae2de99720c8ee868551f4737e21edb63baeef36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "043a9a4148b495f4def95f3dae2de99720c8ee868551f4737e21edb63baeef36", kill_on_drop: false }`
[INFO] [stdout] 043a9a4148b495f4def95f3dae2de99720c8ee868551f4737e21edb63baeef36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] feb6b6480191f5ce43000b6daa89511117bbb78b568ec8f2c604d40585161ff8
[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" "feb6b6480191f5ce43000b6daa89511117bbb78b568ec8f2c604d40585161ff8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking newron v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::utils`
[INFO] [stdout]   --> src/sequential.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::utils;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::utils`
[INFO] [stdout]   --> src/sequential.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::utils;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/dataset.rs:89:34
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn from_csv(path: &Path, header: bool) -> Result<Dataset, DatasetError> {
[INFO] [stdout]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `recall_score`
[INFO] [stdout]    --> src/sequential.rs:213:37
[INFO] [stdout]     |
[INFO] [stdout] 213 | ...                   let recall_score = cm.recall_score(class);
[INFO] [stdout]     |                           ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recall_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `precision_score`
[INFO] [stdout]    --> src/sequential.rs:217:37
[INFO] [stdout]     |
[INFO] [stdout] 217 | ...                   let precision_score = cm.precision_score(class);
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_precision_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f1_score`
[INFO] [stdout]    --> src/sequential.rs:221:37
[INFO] [stdout]     |
[INFO] [stdout] 221 | ...                   let f1_score = cm.f1_score(class);
[INFO] [stdout]     |                           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_f1_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/dataset.rs:89:34
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn from_csv(path: &Path, header: bool) -> Result<Dataset, DatasetError> {
[INFO] [stdout]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `recall_score`
[INFO] [stdout]    --> src/sequential.rs:213:37
[INFO] [stdout]     |
[INFO] [stdout] 213 | ...                   let recall_score = cm.recall_score(class);
[INFO] [stdout]     |                           ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recall_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `precision_score`
[INFO] [stdout]    --> src/sequential.rs:217:37
[INFO] [stdout]     |
[INFO] [stdout] 217 | ...                   let precision_score = cm.precision_score(class);
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_precision_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f1_score`
[INFO] [stdout]    --> src/sequential.rs:221:37
[INFO] [stdout]     |
[INFO] [stdout] 221 | ...                   let f1_score = cm.f1_score(class);
[INFO] [stdout]     |                           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_f1_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rand_range`
[INFO] [stdout]   --> src/random.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn rand_range(&mut self, a: i32, b: i32) -> i32 {
[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: `rand_range`
[INFO] [stdout]   --> src/random.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn rand_range(&mut self, a: i32, b: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ColumnType`, `RowType`
[INFO] [stdout]  --> examples/linear_regression.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use newron::dataset::{RowType, Dataset, ColumnType};
[INFO] [stdout]   |                       ^^^^^^^           ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.67s
[INFO] running `Command { std: "docker" "inspect" "feb6b6480191f5ce43000b6daa89511117bbb78b568ec8f2c604d40585161ff8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "feb6b6480191f5ce43000b6daa89511117bbb78b568ec8f2c604d40585161ff8", kill_on_drop: false }`
[INFO] [stdout] feb6b6480191f5ce43000b6daa89511117bbb78b568ec8f2c604d40585161ff8