[INFO] fetching crate liblbfgs 0.0.16... [INFO] testing liblbfgs-0.0.16 against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296 [INFO] extracting crate liblbfgs 0.0.16 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate liblbfgs 0.0.16 on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate liblbfgs 0.0.16 [INFO] finished tweaking crates.io crate liblbfgs 0.0.16 [INFO] tweaked toml for crates.io crate liblbfgs 0.0.16 written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate crates.io crate liblbfgs 0.0.16 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d0bd204238565e5edfe85b9b96ccae77706ffd39ae15c0feb67643aca6aa5f89 [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" "d0bd204238565e5edfe85b9b96ccae77706ffd39ae15c0feb67643aca6aa5f89", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d0bd204238565e5edfe85b9b96ccae77706ffd39ae15c0feb67643aca6aa5f89", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d0bd204238565e5edfe85b9b96ccae77706ffd39ae15c0feb67643aca6aa5f89", kill_on_drop: false }` [INFO] [stdout] d0bd204238565e5edfe85b9b96ccae77706ffd39ae15c0feb67643aca6aa5f89 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8994cdc6d1ba9f1c0ee020fdc168ad61677e3fc929f4c1d1c7bfdfae505667cc [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" "8994cdc6d1ba9f1c0ee020fdc168ad61677e3fc929f4c1d1c7bfdfae505667cc", kill_on_drop: false }` [INFO] [stderr] Compiling anyhow v1.0.34 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling liblbfgs v0.0.16 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `crate::math::*` [INFO] [stdout] --> src/line.rs:243:5 [INFO] [stdout] | [INFO] [stdout] 243 | use crate::math::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `pf` [INFO] [stdout] --> src/lbfgs.rs:867:5 [INFO] [stdout] | [INFO] [stdout] 867 | pf: Vec, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `satisfying_max_gnorm` [INFO] [stdout] --> src/lbfgs.rs:1190:4 [INFO] [stdout] | [INFO] [stdout] 1190 | fn satisfying_max_gnorm(prgr: &Progress, max_gnorm: f64) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `satisfying_delta` [INFO] [stdout] --> src/lbfgs.rs:1206:4 [INFO] [stdout] | [INFO] [stdout] 1206 | fn satisfying_delta<'a>(prgr: &Progress, pf: &'a mut [f64], delta: f64) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.97s [INFO] running `Command { std: "docker" "inspect" "8994cdc6d1ba9f1c0ee020fdc168ad61677e3fc929f4c1d1c7bfdfae505667cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8994cdc6d1ba9f1c0ee020fdc168ad61677e3fc929f4c1d1c7bfdfae505667cc", kill_on_drop: false }` [INFO] [stdout] 8994cdc6d1ba9f1c0ee020fdc168ad61677e3fc929f4c1d1c7bfdfae505667cc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cf5b5c32e2b2f75b3a2e73e915a8c5d58009a06c7cc124c047fb38096a4b353f [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" "cf5b5c32e2b2f75b3a2e73e915a8c5d58009a06c7cc124c047fb38096a4b353f", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling serde v1.0.117 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling syn v1.0.48 [INFO] [stderr] Compiling vecfx v0.1.2 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Compiling regex-automata v0.1.9 [INFO] [stdout] warning: unused import: `crate::math::*` [INFO] [stdout] --> src/line.rs:243:5 [INFO] [stdout] | [INFO] [stdout] 243 | use crate::math::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `pf` [INFO] [stdout] --> src/lbfgs.rs:867:5 [INFO] [stdout] | [INFO] [stdout] 867 | pf: Vec, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `satisfying_max_gnorm` [INFO] [stdout] --> src/lbfgs.rs:1190:4 [INFO] [stdout] | [INFO] [stdout] 1190 | fn satisfying_max_gnorm(prgr: &Progress, max_gnorm: f64) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `satisfying_delta` [INFO] [stdout] --> src/lbfgs.rs:1206:4 [INFO] [stdout] | [INFO] [stdout] 1206 | fn satisfying_delta<'a>(prgr: &Progress, pf: &'a mut [f64], delta: f64) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling rand_xoshiro v0.1.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.0 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Compiling criterion-plot v0.3.1 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling crossbeam-epoch v0.9.0 [INFO] [stderr] Compiling crossbeam-channel v0.5.0 [INFO] [stderr] Compiling crossbeam-deque v0.8.0 [INFO] [stderr] Compiling approx v0.3.2 [INFO] [stderr] Compiling rayon-core v1.9.0 [INFO] [stderr] Compiling serde_derive v1.0.117 [INFO] [stderr] Compiling bstr v0.2.14 [INFO] [stderr] Compiling serde_json v1.0.59 [INFO] [stderr] Compiling csv v1.1.4 [INFO] [stderr] Compiling tinytemplate v1.1.0 [INFO] [stderr] Compiling criterion v0.2.11 [INFO] [stderr] Compiling liblbfgs v0.0.16 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Progress` [INFO] [stdout] --> examples/lj.rs:68:27 [INFO] [stdout] | [INFO] [stdout] 68 | use liblbfgs::{lbfgs, Progress}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Progress` [INFO] [stdout] --> tests/rosenbrock.rs:25:63 [INFO] [stdout] | [INFO] [stdout] 25 | use liblbfgs::{default_evaluate, default_progress, lbfgs, Progress}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::math::*` [INFO] [stdout] --> src/line.rs:243:5 [INFO] [stdout] | [INFO] [stdout] 243 | use crate::math::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> examples/lj.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | let mut lj = LennardJones::default(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> examples/lj.rs:112:5 [INFO] [stdout] | [INFO] [stdout] 112 | / lbfgs().minimize( [INFO] [stdout] 113 | | &mut positions, [INFO] [stdout] 114 | | |x: &[f64], gx: &mut [f64]| { [INFO] [stdout] 115 | | let energy = lj.evaluate(x.as_3d(), gx.as_mut_3d()); [INFO] [stdout] ... | [INFO] [stdout] 127 | | }, [INFO] [stdout] 128 | | ); [INFO] [stdout] | |______^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `pf` [INFO] [stdout] --> src/lbfgs.rs:867:5 [INFO] [stdout] | [INFO] [stdout] 867 | pf: Vec, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `satisfying_max_gnorm` [INFO] [stdout] --> src/lbfgs.rs:1190:4 [INFO] [stdout] | [INFO] [stdout] 1190 | fn satisfying_max_gnorm(prgr: &Progress, max_gnorm: f64) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `satisfying_delta` [INFO] [stdout] --> src/lbfgs.rs:1206:4 [INFO] [stdout] | [INFO] [stdout] 1206 | fn satisfying_delta<'a>(prgr: &Progress, pf: &'a mut [f64], delta: f64) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1m 05s [INFO] running `Command { std: "docker" "inspect" "cf5b5c32e2b2f75b3a2e73e915a8c5d58009a06c7cc124c047fb38096a4b353f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cf5b5c32e2b2f75b3a2e73e915a8c5d58009a06c7cc124c047fb38096a4b353f", kill_on_drop: false }` [INFO] [stdout] cf5b5c32e2b2f75b3a2e73e915a8c5d58009a06c7cc124c047fb38096a4b353f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen", 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] a8bc6a7067b42f4dc077a04b9cedc29afacbfebee455b07f7379570c28596457 [INFO] running `Command { std: "docker" "start" "-a" "a8bc6a7067b42f4dc077a04b9cedc29afacbfebee455b07f7379570c28596457", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `crate::math::*` [INFO] [stderr] --> src/line.rs:243:5 [INFO] [stderr] | [INFO] [stderr] 243 | use crate::math::*; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `pf` [INFO] [stderr] --> src/lbfgs.rs:867:5 [INFO] [stderr] | [INFO] [stderr] 867 | pf: Vec, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `satisfying_max_gnorm` [INFO] [stderr] --> src/lbfgs.rs:1190:4 [INFO] [stderr] | [INFO] [stderr] 1190 | fn satisfying_max_gnorm(prgr: &Progress, max_gnorm: f64) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `satisfying_delta` [INFO] [stderr] --> src/lbfgs.rs:1206:4 [INFO] [stderr] | [INFO] [stderr] 1206 | fn satisfying_delta<'a>(prgr: &Progress, pf: &'a mut [f64], delta: f64) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `Progress` [INFO] [stderr] --> tests/rosenbrock.rs:25:63 [INFO] [stderr] | [INFO] [stderr] 25 | use liblbfgs::{default_evaluate, default_progress, lbfgs, Progress}; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `crate::math::*` [INFO] [stderr] --> src/line.rs:243:5 [INFO] [stderr] | [INFO] [stderr] 243 | use crate::math::*; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `pf` [INFO] [stderr] --> src/lbfgs.rs:867:5 [INFO] [stderr] | [INFO] [stderr] 867 | pf: Vec, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `satisfying_max_gnorm` [INFO] [stderr] --> src/lbfgs.rs:1190:4 [INFO] [stderr] | [INFO] [stderr] 1190 | fn satisfying_max_gnorm(prgr: &Progress, max_gnorm: f64) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `satisfying_delta` [INFO] [stderr] --> src/lbfgs.rs:1206:4 [INFO] [stderr] | [INFO] [stderr] 1206 | fn satisfying_delta<'a>(prgr: &Progress, pf: &'a mut [f64], delta: f64) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `Progress` [INFO] [stderr] --> examples/lj.rs:68:27 [INFO] [stderr] | [INFO] [stderr] 68 | use liblbfgs::{lbfgs, Progress}; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/lj.rs:69:9 [INFO] [stderr] | [INFO] [stderr] 69 | let mut lj = LennardJones::default(); [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> examples/lj.rs:112:5 [INFO] [stderr] | [INFO] [stderr] 112 | / lbfgs().minimize( [INFO] [stderr] 113 | | &mut positions, [INFO] [stderr] 114 | | |x: &[f64], gx: &mut [f64]| { [INFO] [stderr] 115 | | let energy = lj.evaluate(x.as_3d(), gx.as_mut_3d()); [INFO] [stderr] ... | [INFO] [stderr] 127 | | }, [INFO] [stderr] 128 | | ); [INFO] [stderr] | |______^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.17s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/liblbfgs-c3e46c31e2249238 [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test math::test_lbfgs_math ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/rosenbrock-6166e0a4a4abdbc0 [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stderr] Doc-tests liblbfgs [INFO] [stdout] test test_lbfgs ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test src/line.rs - line (line 10) ... ok [INFO] [stdout] test src/lib.rs - (line 12) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "a8bc6a7067b42f4dc077a04b9cedc29afacbfebee455b07f7379570c28596457", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a8bc6a7067b42f4dc077a04b9cedc29afacbfebee455b07f7379570c28596457", kill_on_drop: false }` [INFO] [stdout] a8bc6a7067b42f4dc077a04b9cedc29afacbfebee455b07f7379570c28596457