[INFO] fetching crate gosh-lbfgs 0.1.0...
[INFO] checking gosh-lbfgs-0.1.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate gosh-lbfgs 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate gosh-lbfgs 0.1.0 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gosh-lbfgs 0.1.0
[INFO] finished tweaking crates.io crate gosh-lbfgs 0.1.0
[INFO] tweaked toml for crates.io crate gosh-lbfgs 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate gosh-lbfgs 0.1.0 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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shared_child v0.3.5
[INFO] [stderr]   Downloaded gosh-linesearch v0.1.0
[INFO] [stderr]   Downloaded gchemol-gut v0.3.0
[INFO] [stderr]   Downloaded os_str_bytes v6.0.1
[INFO] [stderr]   Downloaded os_pipe v0.9.2
[INFO] [stderr]   Downloaded duct v0.13.5
[INFO] [stderr]   Downloaded vecfx v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d90eab76f2e12fd5b7df851a15133f461fd90dd36364b9c8a1190ef9e11e395a
[INFO] running `Command { std: "docker" "start" "-a" "d90eab76f2e12fd5b7df851a15133f461fd90dd36364b9c8a1190ef9e11e395a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d90eab76f2e12fd5b7df851a15133f461fd90dd36364b9c8a1190ef9e11e395a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d90eab76f2e12fd5b7df851a15133f461fd90dd36364b9c8a1190ef9e11e395a", kill_on_drop: false }`
[INFO] [stdout] d90eab76f2e12fd5b7df851a15133f461fd90dd36364b9c8a1190ef9e11e395a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5806bfe907e269dd6345ff57ecf6ef1ae3e0d1a54406c666ecc4d1dbfe326f61
[INFO] running `Command { std: "docker" "start" "-a" "5806bfe907e269dd6345ff57ecf6ef1ae3e0d1a54406c666ecc4d1dbfe326f61", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.94
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling semver v1.0.9
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking os_str_bytes v6.0.1
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]     Checking os_pipe v0.9.2
[INFO] [stderr]     Checking shared_child v0.3.5
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking shell-escape v0.1.5
[INFO] [stderr]     Checking duct v0.13.5
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking vecfx v0.1.5
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling clap_derive v3.1.18
[INFO] [stderr]     Checking clap v3.1.18
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking gchemol-gut v0.3.0
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking gosh-linesearch v0.1.0
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]     Checking gosh-lbfgs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::line::*`
[INFO] [stdout]  --> src/base.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::line::*;
[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] 
[INFO] [stdout] warning: unused import: `crate::math::*`
[INFO] [stdout]    --> src/line_new.rs:240:5
[INFO] [stdout]     |
[INFO] [stdout] 240 | use crate::math::*;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private item shadows public glob re-export
[INFO] [stdout]   --> src/lib.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | use crate::lbfgs::Lbfgs;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the name `Lbfgs` in the type namespace is supposed to be publicly re-exported here
[INFO] [stdout]   --> src/lib.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub use crate::lbfgs::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] note: but the private item here shadows it
[INFO] [stdout]   --> src/lib.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | use crate::lbfgs::Lbfgs;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(hidden_glob_reexports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Lbfgs` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub use crate::lbfgs::*;
[INFO] [stdout]    |         --------------- the item `Lbfgs` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 75 | use crate::lbfgs::Lbfgs;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `evaluated` and `clone_from` are never used
[INFO] [stdout]    --> src/base.rs:187:12
[INFO] [stdout]     |
[INFO] [stdout] 93  | impl<'a, U> Problem<'a, U> {
[INFO] [stdout]     | -------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 187 |     pub fn evaluated(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 192 |     pub fn clone_from(&mut self, src: &Problem<U>) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pf` is never read
[INFO] [stdout]    --> src/lbfgs.rs:735:5
[INFO] [stdout]     |
[INFO] [stdout] 722 | pub struct LbfgsState<'a, E>
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 735 |     pf: Vec<f64>,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `satisfying_max_gnorm` is never used
[INFO] [stdout]     --> src/lbfgs.rs:1058:4
[INFO] [stdout]      |
[INFO] [stdout] 1058 | fn satisfying_max_gnorm(prgr: &Progress, max_gnorm: f64) -> bool {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `satisfying_delta` is never used
[INFO] [stdout]     --> src/lbfgs.rs:1074:4
[INFO] [stdout]      |
[INFO] [stdout] 1074 | fn satisfying_delta<'a>(prgr: &Progress, pf: &'a mut [f64], delta: f64) -> bool {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pf` is never read
[INFO] [stdout]    --> src/lbfgs_iter.rs:403:5
[INFO] [stdout]     |
[INFO] [stdout] 393 | pub struct LbfgsState<'a, U> {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 403 |     pf: Vec<f64>,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `liblbfgs`
[INFO] [stdout]  --> benches/rosenbrock.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use liblbfgs::lbfgs;
[INFO] [stdout]   |     ^^^^^^^^ use of undeclared crate or module `liblbfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `liblbfgs`
[INFO] [stdout]   --> tests/rosenbrock.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use liblbfgs::{default_evaluate, default_progress, lbfgs, Progress};
[INFO] [stdout]    |         ^^^^^^^^ use of undeclared crate or module `liblbfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `liblbfgs`
[INFO] [stdout]  --> examples/sample.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use liblbfgs::{lbfgs, Progress};
[INFO] [stdout]   |     ^^^^^^^^ use of undeclared crate or module `liblbfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `liblbfgs`
[INFO] [stdout]   --> examples/lj.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     use liblbfgs::{lbfgs, Progress};
[INFO] [stdout]    |         ^^^^^^^^ use of undeclared crate or module `liblbfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gosh-lbfgs` (test "rosenbrock") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `crate::line::*`
[INFO] [stdout]  --> src/base.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::line::*;
[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] 
[INFO] [stdout] warning: unused import: `crate::math::*`
[INFO] [stdout]    --> src/line_new.rs:240:5
[INFO] [stdout]     |
[INFO] [stdout] 240 | use crate::math::*;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private item shadows public glob re-export
[INFO] [stdout]   --> src/lib.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | use crate::lbfgs::Lbfgs;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the name `Lbfgs` in the type namespace is supposed to be publicly re-exported here
[INFO] [stdout]   --> src/lib.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub use crate::lbfgs::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] note: but the private item here shadows it
[INFO] [stdout]   --> src/lib.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | use crate::lbfgs::Lbfgs;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(hidden_glob_reexports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Lbfgs` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub use crate::lbfgs::*;
[INFO] [stdout]    |         --------------- the item `Lbfgs` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 75 | use crate::lbfgs::Lbfgs;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gosh-lbfgs` (example "sample") due to 2 previous errors
[INFO] [stderr] error: could not compile `gosh-lbfgs` (bench "rosenbrock") due to 2 previous errors
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `liblbfgs`
[INFO] [stdout]    --> examples/lj.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 |     let steps = liblbfgs::lbfgs_iter()
[INFO] [stdout]     |                 ^^^^^^^^ use of undeclared crate or module `liblbfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `liblbfgs`
[INFO] [stdout]    --> examples/lj.rs:150:61
[INFO] [stdout]     |
[INFO] [stdout] 150 |         .minimize(positions.to_vec(), |x: &[f64], out: &mut liblbfgs::Output| {
[INFO] [stdout]     |                                                             ^^^^^^^^ use of undeclared crate or module `liblbfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gosh-lbfgs` (example "lj") due to 4 previous errors
[INFO] [stdout] warning: methods `evaluated` and `clone_from` are never used
[INFO] [stdout]    --> src/base.rs:187:12
[INFO] [stdout]     |
[INFO] [stdout] 93  | impl<'a, U> Problem<'a, U> {
[INFO] [stdout]     | -------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 187 |     pub fn evaluated(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 192 |     pub fn clone_from(&mut self, src: &Problem<U>) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pf` is never read
[INFO] [stdout]    --> src/lbfgs.rs:735:5
[INFO] [stdout]     |
[INFO] [stdout] 722 | pub struct LbfgsState<'a, E>
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 735 |     pf: Vec<f64>,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `satisfying_max_gnorm` is never used
[INFO] [stdout]     --> src/lbfgs.rs:1058:4
[INFO] [stdout]      |
[INFO] [stdout] 1058 | fn satisfying_max_gnorm(prgr: &Progress, max_gnorm: f64) -> bool {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `satisfying_delta` is never used
[INFO] [stdout]     --> src/lbfgs.rs:1074:4
[INFO] [stdout]      |
[INFO] [stdout] 1074 | fn satisfying_delta<'a>(prgr: &Progress, pf: &'a mut [f64], delta: f64) -> bool {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pf` is never read
[INFO] [stdout]    --> src/lbfgs_iter.rs:403:5
[INFO] [stdout]     |
[INFO] [stdout] 393 | pub struct LbfgsState<'a, U> {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 403 |     pf: Vec<f64>,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5806bfe907e269dd6345ff57ecf6ef1ae3e0d1a54406c666ecc4d1dbfe326f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5806bfe907e269dd6345ff57ecf6ef1ae3e0d1a54406c666ecc4d1dbfe326f61", kill_on_drop: false }`
[INFO] [stdout] 5806bfe907e269dd6345ff57ecf6ef1ae3e0d1a54406c666ecc4d1dbfe326f61
