[INFO] cloning repository https://github.com/legeyda/neurocr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/legeyda/neurocr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flegeyda%2Fneurocr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flegeyda%2Fneurocr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 46838c8be4edee3452e26ef790fb982934acef9b
[INFO] testing legeyda/neurocr against 1.75.0 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flegeyda%2Fneurocr" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/legeyda/neurocr on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/legeyda/neurocr
[INFO] finished tweaking git repo https://github.com/legeyda/neurocr
[INFO] tweaked toml for git repo https://github.com/legeyda/neurocr written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/legeyda/neurocr 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-traits v0.1.42
[INFO] [stderr]   Downloaded num-rational v0.1.40
[INFO] [stderr]   Downloaded num-bigint v0.1.41
[INFO] [stderr]   Downloaded wincolor v0.1.6
[INFO] [stderr]   Downloaded simple_logger v0.5.0
[INFO] [stderr]   Downloaded lazy_static v1.0.0
[INFO] [stderr]   Downloaded byteorder v1.2.1
[INFO] [stderr]   Downloaded time v0.1.39
[INFO] [stderr]   Downloaded redox_syscall v0.1.37
[INFO] [stderr]   Downloaded winapi v0.3.4
[INFO] [stderr]   Downloaded chrono v0.4.0
[INFO] [stderr]   Downloaded regex-syntax v0.4.2
[INFO] [stderr]   Downloaded regex v0.2.6
[INFO] [stderr]   Downloaded rand v0.4.2
[INFO] [stderr]   Downloaded libc v0.2.36
[INFO] [stderr]   Downloaded aho-corasick v0.6.4
[INFO] [stderr]   Downloaded rand v0.3.20
[INFO] [stderr]   Downloaded rulinalg v0.4.2
[INFO] [stderr]   Downloaded num v0.1.41
[INFO] [stderr]   Downloaded bitflags v1.0.1
[INFO] [stderr]   Downloaded log v0.4.1
[INFO] [stderr]   Downloaded env_logger v0.5.3
[INFO] [stderr]   Downloaded cfg-if v0.1.2
[INFO] [stderr]   Downloaded memchr v2.0.1
[INFO] [stderr]   Downloaded thread_local v0.3.5
[INFO] [stderr]   Downloaded termcolor v0.3.4
[INFO] [stderr]   Downloaded matrixmultiply v0.1.14
[INFO] [stderr]   Downloaded num-complex v0.1.41
[INFO] [stderr]   Downloaded atty v0.2.6
[INFO] [stderr]   Downloaded mnist v0.4.0
[INFO] [stderr]   Downloaded rawpointer v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2423c16c945570e92f8b6bc7e9ae318955ab35305b1a3fb7cd8c76c40447a964
[INFO] running `Command { std: "docker" "start" "-a" "2423c16c945570e92f8b6bc7e9ae318955ab35305b1a3fb7cd8c76c40447a964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2423c16c945570e92f8b6bc7e9ae318955ab35305b1a3fb7cd8c76c40447a964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2423c16c945570e92f8b6bc7e9ae318955ab35305b1a3fb7cd8c76c40447a964", kill_on_drop: false }`
[INFO] [stdout] 2423c16c945570e92f8b6bc7e9ae318955ab35305b1a3fb7cd8c76c40447a964
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 614bbf9f40ee5607f578b4f351fb2292526ad73f830d8f8c8b037a0d55cad6a4
[INFO] running `Command { std: "docker" "start" "-a" "614bbf9f40ee5607f578b4f351fb2292526ad73f830d8f8c8b037a0d55cad6a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling num-traits v0.1.42
[INFO] [stderr]    Compiling matrixmultiply v0.1.14
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling termcolor v0.3.4
[INFO] [stderr]    Compiling byteorder v1.2.1
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling mnist v0.4.0
[INFO] [stderr]    Compiling rand v0.3.20
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling atty v0.2.6
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling num-integer v0.1.35
[INFO] [stderr]    Compiling num-complex v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.34
[INFO] [stderr]    Compiling simple_logger v0.5.0
[INFO] [stderr]    Compiling regex v0.2.6
[INFO] [stderr]    Compiling num-bigint v0.1.41
[INFO] [stderr]    Compiling num-rational v0.1.40
[INFO] [stderr]    Compiling num v0.1.41
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling rulinalg v0.4.2
[INFO] [stderr]    Compiling env_logger v0.5.3
[INFO] [stderr]    Compiling neurocr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::Vec`
[INFO] [stdout]   --> src/mnistfiles.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::vec::Vec;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Fn`
[INFO] [stdout]   --> src/network.rs:18:26
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::ops::{Add, Mul, Fn};
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/network.rs:195:17
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let mut der = (&outputs[n-1] - expected_output);
[INFO] [stdout]     |                       ^                               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 195 -         let mut der = (&outputs[n-1] - expected_output);
[INFO] [stdout] 195 +         let mut der = &outputs[n-1] - expected_output;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]  --> src/mnistfiles.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::env::home_dir;
[INFO] [stdout]   |               ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]   --> src/mnistfiles.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     match home_dir() {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]   --> src/mnistfiles.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     match home_dir() {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/math.rs:24:54
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn minimize<VectorType, ScalarType>(subject:        &Functional<VectorType, ScalarType>,
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn minimize<VectorType, ScalarType>(subject:        &dyn Functional<VectorType, ScalarType>,
[INFO] [stdout]    |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/math.rs:27:48
[INFO] [stdout]    |
[INFO] [stdout] 27 | ...                   on_new:         &Fn(&VectorType) -> bool,
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 27 |                                     on_new:         &dyn Fn(&VectorType) -> bool,
[INFO] [stdout]    |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ignored`
[INFO] [stdout]   --> src/network.rs:76:61
[INFO] [stdout]    |
[INFO] [stdout] 76 |             biases:  Vector::zeros(num_neurons)            .apply(&(|ignored| generator())), 
[INFO] [stdout]    |                                                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ignored`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ignored`
[INFO] [stdout]   --> src/network.rs:77:61
[INFO] [stdout]    |
[INFO] [stdout] 77 |             weights: Matrix::zeros(num_neurons, num_inputs).apply(&(|ignored| generator()))
[INFO] [stdout]    |                                                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ignored`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/network.rs:272:7
[INFO] [stdout]     |
[INFO] [stdout] 272 |         let n = data.len();
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/math.rs:41:7
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut value: ScalarType = subject.eval(&estimation);
[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: function `random` is never used
[INFO] [stdout]   --> src/network.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn random<T>() -> T where T: Float + Rand {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `minimize` is never used
[INFO] [stdout]   --> src/math.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn minimize<VectorType, ScalarType>(subject:        &Functional<VectorType, ScalarType>,
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/mnistfiles.rs:40:2
[INFO] [stdout]    |
[INFO] [stdout] 40 |     create_dir_all(cache_dir.as_path());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let _ = create_dir_all(cache_dir.as_path());
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.11s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "614bbf9f40ee5607f578b4f351fb2292526ad73f830d8f8c8b037a0d55cad6a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "614bbf9f40ee5607f578b4f351fb2292526ad73f830d8f8c8b037a0d55cad6a4", kill_on_drop: false }`
[INFO] [stdout] 614bbf9f40ee5607f578b4f351fb2292526ad73f830d8f8c8b037a0d55cad6a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52f33bbfaeaf211793094a54ae2121a44aad3fd5f9c341b97c926eda12d1144c
[INFO] running `Command { std: "docker" "start" "-a" "52f33bbfaeaf211793094a54ae2121a44aad3fd5f9c341b97c926eda12d1144c", kill_on_drop: false }`
[INFO] [stderr]    Compiling neurocr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::Vec`
[INFO] [stdout]   --> src/mnistfiles.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::vec::Vec;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Fn`
[INFO] [stdout]   --> src/network.rs:18:26
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::ops::{Add, Mul, Fn};
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/network.rs:195:17
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let mut der = (&outputs[n-1] - expected_output);
[INFO] [stdout]     |                       ^                               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 195 -         let mut der = (&outputs[n-1] - expected_output);
[INFO] [stdout] 195 +         let mut der = &outputs[n-1] - expected_output;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]  --> src/mnistfiles.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::env::home_dir;
[INFO] [stdout]   |               ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]   --> src/mnistfiles.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     match home_dir() {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]   --> src/mnistfiles.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     match home_dir() {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/math.rs:24:54
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn minimize<VectorType, ScalarType>(subject:        &Functional<VectorType, ScalarType>,
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn minimize<VectorType, ScalarType>(subject:        &dyn Functional<VectorType, ScalarType>,
[INFO] [stdout]    |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/math.rs:27:48
[INFO] [stdout]    |
[INFO] [stdout] 27 | ...                   on_new:         &Fn(&VectorType) -> bool,
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 27 |                                     on_new:         &dyn Fn(&VectorType) -> bool,
[INFO] [stdout]    |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ignored`
[INFO] [stdout]   --> src/network.rs:76:61
[INFO] [stdout]    |
[INFO] [stdout] 76 |             biases:  Vector::zeros(num_neurons)            .apply(&(|ignored| generator())), 
[INFO] [stdout]    |                                                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ignored`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ignored`
[INFO] [stdout]   --> src/network.rs:77:61
[INFO] [stdout]    |
[INFO] [stdout] 77 |             weights: Matrix::zeros(num_neurons, num_inputs).apply(&(|ignored| generator()))
[INFO] [stdout]    |                                                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ignored`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/network.rs:272:7
[INFO] [stdout]     |
[INFO] [stdout] 272 |         let n = data.len();
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/math.rs:41:7
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut value: ScalarType = subject.eval(&estimation);
[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: function `random` is never used
[INFO] [stdout]   --> src/network.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn random<T>() -> T where T: Float + Rand {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `minimize` is never used
[INFO] [stdout]   --> src/math.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn minimize<VectorType, ScalarType>(subject:        &Functional<VectorType, ScalarType>,
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/mnistfiles.rs:40:2
[INFO] [stdout]    |
[INFO] [stdout] 40 |     create_dir_all(cache_dir.as_path());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let _ = create_dir_all(cache_dir.as_path());
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::Vec`
[INFO] [stdout]   --> src/mnistfiles.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::vec::Vec;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Fn`
[INFO] [stdout]   --> src/network.rs:18:26
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::ops::{Add, Mul, Fn};
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/network.rs:195:17
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let mut der = (&outputs[n-1] - expected_output);
[INFO] [stdout]     |                       ^                               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 195 -         let mut der = (&outputs[n-1] - expected_output);
[INFO] [stdout] 195 +         let mut der = &outputs[n-1] - expected_output;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/network.rs:500:2
[INFO] [stdout]     |
[INFO] [stdout] 500 |     /// let us teach network to differ horizontal from vertial lines on 2-by-2 image
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/network.rs:526:2
[INFO] [stdout]     |
[INFO] [stdout] 526 |     /// let us teach network to differ horizontal from vertial lines on 2-by-2 image
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/network.rs:561:2
[INFO] [stdout]     |
[INFO] [stdout] 561 |     /// let us teach network to differ horizontal from vertial lines on 2-by-2 image
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]  --> src/mnistfiles.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::env::home_dir;
[INFO] [stdout]   |               ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]   --> src/mnistfiles.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     match home_dir() {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]   --> src/mnistfiles.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     match home_dir() {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/math.rs:24:54
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn minimize<VectorType, ScalarType>(subject:        &Functional<VectorType, ScalarType>,
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn minimize<VectorType, ScalarType>(subject:        &dyn Functional<VectorType, ScalarType>,
[INFO] [stdout]    |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/math.rs:27:48
[INFO] [stdout]    |
[INFO] [stdout] 27 | ...                   on_new:         &Fn(&VectorType) -> bool,
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 27 |                                     on_new:         &dyn Fn(&VectorType) -> bool,
[INFO] [stdout]    |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ignored`
[INFO] [stdout]   --> src/network.rs:76:61
[INFO] [stdout]    |
[INFO] [stdout] 76 |             biases:  Vector::zeros(num_neurons)            .apply(&(|ignored| generator())), 
[INFO] [stdout]    |                                                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ignored`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ignored`
[INFO] [stdout]   --> src/network.rs:77:61
[INFO] [stdout]    |
[INFO] [stdout] 77 |             weights: Matrix::zeros(num_neurons, num_inputs).apply(&(|ignored| generator()))
[INFO] [stdout]    |                                                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ignored`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/network.rs:272:7
[INFO] [stdout]     |
[INFO] [stdout] 272 |         let n = data.len();
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/math.rs:41:7
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut value: ScalarType = subject.eval(&estimation);
[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: function `test_sigmoid` is never used
[INFO] [stdout]   --> src/network.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn test_sigmoid() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random` is never used
[INFO] [stdout]   --> src/network.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn random<T>() -> T where T: Float + Rand {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `asses_quality` is never used
[INFO] [stdout]    --> src/network.rs:549:4
[INFO] [stdout]     |
[INFO] [stdout] 549 | fn asses_quality<T: Debug + Float + FromPrimitive + 'static>(network: Network<T>, data: Vec<Sample<T>>) -> f32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `minimize` is never used
[INFO] [stdout]   --> src/math.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn minimize<VectorType, ScalarType>(subject:        &Functional<VectorType, ScalarType>,
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/mnistfiles.rs:40:2
[INFO] [stdout]    |
[INFO] [stdout] 40 |     create_dir_all(cache_dir.as_path());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let _ = create_dir_all(cache_dir.as_path());
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/network.rs:453:18
[INFO] [stdout]     |
[INFO] [stdout] 453 |         assert!(false, format!("{:?} (left: {:?}, right: {:?})", message, left, right));
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the `assert!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 453 -         assert!(false, format!("{:?} (left: {:?}, right: {:?})", message, left, right));
[INFO] [stdout] 453 +         assert!(false, "{:?} (left: {:?}, right: {:?})", message, left, right);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/network.rs:462:18
[INFO] [stdout]     |
[INFO] [stdout] 462 |         assert!(false, format!("{:?} (left: {:?}, right: {:?})", message, left, right));
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the `assert!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 462 -         assert!(false, format!("{:?} (left: {:?}, right: {:?})", message, left, right));
[INFO] [stdout] 462 +         assert!(false, "{:?} (left: {:?}, right: {:?})", message, left, right);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.44s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "52f33bbfaeaf211793094a54ae2121a44aad3fd5f9c341b97c926eda12d1144c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52f33bbfaeaf211793094a54ae2121a44aad3fd5f9c341b97c926eda12d1144c", kill_on_drop: false }`
[INFO] [stdout] 52f33bbfaeaf211793094a54ae2121a44aad3fd5f9c341b97c926eda12d1144c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a33977b042fe05adfde61283c307935b6f6d432a4f0c3c394bab47dd810b7968
[INFO] running `Command { std: "docker" "start" "-a" "a33977b042fe05adfde61283c307935b6f6d432a4f0c3c394bab47dd810b7968", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::vec::Vec`
[INFO] [stderr]   --> src/mnistfiles.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::vec::Vec;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Fn`
[INFO] [stderr]   --> src/network.rs:18:26
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::ops::{Add, Mul, Fn};
[INFO] [stderr]    |                          ^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/network.rs:195:17
[INFO] [stderr]     |
[INFO] [stderr] 195 |         let mut der = (&outputs[n-1] - expected_output);
[INFO] [stderr]     |                       ^                               ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 195 -         let mut der = (&outputs[n-1] - expected_output);
[INFO] [stderr] 195 +         let mut der = &outputs[n-1] - expected_output;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stderr]  --> src/mnistfiles.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::env::home_dir;
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stderr]   --> src/mnistfiles.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 |     match home_dir() {
[INFO] [stderr]    |           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stderr]   --> src/mnistfiles.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 |     match home_dir() {
[INFO] [stderr]    |           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/math.rs:24:54
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn minimize<VectorType, ScalarType>(subject:        &Functional<VectorType, ScalarType>,
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn minimize<VectorType, ScalarType>(subject:        &dyn Functional<VectorType, ScalarType>,
[INFO] [stderr]    |                                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/math.rs:27:48
[INFO] [stderr]    |
[INFO] [stderr] 27 | ...                   on_new:         &Fn(&VectorType) -> bool,
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 27 |                                     on_new:         &dyn Fn(&VectorType) -> bool,
[INFO] [stderr]    |                                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ignored`
[INFO] [stderr]   --> src/network.rs:76:61
[INFO] [stderr]    |
[INFO] [stderr] 76 |             biases:  Vector::zeros(num_neurons)            .apply(&(|ignored| generator())), 
[INFO] [stderr]    |                                                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ignored`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ignored`
[INFO] [stderr]   --> src/network.rs:77:61
[INFO] [stderr]    |
[INFO] [stderr] 77 |             weights: Matrix::zeros(num_neurons, num_inputs).apply(&(|ignored| generator()))
[INFO] [stderr]    |                                                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ignored`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/network.rs:272:7
[INFO] [stderr]     |
[INFO] [stderr] 272 |         let n = data.len();
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/math.rs:41:7
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let mut value: ScalarType = subject.eval(&estimation);
[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: function `random` is never used
[INFO] [stderr]   --> src/network.rs:61:4
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn random<T>() -> T where T: Float + Rand {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `minimize` is never used
[INFO] [stderr]   --> src/math.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn minimize<VectorType, ScalarType>(subject:        &Functional<VectorType, ScalarType>,
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/mnistfiles.rs:40:2
[INFO] [stderr]    |
[INFO] [stderr] 40 |     create_dir_all(cache_dir.as_path());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let _ = create_dir_all(cache_dir.as_path());
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `neurocr` (lib) generated 16 warnings (run `cargo fix --lib -p neurocr` to apply 9 suggestions)
[INFO] [stderr] warning: unused import: `std::vec::Vec`
[INFO] [stderr]   --> src/mnistfiles.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::vec::Vec;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/network.rs:500:2
[INFO] [stderr]     |
[INFO] [stderr] 500 |     /// let us teach network to differ horizontal from vertial lines on 2-by-2 image
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/network.rs:526:2
[INFO] [stderr]     |
[INFO] [stderr] 526 |     /// let us teach network to differ horizontal from vertial lines on 2-by-2 image
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/network.rs:561:2
[INFO] [stderr]     |
[INFO] [stderr] 561 |     /// let us teach network to differ horizontal from vertial lines on 2-by-2 image
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_sigmoid` is never used
[INFO] [stderr]   --> src/network.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn test_sigmoid() {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `random` is never used
[INFO] [stderr]   --> src/network.rs:61:4
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn random<T>() -> T where T: Float + Rand {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `asses_quality` is never used
[INFO] [stderr]    --> src/network.rs:549:4
[INFO] [stderr]     |
[INFO] [stderr] 549 | fn asses_quality<T: Debug + Float + FromPrimitive + 'static>(network: Network<T>, data: Vec<Sample<T>>) -> f32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/network.rs:453:18
[INFO] [stderr]     |
[INFO] [stderr] 453 |         assert!(false, format!("{:?} (left: {:?}, right: {:?})", message, left, right));
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the `assert!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 453 -         assert!(false, format!("{:?} (left: {:?}, right: {:?})", message, left, right));
[INFO] [stderr] 453 +         assert!(false, "{:?} (left: {:?}, right: {:?})", message, left, right);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/network.rs:462:18
[INFO] [stderr]     |
[INFO] [stderr] 462 |         assert!(false, format!("{:?} (left: {:?}, right: {:?})", message, left, right));
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the `assert!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 462 -         assert!(false, format!("{:?} (left: {:?}, right: {:?})", message, left, right));
[INFO] [stderr] 462 +         assert!(false, "{:?} (left: {:?}, right: {:?})", message, left, right);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `neurocr` (lib test) generated 22 warnings (13 duplicates) (run `cargo fix --lib -p neurocr --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/neurocr-69e078b67e136270)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test network::test_eval ... ok
[INFO] [stdout] test network::test_sampe_grad ... ok
[INFO] [stdout] test network::init ... ok
[INFO] [stdout] test network::test_eval_layers ... ok
[INFO] [stdout] test network::test_batch_grad ... ok
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/neurocr-19f32d3533c93931)
[INFO] [stdout] test network::test_learning ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests neurocr
[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] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/network.rs:195:17
[INFO] [stderr]     |
[INFO] [stderr] 195 |         let mut der = (&outputs[n-1] - expected_output);
[INFO] [stderr]     |                       ^                               ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 195 -         let mut der = (&outputs[n-1] - expected_output);
[INFO] [stderr] 195 +         let mut der = &outputs[n-1] - expected_output;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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] running `Command { std: "docker" "inspect" "a33977b042fe05adfde61283c307935b6f6d432a4f0c3c394bab47dd810b7968", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a33977b042fe05adfde61283c307935b6f6d432a4f0c3c394bab47dd810b7968", kill_on_drop: false }`
[INFO] [stdout] a33977b042fe05adfde61283c307935b6f6d432a4f0c3c394bab47dd810b7968
[INFO] testing legeyda/neurocr against beta-2024-01-09 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flegeyda%2Fneurocr" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/legeyda/neurocr on toolchain beta-2024-01-09
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-01-09" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/legeyda/neurocr
[INFO] finished tweaking git repo https://github.com/legeyda/neurocr
[INFO] tweaked toml for git repo https://github.com/legeyda/neurocr written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/legeyda/neurocr 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" "+beta-2024-01-09" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+beta-2024-01-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4e24b338d4dac77133443b3214cd4b7e3be1aa55d139c66be2e45f3f737f2ef
[INFO] running `Command { std: "docker" "start" "-a" "b4e24b338d4dac77133443b3214cd4b7e3be1aa55d139c66be2e45f3f737f2ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4e24b338d4dac77133443b3214cd4b7e3be1aa55d139c66be2e45f3f737f2ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4e24b338d4dac77133443b3214cd4b7e3be1aa55d139c66be2e45f3f737f2ef", kill_on_drop: false }`
[INFO] [stdout] b4e24b338d4dac77133443b3214cd4b7e3be1aa55d139c66be2e45f3f737f2ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2024-01-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76f5a88a1b9e5c64002e022bc9d79225f6b9375f7d7af8edd1d1d7eebb2ef652
[INFO] running `Command { std: "docker" "start" "-a" "76f5a88a1b9e5c64002e022bc9d79225f6b9375f7d7af8edd1d1d7eebb2ef652", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling num-traits v0.1.42
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling matrixmultiply v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling byteorder v1.2.1
[INFO] [stderr]    Compiling termcolor v0.3.4
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling mnist v0.4.0
[INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.24/src/serialize.rs:1155:5
[INFO] [stdout]      |
[INFO] [stdout] 1155 |     fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'static, T>, D::Error> {
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     the parameter type `T` must be valid for the static lifetime...
[INFO] [stdout]      |     ...so that the type `T` will meet its required lifetime bounds...
[INFO] [stdout]      |
[INFO] [stdout] note: ...that is required by this bound
[INFO] [stdout]     --> /rustc/650745ceb2ae60e04f8cd7bfb671fc37239533e4/library/alloc/src/borrow.rs:180:30
[INFO] [stdout] help: consider adding an explicit lifetime bound
[INFO] [stdout]      |
[INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T>
[INFO] [stdout]      |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.3.20
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling atty v0.2.6
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling regex v0.2.6
[INFO] [stderr]    Compiling simple_logger v0.5.0
[INFO] [stderr]    Compiling num-integer v0.1.35
[INFO] [stderr]    Compiling num-iter v0.1.34
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0310`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "76f5a88a1b9e5c64002e022bc9d79225f6b9375f7d7af8edd1d1d7eebb2ef652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76f5a88a1b9e5c64002e022bc9d79225f6b9375f7d7af8edd1d1d7eebb2ef652", kill_on_drop: false }`
[INFO] [stdout] 76f5a88a1b9e5c64002e022bc9d79225f6b9375f7d7af8edd1d1d7eebb2ef652
