Oct 27 08:25:08.827 INFO checking ammongit/markov-music against try#19f01b935b91481fd445b16b533d2f87661bf12e for pr-55192-2
Oct 27 08:25:08.828 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192-2/worker-3/try#19f01b935b91481fd445b16b533d2f87661bf12e:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-3/pr-55192-2/try#19f01b935b91481fd445b16b533d2f87661bf12e:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +19f01b935b91481fd445b16b533d2f87661bf12e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 27 08:25:09.127 INFO blam! 24d1674ce29a3cfa0d1045c17554872323b89259552f66592114524203916586
Oct 27 08:25:09.128 INFO running `"docker" "start" "-a" "24d1674ce29a3cfa0d1045c17554872323b89259552f66592114524203916586"`
Oct 27 08:25:10.112 INFO kablam! usermod: no changes
Oct 27 08:25:10.240 INFO kablam!    Compiling libsqlite3-sys v0.9.1
Oct 27 08:25:10.240 INFO kablam!     Checking term_size v0.3.0
Oct 27 08:25:10.240 INFO kablam!     Checking atty v0.2.2
Oct 27 08:25:10.240 INFO kablam!     Checking thread-id v3.2.0
Oct 27 08:25:10.240 INFO kablam!    Compiling syn v0.11.11
Oct 27 08:25:10.243 INFO kablam!     Checking mpd v0.0.12
Oct 27 08:25:12.455 INFO kablam!     Checking simple-logging v2.0.1
Oct 27 08:25:12.587 INFO kablam!     Checking textwrap v0.7.0
Oct 27 08:25:14.687 INFO kablam!     Checking clap v2.26.0
Oct 27 08:25:19.739 INFO kablam!    Compiling serde_derive_internals v0.19.0
Oct 27 08:25:19.739 INFO kablam!    Compiling diesel_derives v1.1.0
Oct 27 08:25:23.258 INFO kablam!    Compiling serde_derive v1.0.27
Oct 27 08:25:30.001 INFO kablam!     Checking diesel v1.1.1
Oct 27 08:25:36.659 INFO kablam!     Checking serde v1.0.11
Oct 27 08:25:46.475 INFO kablam!     Checking toml v0.4.4
Oct 27 08:25:49.975 INFO kablam!     Checking markov-music v0.1.0 (/source)
Oct 27 08:25:51.651 INFO kablam! warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
Oct 27 08:25:51.651 INFO kablam!   --> src/utils.rs:25:40
Oct 27 08:25:51.651 INFO kablam!    |
Oct 27 08:25:51.651 INFO kablam! 25 |     pub static ref HOME_DIR: PathBuf = env::home_dir().expect("Unable to get home directory");
Oct 27 08:25:51.651 INFO kablam!    |                                        ^^^^^^^^^^^^^
Oct 27 08:25:51.651 INFO kablam!    |
Oct 27 08:25:51.651 INFO kablam!    = note: #[warn(deprecated)] on by default
Oct 27 08:25:51.651 INFO kablam! 
Oct 27 08:25:51.755 INFO kablam! warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
Oct 27 08:25:51.755 INFO kablam!   --> src/utils.rs:25:40
Oct 27 08:25:51.755 INFO kablam!    |
Oct 27 08:25:51.755 INFO kablam! 25 |     pub static ref HOME_DIR: PathBuf = env::home_dir().expect("Unable to get home directory");
Oct 27 08:25:51.755 INFO kablam!    |                                        ^^^^^^^^^^^^^
Oct 27 08:25:51.755 INFO kablam!    |
Oct 27 08:25:51.755 INFO kablam!    = note: #[warn(deprecated)] on by default
Oct 27 08:25:51.755 INFO kablam! 
Oct 27 08:25:52.109 INFO kablam! warning: function is never used: `random_key`
Oct 27 08:25:52.109 INFO kablam!   --> src/choose.rs:29:1
Oct 27 08:25:52.109 INFO kablam!    |
Oct 27 08:25:52.109 INFO kablam! 29 | pub fn random_key<'a, K: Eq + Hash, V>(map: &'a HashMap<K, V>, rng: &mut Rng) -> Option<&'a K> {
Oct 27 08:25:52.109 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.109 INFO kablam!    |
Oct 27 08:25:52.109 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 27 08:25:52.109 INFO kablam! 
Oct 27 08:25:52.109 INFO kablam! warning: function is never used: `roulette_wheel`
Oct 27 08:25:52.109 INFO kablam!   --> src/choose.rs:34:1
Oct 27 08:25:52.109 INFO kablam!    |
Oct 27 08:25:52.109 INFO kablam! 34 | pub fn roulette_wheel<'a, K: Eq + Hash>(map: &'a HashMap<K, f32>, rng: &mut Rng) -> Option<&'a K> {
Oct 27 08:25:52.109 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.109 INFO kablam! 
Oct 27 08:25:52.110 INFO kablam! warning: method is never used: `modify_weight`
Oct 27 08:25:52.110 INFO kablam!   --> src/markov.rs:47:5
Oct 27 08:25:52.110 INFO kablam!    |
Oct 27 08:25:52.110 INFO kablam! 47 |     pub fn modify_weight(&mut self, prev: T, next: T, diff: f32) {
Oct 27 08:25:52.110 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.110 INFO kablam! 
Oct 27 08:25:52.110 INFO kablam! warning: method is never used: `clear`
Oct 27 08:25:52.110 INFO kablam!   --> src/markov.rs:55:5
Oct 27 08:25:52.110 INFO kablam!    |
Oct 27 08:25:52.110 INFO kablam! 55 | /     pub fn clear<U>(&mut self, item: &U)
Oct 27 08:25:52.110 INFO kablam! 56 | |     where U: Borrow<T>,
Oct 27 08:25:52.114 INFO kablam! 57 | |           U: ?Sized,
Oct 27 08:25:52.114 INFO kablam! 58 | |     {
Oct 27 08:25:52.114 INFO kablam! ...  |
Oct 27 08:25:52.114 INFO kablam! 61 | |         }
Oct 27 08:25:52.114 INFO kablam! 62 | |     }
Oct 27 08:25:52.114 INFO kablam!    | |_____^
Oct 27 08:25:52.114 INFO kablam! 
Oct 27 08:25:52.114 INFO kablam! warning: method is never used: `start`
Oct 27 08:25:52.114 INFO kablam!   --> src/markov.rs:64:5
Oct 27 08:25:52.114 INFO kablam!    |
Oct 27 08:25:52.114 INFO kablam! 64 |     pub fn start(&self, rng: &mut Rng) -> Option<&T> {
Oct 27 08:25:52.114 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.114 INFO kablam! 
Oct 27 08:25:52.114 INFO kablam! warning: method is never used: `next`
Oct 27 08:25:52.114 INFO kablam!   --> src/markov.rs:68:5
Oct 27 08:25:52.114 INFO kablam!    |
Oct 27 08:25:52.114 INFO kablam! 68 | /     pub fn next<U>(&self, current: &U, rng: &mut Rng) -> Option<&T>
Oct 27 08:25:52.114 INFO kablam! 69 | |     where U: Borrow<T>,
Oct 27 08:25:52.114 INFO kablam! 70 | |           U: ?Sized,
Oct 27 08:25:52.114 INFO kablam! 71 | |     {
Oct 27 08:25:52.114 INFO kablam! ...  |
Oct 27 08:25:52.114 INFO kablam! 75 | |         }
Oct 27 08:25:52.114 INFO kablam! 76 | |     }
Oct 27 08:25:52.114 INFO kablam!    | |_____^
Oct 27 08:25:52.114 INFO kablam! 
Oct 27 08:25:52.114 INFO kablam! warning: method is never used: `possible_next`
Oct 27 08:25:52.114 INFO kablam!   --> src/markov.rs:78:5
Oct 27 08:25:52.114 INFO kablam!    |
Oct 27 08:25:52.114 INFO kablam! 78 | /     pub fn possible_next<U>(&self, current: &U) -> Option<&HashMap<T, f32>>
Oct 27 08:25:52.114 INFO kablam! 79 | |     where U: Borrow<T>,
Oct 27 08:25:52.114 INFO kablam! 80 | |           U: ?Sized,
Oct 27 08:25:52.114 INFO kablam! 81 | |     {
Oct 27 08:25:52.114 INFO kablam! 82 | |         self.assocs.get(current.borrow())
Oct 27 08:25:52.114 INFO kablam! 83 | |     }
Oct 27 08:25:52.114 INFO kablam!    | |_____^
Oct 27 08:25:52.114 INFO kablam! 
Oct 27 08:25:52.114 INFO kablam! warning: function is never used: `split_cmd`
Oct 27 08:25:52.114 INFO kablam!   --> src/socket.rs:28:1
Oct 27 08:25:52.114 INFO kablam!    |
Oct 27 08:25:52.114 INFO kablam! 28 | fn split_cmd(command: &mut str) -> (&mut str, &mut str) {
Oct 27 08:25:52.114 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.114 INFO kablam! 
Oct 27 08:25:52.114 INFO kablam! warning: struct is never constructed: `SocketServer`
Oct 27 08:25:52.114 INFO kablam!   --> src/socket.rs:36:1
Oct 27 08:25:52.114 INFO kablam!    |
Oct 27 08:25:52.114 INFO kablam! 36 | pub struct SocketServer {
Oct 27 08:25:52.114 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.114 INFO kablam! 
Oct 27 08:25:52.114 INFO kablam! warning: method is never used: `bind`
Oct 27 08:25:52.114 INFO kablam!   --> src/socket.rs:41:5
Oct 27 08:25:52.114 INFO kablam!    |
Oct 27 08:25:52.114 INFO kablam! 41 |     pub fn bind(config: &DaemonConfig) -> Result<Self> {
Oct 27 08:25:52.114 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.114 INFO kablam! 
Oct 27 08:25:52.114 INFO kablam! warning: method is never used: `wait`
Oct 27 08:25:52.114 INFO kablam!   --> src/socket.rs:47:5
Oct 27 08:25:52.114 INFO kablam!    |
Oct 27 08:25:52.115 INFO kablam! 47 |     pub fn wait(&self) -> Result<()> {
Oct 27 08:25:52.115 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.115 INFO kablam! 
Oct 27 08:25:52.115 INFO kablam! warning: method is never used: `respond`
Oct 27 08:25:52.115 INFO kablam!   --> src/socket.rs:58:5
Oct 27 08:25:52.115 INFO kablam!    |
Oct 27 08:25:52.115 INFO kablam! 58 |     fn respond(&self, command: &mut str) -> Result<&'static str> {
Oct 27 08:25:52.115 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.115 INFO kablam! 
Oct 27 08:25:52.115 INFO kablam! warning: method is never used: `set_recommend`
Oct 27 08:25:52.115 INFO kablam!   --> src/socket.rs:72:5
Oct 27 08:25:52.115 INFO kablam!    |
Oct 27 08:25:52.115 INFO kablam! 72 |     fn set_recommend(&self, arg: &mut str) -> &'static str {
Oct 27 08:25:52.115 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.115 INFO kablam! 
Oct 27 08:25:52.115 INFO kablam! warning: function is never used: `empty_mut_str`
Oct 27 08:25:52.115 INFO kablam!   --> src/utils.rs:29:1
Oct 27 08:25:52.115 INFO kablam!    |
Oct 27 08:25:52.115 INFO kablam! 29 | pub fn empty_mut_str() -> &'static mut str {
Oct 27 08:25:52.115 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.115 INFO kablam! 
Oct 27 08:25:52.115 INFO kablam! warning: function is never used: `sigmoid`
Oct 27 08:25:52.115 INFO kablam!   --> src/utils.rs:34:1
Oct 27 08:25:52.115 INFO kablam!    |
Oct 27 08:25:52.115 INFO kablam! 34 | pub fn sigmoid(n: f32) -> f32 {
Oct 27 08:25:52.115 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.115 INFO kablam! 
Oct 27 08:25:52.214 INFO kablam! warning: function is never used: `random_key`
Oct 27 08:25:52.214 INFO kablam!   --> src/choose.rs:29:1
Oct 27 08:25:52.214 INFO kablam!    |
Oct 27 08:25:52.214 INFO kablam! 29 | pub fn random_key<'a, K: Eq + Hash, V>(map: &'a HashMap<K, V>, rng: &mut Rng) -> Option<&'a K> {
Oct 27 08:25:52.214 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.214 INFO kablam!    |
Oct 27 08:25:52.214 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 27 08:25:52.215 INFO kablam! 
Oct 27 08:25:52.215 INFO kablam! warning: function is never used: `roulette_wheel`
Oct 27 08:25:52.215 INFO kablam!   --> src/choose.rs:34:1
Oct 27 08:25:52.215 INFO kablam!    |
Oct 27 08:25:52.215 INFO kablam! 34 | pub fn roulette_wheel<'a, K: Eq + Hash>(map: &'a HashMap<K, f32>, rng: &mut Rng) -> Option<&'a K> {
Oct 27 08:25:52.215 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.215 INFO kablam! 
Oct 27 08:25:52.215 INFO kablam! warning: method is never used: `modify_weight`
Oct 27 08:25:52.215 INFO kablam!   --> src/markov.rs:47:5
Oct 27 08:25:52.215 INFO kablam!    |
Oct 27 08:25:52.215 INFO kablam! 47 |     pub fn modify_weight(&mut self, prev: T, next: T, diff: f32) {
Oct 27 08:25:52.215 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.215 INFO kablam! 
Oct 27 08:25:52.215 INFO kablam! warning: method is never used: `clear`
Oct 27 08:25:52.215 INFO kablam!   --> src/markov.rs:55:5
Oct 27 08:25:52.215 INFO kablam!    |
Oct 27 08:25:52.215 INFO kablam! 55 | /     pub fn clear<U>(&mut self, item: &U)
Oct 27 08:25:52.215 INFO kablam! 56 | |     where U: Borrow<T>,
Oct 27 08:25:52.215 INFO kablam! 57 | |           U: ?Sized,
Oct 27 08:25:52.215 INFO kablam! 58 | |     {
Oct 27 08:25:52.215 INFO kablam! ...  |
Oct 27 08:25:52.215 INFO kablam! 61 | |         }
Oct 27 08:25:52.215 INFO kablam! 62 | |     }
Oct 27 08:25:52.215 INFO kablam!    | |_____^
Oct 27 08:25:52.215 INFO kablam! 
Oct 27 08:25:52.215 INFO kablam! warning: method is never used: `start`
Oct 27 08:25:52.215 INFO kablam!   --> src/markov.rs:64:5
Oct 27 08:25:52.215 INFO kablam!    |
Oct 27 08:25:52.215 INFO kablam! 64 |     pub fn start(&self, rng: &mut Rng) -> Option<&T> {
Oct 27 08:25:52.215 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.215 INFO kablam! 
Oct 27 08:25:52.215 INFO kablam! warning: method is never used: `next`
Oct 27 08:25:52.215 INFO kablam!   --> src/markov.rs:68:5
Oct 27 08:25:52.215 INFO kablam!    |
Oct 27 08:25:52.215 INFO kablam! 68 | /     pub fn next<U>(&self, current: &U, rng: &mut Rng) -> Option<&T>
Oct 27 08:25:52.215 INFO kablam! 69 | |     where U: Borrow<T>,
Oct 27 08:25:52.215 INFO kablam! 70 | |           U: ?Sized,
Oct 27 08:25:52.215 INFO kablam! 71 | |     {
Oct 27 08:25:52.215 INFO kablam! ...  |
Oct 27 08:25:52.215 INFO kablam! 75 | |         }
Oct 27 08:25:52.215 INFO kablam! 76 | |     }
Oct 27 08:25:52.215 INFO kablam!    | |_____^
Oct 27 08:25:52.216 INFO kablam! 
Oct 27 08:25:52.216 INFO kablam! warning: method is never used: `possible_next`
Oct 27 08:25:52.216 INFO kablam!   --> src/markov.rs:78:5
Oct 27 08:25:52.216 INFO kablam!    |
Oct 27 08:25:52.216 INFO kablam! 78 | /     pub fn possible_next<U>(&self, current: &U) -> Option<&HashMap<T, f32>>
Oct 27 08:25:52.216 INFO kablam! 79 | |     where U: Borrow<T>,
Oct 27 08:25:52.216 INFO kablam! 80 | |           U: ?Sized,
Oct 27 08:25:52.216 INFO kablam! 81 | |     {
Oct 27 08:25:52.216 INFO kablam! 82 | |         self.assocs.get(current.borrow())
Oct 27 08:25:52.216 INFO kablam! 83 | |     }
Oct 27 08:25:52.216 INFO kablam!    | |_____^
Oct 27 08:25:52.216 INFO kablam! 
Oct 27 08:25:52.216 INFO kablam! warning: function is never used: `split_cmd`
Oct 27 08:25:52.216 INFO kablam!   --> src/socket.rs:28:1
Oct 27 08:25:52.216 INFO kablam!    |
Oct 27 08:25:52.216 INFO kablam! 28 | fn split_cmd(command: &mut str) -> (&mut str, &mut str) {
Oct 27 08:25:52.216 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.216 INFO kablam! 
Oct 27 08:25:52.216 INFO kablam! warning: struct is never constructed: `SocketServer`
Oct 27 08:25:52.216 INFO kablam!   --> src/socket.rs:36:1
Oct 27 08:25:52.216 INFO kablam!    |
Oct 27 08:25:52.216 INFO kablam! 36 | pub struct SocketServer {
Oct 27 08:25:52.216 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.216 INFO kablam! 
Oct 27 08:25:52.216 INFO kablam! warning: method is never used: `bind`
Oct 27 08:25:52.216 INFO kablam!   --> src/socket.rs:41:5
Oct 27 08:25:52.216 INFO kablam!    |
Oct 27 08:25:52.216 INFO kablam! 41 |     pub fn bind(config: &DaemonConfig) -> Result<Self> {
Oct 27 08:25:52.216 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.216 INFO kablam! 
Oct 27 08:25:52.216 INFO kablam! warning: method is never used: `wait`
Oct 27 08:25:52.216 INFO kablam!   --> src/socket.rs:47:5
Oct 27 08:25:52.216 INFO kablam!    |
Oct 27 08:25:52.216 INFO kablam! 47 |     pub fn wait(&self) -> Result<()> {
Oct 27 08:25:52.216 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.216 INFO kablam! 
Oct 27 08:25:52.216 INFO kablam! warning: method is never used: `respond`
Oct 27 08:25:52.216 INFO kablam!   --> src/socket.rs:58:5
Oct 27 08:25:52.216 INFO kablam!    |
Oct 27 08:25:52.216 INFO kablam! 58 |     fn respond(&self, command: &mut str) -> Result<&'static str> {
Oct 27 08:25:52.216 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.216 INFO kablam! 
Oct 27 08:25:52.216 INFO kablam! warning: method is never used: `set_recommend`
Oct 27 08:25:52.216 INFO kablam!   --> src/socket.rs:72:5
Oct 27 08:25:52.216 INFO kablam!    |
Oct 27 08:25:52.216 INFO kablam! 72 |     fn set_recommend(&self, arg: &mut str) -> &'static str {
Oct 27 08:25:52.216 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.216 INFO kablam! 
Oct 27 08:25:52.216 INFO kablam! warning: function is never used: `empty_mut_str`
Oct 27 08:25:52.216 INFO kablam!   --> src/utils.rs:29:1
Oct 27 08:25:52.216 INFO kablam!    |
Oct 27 08:25:52.216 INFO kablam! 29 | pub fn empty_mut_str() -> &'static mut str {
Oct 27 08:25:52.216 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.216 INFO kablam! 
Oct 27 08:25:52.216 INFO kablam! warning: function is never used: `sigmoid`
Oct 27 08:25:52.216 INFO kablam!   --> src/utils.rs:34:1
Oct 27 08:25:52.216 INFO kablam!    |
Oct 27 08:25:52.216 INFO kablam! 34 | pub fn sigmoid(n: f32) -> f32 {
Oct 27 08:25:52.216 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:52.216 INFO kablam! 
Oct 27 08:25:52.251 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 42.11s
Oct 27 08:25:52.263 INFO kablam! su: No module specific data is present
Oct 27 08:25:52.571 INFO running `"docker" "rm" "-f" "24d1674ce29a3cfa0d1045c17554872323b89259552f66592114524203916586"`
Oct 27 08:25:52.774 INFO blam! 24d1674ce29a3cfa0d1045c17554872323b89259552f66592114524203916586