[INFO] updating cached repository ammongit/markov-music
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ammongit/markov-music
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ammongit/markov-music" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/ammongit/markov-music"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/ammongit/markov-music'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ammongit/markov-music" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/ammongit/markov-music"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/ammongit/markov-music'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 68dea06d36893e7050d554ddc802504ddc3dddff
[INFO] sha for GitHub repo ammongit/markov-music: 68dea06d36893e7050d554ddc802504ddc3dddff
[INFO] validating manifest of ammongit/markov-music on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ammongit/markov-music on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ammongit/markov-music
[INFO] finished frobbing ammongit/markov-music
[INFO] frobbed toml for ammongit/markov-music written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/ammongit/markov-music/Cargo.toml
[INFO] started frobbing ammongit/markov-music
[INFO] finished frobbing ammongit/markov-music
[INFO] frobbed toml for ammongit/markov-music written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/ammongit/markov-music/Cargo.toml
[INFO] crate ammongit/markov-music already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ammongit/markov-music against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-7/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/ammongit/markov-music:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c096b7e7807a206c375d9d702fbc28127143f1e7d36546e4e976fbad9960b210
[INFO] running `"docker" "start" "-a" "c096b7e7807a206c375d9d702fbc28127143f1e7d36546e4e976fbad9960b210"`
[INFO] [stderr]    Compiling libsqlite3-sys v0.9.1
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking thread-id v3.2.0
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking mpd v0.0.12
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling diesel_derives v1.1.0
[INFO] [stderr]     Checking textwrap v0.7.0
[INFO] [stderr]     Checking simple-logging v2.0.1
[INFO] [stderr]     Checking clap v2.26.0
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]     Checking diesel v1.1.1
[INFO] [stderr]     Checking serde v1.0.11
[INFO] [stderr]     Checking toml v0.4.4
[INFO] [stderr]     Checking markov-music v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] 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.
[INFO] [stderr]   --> src/utils.rs:25:40
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub static ref HOME_DIR: PathBuf = env::home_dir().expect("Unable to get home directory");
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] 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.
[INFO] [stderr]   --> src/utils.rs:25:40
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub static ref HOME_DIR: PathBuf = env::home_dir().expect("Unable to get home directory");
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `random_key`
[INFO] [stderr]   --> src/choose.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn random_key<'a, K: Eq + Hash, V>(map: &'a HashMap<K, V>, rng: &mut Rng) -> Option<&'a K> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `roulette_wheel`
[INFO] [stderr]   --> src/choose.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub fn roulette_wheel<'a, K: Eq + Hash>(map: &'a HashMap<K, f32>, rng: &mut Rng) -> Option<&'a K> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `modify_weight`
[INFO] [stderr]   --> src/markov.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn modify_weight(&mut self, prev: T, next: T, diff: f32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clear`
[INFO] [stderr]   --> src/markov.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 | /     pub fn clear<U>(&mut self, item: &U)
[INFO] [stderr] 56 | |     where U: Borrow<T>,
[INFO] [stderr] 57 | |           U: ?Sized,
[INFO] [stderr] 58 | |     {
[INFO] [stderr] ...  |
[INFO] [stderr] 61 | |         }
[INFO] [stderr] 62 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `start`
[INFO] [stderr]   --> src/markov.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn start(&self, rng: &mut Rng) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next`
[INFO] [stderr]   --> src/markov.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 | /     pub fn next<U>(&self, current: &U, rng: &mut Rng) -> Option<&T>
[INFO] [stderr] 69 | |     where U: Borrow<T>,
[INFO] [stderr] 70 | |           U: ?Sized,
[INFO] [stderr] 71 | |     {
[INFO] [stderr] ...  |
[INFO] [stderr] 75 | |         }
[INFO] [stderr] 76 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `possible_next`
[INFO] [stderr]   --> src/markov.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 | /     pub fn possible_next<U>(&self, current: &U) -> Option<&HashMap<T, f32>>
[INFO] [stderr] 79 | |     where U: Borrow<T>,
[INFO] [stderr] 80 | |           U: ?Sized,
[INFO] [stderr] 81 | |     {
[INFO] [stderr] 82 | |         self.assocs.get(current.borrow())
[INFO] [stderr] 83 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `split_cmd`
[INFO] [stderr]   --> src/socket.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn split_cmd(command: &mut str) -> (&mut str, &mut str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SocketServer`
[INFO] [stderr]   --> src/socket.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub struct SocketServer {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bind`
[INFO] [stderr]   --> src/socket.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn bind(config: &DaemonConfig) -> Result<Self> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `wait`
[INFO] [stderr]   --> src/socket.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn wait(&self) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `respond`
[INFO] [stderr]   --> src/socket.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn respond(&self, command: &mut str) -> Result<&'static str> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_recommend`
[INFO] [stderr]   --> src/socket.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn set_recommend(&self, arg: &mut str) -> &'static str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `empty_mut_str`
[INFO] [stderr]   --> src/utils.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn empty_mut_str() -> &'static mut str {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sigmoid`
[INFO] [stderr]   --> src/utils.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub fn sigmoid(n: f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `random_key`
[INFO] [stderr]   --> src/choose.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn random_key<'a, K: Eq + Hash, V>(map: &'a HashMap<K, V>, rng: &mut Rng) -> Option<&'a K> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `roulette_wheel`
[INFO] [stderr]   --> src/choose.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub fn roulette_wheel<'a, K: Eq + Hash>(map: &'a HashMap<K, f32>, rng: &mut Rng) -> Option<&'a K> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `modify_weight`
[INFO] [stderr]   --> src/markov.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn modify_weight(&mut self, prev: T, next: T, diff: f32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clear`
[INFO] [stderr]   --> src/markov.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 | /     pub fn clear<U>(&mut self, item: &U)
[INFO] [stderr] 56 | |     where U: Borrow<T>,
[INFO] [stderr] 57 | |           U: ?Sized,
[INFO] [stderr] 58 | |     {
[INFO] [stderr] ...  |
[INFO] [stderr] 61 | |         }
[INFO] [stderr] 62 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `start`
[INFO] [stderr]   --> src/markov.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn start(&self, rng: &mut Rng) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next`
[INFO] [stderr]   --> src/markov.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 | /     pub fn next<U>(&self, current: &U, rng: &mut Rng) -> Option<&T>
[INFO] [stderr] 69 | |     where U: Borrow<T>,
[INFO] [stderr] 70 | |           U: ?Sized,
[INFO] [stderr] 71 | |     {
[INFO] [stderr] ...  |
[INFO] [stderr] 75 | |         }
[INFO] [stderr] 76 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `possible_next`
[INFO] [stderr]   --> src/markov.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 | /     pub fn possible_next<U>(&self, current: &U) -> Option<&HashMap<T, f32>>
[INFO] [stderr] 79 | |     where U: Borrow<T>,
[INFO] [stderr] 80 | |           U: ?Sized,
[INFO] [stderr] 81 | |     {
[INFO] [stderr] 82 | |         self.assocs.get(current.borrow())
[INFO] [stderr] 83 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `split_cmd`
[INFO] [stderr]   --> src/socket.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn split_cmd(command: &mut str) -> (&mut str, &mut str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SocketServer`
[INFO] [stderr]   --> src/socket.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub struct SocketServer {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bind`
[INFO] [stderr]   --> src/socket.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn bind(config: &DaemonConfig) -> Result<Self> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `wait`
[INFO] [stderr]   --> src/socket.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn wait(&self) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `respond`
[INFO] [stderr]   --> src/socket.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn respond(&self, command: &mut str) -> Result<&'static str> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_recommend`
[INFO] [stderr]   --> src/socket.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn set_recommend(&self, arg: &mut str) -> &'static str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `empty_mut_str`
[INFO] [stderr]   --> src/utils.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn empty_mut_str() -> &'static mut str {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sigmoid`
[INFO] [stderr]   --> src/utils.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub fn sigmoid(n: f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.77s
[INFO] running `"docker" "inspect" "c096b7e7807a206c375d9d702fbc28127143f1e7d36546e4e976fbad9960b210"`
[INFO] running `"docker" "rm" "-f" "c096b7e7807a206c375d9d702fbc28127143f1e7d36546e4e976fbad9960b210"`
[INFO] [stdout] c096b7e7807a206c375d9d702fbc28127143f1e7d36546e4e976fbad9960b210