[INFO] updating cached repository https://github.com/mallatai/rastfm
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 63e2c48f129a0b6518eed03f21f387b69b58e789
[INFO] checking mallatai/rastfm against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmallatai%2Frastfm" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mallatai/rastfm on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mallatai/rastfm
[INFO] finished tweaking git repo https://github.com/mallatai/rastfm
[INFO] tweaked toml for git repo https://github.com/mallatai/rastfm written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mallatai/rastfm already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c26fe85a4cf63a87bd4728638836ca7b94777e73efccc53c71bdfc75a755714f
[INFO] running `"docker" "start" "-a" "c26fe85a4cf63a87bd4728638836ca7b94777e73efccc53c71bdfc75a755714f"`
[INFO] [stderr]     Checking serde_json v1.0.5
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking serde_urlencoded v0.5.1
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking hyper v0.11.6
[INFO] [stderr]     Checking rastfm v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `remove_file`
[INFO] [stderr]  --> src/rastfm/lastfm_api.rs:3:21
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs::{File, remove_file};
[INFO] [stderr]   |                     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/rastfm/lastfm_api.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::future`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use futures::future;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Response`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:13:38
[INFO] [stderr]    |
[INFO] [stderr] 13 | use hyper::client::{Client, Request, Response};
[INFO] [stderr]    |                                      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ContentLength`, `ContentType`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:16:21
[INFO] [stderr]    |
[INFO] [stderr] 16 | use hyper::header::{ContentLength, ContentType};
[INFO] [stderr]    |                     ^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hyper::Error`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use hyper::Error;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `File`, `remove_file`
[INFO] [stderr]  --> src/rastfm/api.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs::{File, remove_file};
[INFO] [stderr]   |               ^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/rastfm/api.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read`, `Write`
[INFO] [stderr]  --> src/rastfm/api.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{Read, Write};
[INFO] [stderr]   |               ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::Command`
[INFO] [stderr]  --> src/rastfm/api.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::process::Command;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/rastfm/api.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/rastfm/api.rs:8:11
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::{thread, time};
[INFO] [stderr]   |           ^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio_core::reactor::Core`
[INFO] [stderr]   --> src/rastfm/api.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use tokio_core::reactor::Core;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Future`, `Stream`
[INFO] [stderr]   --> src/rastfm/api.rs:11:15
[INFO] [stderr]    |
[INFO] [stderr] 11 | use futures::{Future, Stream};
[INFO] [stderr]    |               ^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::future`
[INFO] [stderr]   --> src/rastfm/api.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use futures::future;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Client`, `Response`
[INFO] [stderr]   --> src/rastfm/api.rs:13:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | use hyper::client::{Client, Response};
[INFO] [stderr]    |                     ^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::Value`
[INFO] [stderr]   --> src/rastfm/api.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use serde_json::Value;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crypto::md5::Md5`
[INFO] [stderr]   --> src/rastfm/api.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use crypto::md5::Md5;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crypto::digest::Digest`
[INFO] [stderr]   --> src/rastfm/api.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use crypto::digest::Digest;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `url_sig`
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |     let url_sig = build_signature(&params_slice);
[INFO] [stderr]     |         ^^^^^^^ help: consider prefixing with an underscore: `_url_sig`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `session_key`
[INFO] [stderr]   --> src/rastfm/api.rs:56:25
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn save_session_key(session_key: &SessionKey) {
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: consider prefixing with an underscore: `_session_key`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tracks`
[INFO] [stderr]   --> src/rastfm/api.rs:68:28
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn scrobble_tracks(tracks: &mut Vec<TrackInfo>) {
[INFO] [stderr]    |                            ^^^^^^ help: consider prefixing with an underscore: `_tracks`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let mut work = client.get(get_token_url).and_then(|res| {
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let mut auth_token = core.run(work).unwrap();
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let mut status = Command::new("/usr/bin/xdg-open")
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let mut work = client.get(session_url).and_then(move |res| {
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:149:9
[INFO] [stderr]     |
[INFO] [stderr] 149 |     let mut work = client.request(req).and_then(move |res| {
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ApiCredentials`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub struct ApiCredentials {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `AuthorizedApiCredentials`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:37:1
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub struct AuthorizedApiCredentials {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_req_body`
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:197:1
[INFO] [stderr]     |
[INFO] [stderr] 197 | fn make_req_body(params: &Vec<(&str, &str)>) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SESSION_KEY_FILE`
[INFO] [stderr]   --> src/rastfm/api.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | const SESSION_KEY_FILE: &str = "session_key";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `API_KEY`
[INFO] [stderr]   --> src/rastfm/api.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | const API_KEY: &str = "";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SHARED_SECRET`
[INFO] [stderr]   --> src/rastfm/api.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | const SHARED_SECRET: &str = "";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `SessionKey`
[INFO] [stderr]   --> src/rastfm/api.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | type SessionKey = String;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ApiCredentials`
[INFO] [stderr]   --> src/rastfm/api.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub struct ApiCredentials {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `AuthorizedApiCredentials`
[INFO] [stderr]   --> src/rastfm/api.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub struct AuthorizedApiCredentials {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `authorize`
[INFO] [stderr]   --> src/rastfm/api.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn authorize(&self) -> Option<AuthorizedApiCredentials> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_session`
[INFO] [stderr]   --> src/rastfm/api.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn get_session(&self) -> Option<SessionKey> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `save_session_key`
[INFO] [stderr]   --> src/rastfm/api.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn save_session_key(session_key: &SessionKey) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load_session_key`
[INFO] [stderr]   --> src/rastfm/api.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn load_session_key() -> Option<SessionKey> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scrobble_tracks`
[INFO] [stderr]   --> src/rastfm/api.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn scrobble_tracks(tracks: &mut Vec<TrackInfo>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `futures::AndThen` that must be used
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:152:13
[INFO] [stderr]     |
[INFO] [stderr] 152 | /             res.body().concat2().and_then(move |body| {
[INFO] [stderr] 153 | |                 let response_json: Value = serde_json::from_slice(&body).expect("from_slice error");
[INFO] [stderr] 154 | |                 println!("Got response: {}", response_json.to_string());
[INFO] [stderr] 155 | |
[INFO] [stderr] 156 | |                 Ok(())
[INFO] [stderr] 157 | |             });
[INFO] [stderr]     | |_______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: futures do nothing unless polled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 | /     File::create(Path::new(SESSION_KEY_FILE))
[INFO] [stderr] 169 | |             .map(|mut file| file.write_all(session_key.as_bytes()));
[INFO] [stderr]     | |____________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:177:5
[INFO] [stderr]     |
[INFO] [stderr] 177 | /     File::open(Path::new(SESSION_KEY_FILE))
[INFO] [stderr] 178 | |             .map(|mut f| f.read_to_string(&mut session_key));
[INFO] [stderr]     | |_____________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/rastfm/lastfm_api.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::future`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use futures::future;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Response`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:13:38
[INFO] [stderr]    |
[INFO] [stderr] 13 | use hyper::client::{Client, Request, Response};
[INFO] [stderr]    |                                      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ContentLength`, `ContentType`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:16:21
[INFO] [stderr]    |
[INFO] [stderr] 16 | use hyper::header::{ContentLength, ContentType};
[INFO] [stderr]    |                     ^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hyper::Error`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use hyper::Error;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `File`, `remove_file`
[INFO] [stderr]  --> src/rastfm/api.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs::{File, remove_file};
[INFO] [stderr]   |               ^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/rastfm/api.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read`, `Write`
[INFO] [stderr]  --> src/rastfm/api.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{Read, Write};
[INFO] [stderr]   |               ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::Command`
[INFO] [stderr]  --> src/rastfm/api.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::process::Command;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/rastfm/api.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/rastfm/api.rs:8:11
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::{thread, time};
[INFO] [stderr]   |           ^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio_core::reactor::Core`
[INFO] [stderr]   --> src/rastfm/api.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use tokio_core::reactor::Core;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Future`, `Stream`
[INFO] [stderr]   --> src/rastfm/api.rs:11:15
[INFO] [stderr]    |
[INFO] [stderr] 11 | use futures::{Future, Stream};
[INFO] [stderr]    |               ^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::future`
[INFO] [stderr]   --> src/rastfm/api.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use futures::future;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Client`, `Response`
[INFO] [stderr]   --> src/rastfm/api.rs:13:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | use hyper::client::{Client, Response};
[INFO] [stderr]    |                     ^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::Value`
[INFO] [stderr]   --> src/rastfm/api.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use serde_json::Value;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crypto::md5::Md5`
[INFO] [stderr]   --> src/rastfm/api.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use crypto::md5::Md5;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crypto::digest::Digest`
[INFO] [stderr]   --> src/rastfm/api.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use crypto::digest::Digest;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `url_sig`
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |     let url_sig = build_signature(&params_slice);
[INFO] [stderr]     |         ^^^^^^^ help: consider prefixing with an underscore: `_url_sig`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `session_key`
[INFO] [stderr]   --> src/rastfm/api.rs:56:25
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn save_session_key(session_key: &SessionKey) {
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: consider prefixing with an underscore: `_session_key`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tracks`
[INFO] [stderr]   --> src/rastfm/api.rs:68:28
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn scrobble_tracks(tracks: &mut Vec<TrackInfo>) {
[INFO] [stderr]    |                            ^^^^^^ help: consider prefixing with an underscore: `_tracks`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let mut work = client.get(get_token_url).and_then(|res| {
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let mut auth_token = core.run(work).unwrap();
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let mut status = Command::new("/usr/bin/xdg-open")
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let mut work = client.get(session_url).and_then(move |res| {
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:149:9
[INFO] [stderr]     |
[INFO] [stderr] 149 |     let mut work = client.request(req).and_then(move |res| {
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:328:13
[INFO] [stderr]     |
[INFO] [stderr] 328 |         let mut params = Vec::new();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ApiCredentials`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub struct ApiCredentials {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `AuthorizedApiCredentials`
[INFO] [stderr]   --> src/rastfm/lastfm_api.rs:37:1
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub struct AuthorizedApiCredentials {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SESSION_KEY_FILE`
[INFO] [stderr]   --> src/rastfm/api.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | const SESSION_KEY_FILE: &str = "session_key";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `API_KEY`
[INFO] [stderr]   --> src/rastfm/api.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | const API_KEY: &str = "";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SHARED_SECRET`
[INFO] [stderr]   --> src/rastfm/api.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | const SHARED_SECRET: &str = "";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `SessionKey`
[INFO] [stderr]   --> src/rastfm/api.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | type SessionKey = String;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ApiCredentials`
[INFO] [stderr]   --> src/rastfm/api.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub struct ApiCredentials {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `AuthorizedApiCredentials`
[INFO] [stderr]   --> src/rastfm/api.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub struct AuthorizedApiCredentials {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `authorize`
[INFO] [stderr]   --> src/rastfm/api.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn authorize(&self) -> Option<AuthorizedApiCredentials> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_session`
[INFO] [stderr]   --> src/rastfm/api.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn get_session(&self) -> Option<SessionKey> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `save_session_key`
[INFO] [stderr]   --> src/rastfm/api.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn save_session_key(session_key: &SessionKey) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load_session_key`
[INFO] [stderr]   --> src/rastfm/api.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn load_session_key() -> Option<SessionKey> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scrobble_tracks`
[INFO] [stderr]   --> src/rastfm/api.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn scrobble_tracks(tracks: &mut Vec<TrackInfo>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `futures::AndThen` that must be used
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:152:13
[INFO] [stderr]     |
[INFO] [stderr] 152 | /             res.body().concat2().and_then(move |body| {
[INFO] [stderr] 153 | |                 let response_json: Value = serde_json::from_slice(&body).expect("from_slice error");
[INFO] [stderr] 154 | |                 println!("Got response: {}", response_json.to_string());
[INFO] [stderr] 155 | |
[INFO] [stderr] 156 | |                 Ok(())
[INFO] [stderr] 157 | |             });
[INFO] [stderr]     | |_______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: futures do nothing unless polled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 | /     File::create(Path::new(SESSION_KEY_FILE))
[INFO] [stderr] 169 | |             .map(|mut file| file.write_all(session_key.as_bytes()));
[INFO] [stderr]     | |____________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:177:5
[INFO] [stderr]     |
[INFO] [stderr] 177 | /     File::open(Path::new(SESSION_KEY_FILE))
[INFO] [stderr] 178 | |             .map(|mut f| f.read_to_string(&mut session_key));
[INFO] [stderr]     | |_____________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/rastfm/lastfm_api.rs:312:9
[INFO] [stderr]     |
[INFO] [stderr] 312 |         remove_file(SESSION_KEY_FILE);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.00s
[INFO] running `"docker" "inspect" "c26fe85a4cf63a87bd4728638836ca7b94777e73efccc53c71bdfc75a755714f"`
[INFO] running `"docker" "rm" "-f" "c26fe85a4cf63a87bd4728638836ca7b94777e73efccc53c71bdfc75a755714f"`
[INFO] [stdout] c26fe85a4cf63a87bd4728638836ca7b94777e73efccc53c71bdfc75a755714f