[INFO] updating cached repository https://github.com/afandian/folktunefinder-abc
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] edf2a0fa212e35e940d2d4d91ae6b66fbeec182b
[INFO] testing afandian/folktunefinder-abc against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fafandian%2Ffolktunefinder-abc" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/afandian/folktunefinder-abc on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/afandian/folktunefinder-abc
[INFO] finished tweaking git repo https://github.com/afandian/folktunefinder-abc
[INFO] tweaked toml for git repo https://github.com/afandian/folktunefinder-abc written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/afandian/folktunefinder-abc already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c083cbb5201e44f7a5d47fa018a741acad7bf9f1ef2b68dab96eb1d174f4551d
[INFO] running `"docker" "start" "-a" "c083cbb5201e44f7a5d47fa018a741acad7bf9f1ef2b68dab96eb1d174f4551d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling num-traits v0.1.42
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling ascii v0.7.1
[INFO] [stderr]    Compiling chunked_transfer v0.3.1
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling unidecode v0.3.0
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-japanese v1.20141219.5
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[INFO] [stderr]    Compiling unicode-bidi v0.3.4
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[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling pest v2.0.2
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling encoding v0.2.33
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling uuid v0.1.18
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling regex v0.2.5
[INFO] [stderr]    Compiling pest_meta v2.0.3
[INFO] [stderr]    Compiling url v0.2.38
[INFO] [stderr]    Compiling num-iter v0.1.34
[INFO] [stderr]    Compiling num v0.1.41
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling chrono v0.2.25
[INFO] [stderr]    Compiling tiny_http v0.5.9
[INFO] [stderr]    Compiling pest_generator v2.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling pest_derive v2.0.1
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling handlebars v1.1.0
[INFO] [stderr]    Compiling folktunefinder-abc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `pitch`
[INFO] [stderr]  --> src/representations.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use pitch;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `relations`
[INFO] [stderr]  --> src/representations.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use relations;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/representations.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stderr]   --> src/representations.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::sync::mpsc::channel;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]   --> src/representations.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::sync::Arc;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]   --> src/representations.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::thread;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `storage`
[INFO] [stderr]   --> src/representations.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use storage;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `abc_lexer as l`
[INFO] [stderr]   --> src/representations.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use abc_lexer as l;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tune_ast_three`
[INFO] [stderr]   --> src/search.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | use tune_ast_three;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]   --> src/search.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 | use std::sync::Arc;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]   --> src/storage.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | use std::sync::Arc;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `max_id`
[INFO] [stderr]    --> src/main.rs:169:9
[INFO] [stderr]     |
[INFO] [stderr] 169 |     let max_id = read_write_abcs.max_id();
[INFO] [stderr]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_id`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tune_cache_path`
[INFO] [stderr]    --> src/main.rs:322:9
[INFO] [stderr]     |
[INFO] [stderr] 322 |     let tune_cache_path = get_tune_cache_path().expect("Base directory config not supplied.");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tune_cache_path`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `key_signature` is assigned to, but never used
[INFO] [stderr]   --> src/pitch.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let mut key_signature = l::T::KeySignature(
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_key_signature` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `key_signature` is never read
[INFO] [stderr]   --> src/pitch.rs:27:21
[INFO] [stderr]    |
[INFO] [stderr] 27 |                     key_signature = l::T::KeySignature(*pitch_class, *mode)
[INFO] [stderr]    |                     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `request`
[INFO] [stderr]    --> src/server.rs:172:5
[INFO] [stderr]     |
[INFO] [stderr] 172 |     request: &Request,
[INFO] [stderr]     |     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_request`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `re_html_tune`
[INFO] [stderr]    --> src/server.rs:243:9
[INFO] [stderr]     |
[INFO] [stderr] 243 |     let re_html_tune = regex::Regex::new(r"/tunes/(\d+)$").unwrap();
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_re_html_tune`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reader`
[INFO] [stderr]    --> src/storage.rs:306:17
[INFO] [stderr]     |
[INFO] [stderr] 306 |             let mut reader = BufReader::new(f);
[INFO] [stderr]     |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `key_signature` is assigned to, but never used
[INFO] [stderr]    --> src/typeset.rs:565:9
[INFO] [stderr]     |
[INFO] [stderr] 565 |     let mut key_signature = l::T::KeySignature(
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_key_signature` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `metre` is assigned to, but never used
[INFO] [stderr]    --> src/typeset.rs:572:9
[INFO] [stderr]     |
[INFO] [stderr] 572 |     let mut metre = music::Metre(4, 4);
[INFO] [stderr]     |         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_metre` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `key_signature` is never read
[INFO] [stderr]    --> src/typeset.rs:580:17
[INFO] [stderr]     |
[INFO] [stderr] 580 |                 key_signature = l::T::KeySignature(*pitch_class, *mode)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `metre` is never read
[INFO] [stderr]    --> src/typeset.rs:582:39
[INFO] [stderr]     |
[INFO] [stderr] 582 |             l::T::Metre(new_metre) => metre = *new_metre,
[INFO] [stderr]     |                                       ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:166:9
[INFO] [stderr]     |
[INFO] [stderr] 166 |     let mut scanner = storage::CacheScanner::new(tune_cache_path.clone());
[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/main.rs:249:9
[INFO] [stderr]     |
[INFO] [stderr] 249 |     let mut searcher_arc = Arc::new(searcher);
[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/search.rs:501:17
[INFO] [stderr]     |
[INFO] [stderr] 501 |             let mut result = DecoratedResult {
[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/server.rs:82:17
[INFO] [stderr]    |
[INFO] [stderr] 82 |             let mut params: Vec<(String, String)> = url.query_pairs().into_owned().collect();
[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/server.rs:139:17
[INFO] [stderr]     |
[INFO] [stderr] 139 |             let mut params: Vec<(String, String)> = url.query_pairs().into_owned().collect();
[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/server.rs:259:9
[INFO] [stderr]     |
[INFO] [stderr] 259 |     let mut server = Server::http(bind).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/storage.rs:180:17
[INFO] [stderr]     |
[INFO] [stderr] 180 |             let mut reader = BufReader::new(f);
[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/storage.rs:210:13
[INFO] [stderr]     |
[INFO] [stderr] 210 |         let mut scanner = CacheScanner::new(self.cache_path.clone());
[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/storage.rs:290:13
[INFO] [stderr]     |
[INFO] [stderr] 290 |         let mut scanner = CacheScanner::new(self.cache_path.clone());
[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/storage.rs:306:17
[INFO] [stderr]     |
[INFO] [stderr] 306 |             let mut reader = BufReader::new(f);
[INFO] [stderr]     |                 ----^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `take`
[INFO] [stderr]    --> src/abc_lexer.rs:145:5
[INFO] [stderr]     |
[INFO] [stderr] 145 |     fn take(&self, n: usize) -> Option<(Context<'a>, &'a [char])> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rest`
[INFO] [stderr]    --> src/abc_lexer.rs:197:5
[INFO] [stderr]     |
[INFO] [stderr] 197 |     fn rest(&self) -> &'a [char] {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DefaultNoteLenth`
[INFO] [stderr]    --> src/abc_lexer.rs:835:5
[INFO] [stderr]     |
[INFO] [stderr] 835 |     DefaultNoteLenth,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NoteDurationDenomenator`
[INFO] [stderr]    --> src/abc_lexer.rs:845:5
[INFO] [stderr]     |
[INFO] [stderr] 845 |     NoteDurationDenomenator,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UnrecognisedRest`
[INFO] [stderr]    --> src/abc_lexer.rs:895:5
[INFO] [stderr]     |
[INFO] [stderr] 895 |     UnrecognisedRest,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ts`
[INFO] [stderr]     --> src/abc_lexer.rs:1133:5
[INFO] [stderr]      |
[INFO] [stderr] 1133 |     fn ts(ctx: Context<'a>, ts: Vec<T>) -> LexResult<'a> {
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string_to_vec`
[INFO] [stderr]  --> src/end_to_end_test.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn string_to_vec(input: String) -> Vec<char> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Natural`
[INFO] [stderr]   --> src/music.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     Natural,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scale_intervals`
[INFO] [stderr]    --> src/music.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn scale_intervals(&self) -> &[u16] {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pitch`
[INFO] [stderr]    --> src/music.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 |     pub fn pitch(&self) -> PitchClass {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `HISTOGRAM_SIZE`
[INFO] [stderr]   --> src/pitch.rs:84:1
[INFO] [stderr]    |
[INFO] [stderr] 84 | const HISTOGRAM_SIZE: usize = 12;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `HISTOGRAM_WIDTH`
[INFO] [stderr]   --> src/pitch.rs:87:1
[INFO] [stderr]    |
[INFO] [stderr] 87 | pub const HISTOGRAM_WIDTH: usize = HISTOGRAM_SIZE + HISTOGRAM_SIZE + 2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `IntervalHistogram`
[INFO] [stderr]   --> src/pitch.rs:89:12
[INFO] [stderr]    |
[INFO] [stderr] 89 | pub struct IntervalHistogram {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_interval_seq`
[INFO] [stderr]   --> src/pitch.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn from_interval_seq(intervals: &IntervalSequence) -> IntervalHistogram {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sim`
[INFO] [stderr]    --> src/pitch.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 |     pub fn sim(&self, other: &IntervalHistogram) -> f32 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `num_groups`
[INFO] [stderr]    --> src/relations.rs:206:5
[INFO] [stderr]     |
[INFO] [stderr] 206 |     pub fn num_groups(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_groups`
[INFO] [stderr]    --> src/relations.rs:242:5
[INFO] [stderr]     |
[INFO] [stderr] 242 |     pub fn get_groups(&self) -> Vec<Vec<usize>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_ungrouped_after`
[INFO] [stderr]    --> src/relations.rs:253:5
[INFO] [stderr]     |
[INFO] [stderr] 253 |     pub fn next_ungrouped_after(&self, a: u32) -> Option<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_debug_tunes`
[INFO] [stderr]    --> src/relations.rs:509:5
[INFO] [stderr]     |
[INFO] [stderr] 509 |     pub fn print_debug_tunes(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `debug_print_features`
[INFO] [stderr]    --> src/relations.rs:600:5
[INFO] [stderr]     |
[INFO] [stderr] 600 |     pub fn debug_print_features(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `THREADS`
[INFO] [stderr]   --> src/representations.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | const THREADS: u32 = 8;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `total`
[INFO] [stderr]   --> src/search.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn total(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_by_id`
[INFO] [stderr]   --> src/storage.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn find_by_id(&self, tune_id: u32) -> Option<CacheEntry> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `point_debug`
[INFO] [stderr]    --> src/svg.rs:139:5
[INFO] [stderr]     |
[INFO] [stderr] 139 |     pub fn point_debug(&mut self, x: f32, y: f32, w: f32, h: f32) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Typesetting`
[INFO] [stderr]   --> src/typeset.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub struct Typesetting {}
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/typeset.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn new() -> Typesetting {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 58 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 05s
[INFO] running `"docker" "inspect" "c083cbb5201e44f7a5d47fa018a741acad7bf9f1ef2b68dab96eb1d174f4551d"`
[INFO] running `"docker" "rm" "-f" "c083cbb5201e44f7a5d47fa018a741acad7bf9f1ef2b68dab96eb1d174f4551d"`
[INFO] [stdout] c083cbb5201e44f7a5d47fa018a741acad7bf9f1ef2b68dab96eb1d174f4551d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 44b45667826fa77454bb7ab49ac923af73286a09e675e3d0eeb3fc24611cb22d
[INFO] running `"docker" "start" "-a" "44b45667826fa77454bb7ab49ac923af73286a09e675e3d0eeb3fc24611cb22d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling folktunefinder-abc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0425]: cannot find function `ast_to_pitches` in module `representations`
[INFO] [stderr]   --> src/end_to_end_test.rs:11:26
[INFO] [stderr]    |
[INFO] [stderr] 11 |         representations::ast_to_pitches(&representations::abc_to_ast(
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^ not found in `representations`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `ast_to_pitches` in module `representations`
[INFO] [stderr]   --> src/end_to_end_test.rs:19:26
[INFO] [stderr]    |
[INFO] [stderr] 19 |         representations::ast_to_pitches(&representations::abc_to_ast(
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^ not found in `representations`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `ast_to_pitches` in module `representations`
[INFO] [stderr]   --> src/end_to_end_test.rs:30:26
[INFO] [stderr]    |
[INFO] [stderr] 30 |         representations::ast_to_pitches(&representations::abc_to_ast(
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^ not found in `representations`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `pitch`
[INFO] [stderr]  --> src/representations.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use pitch;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `relations`
[INFO] [stderr]  --> src/representations.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use relations;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/representations.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stderr]   --> src/representations.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::sync::mpsc::channel;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]   --> src/representations.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::sync::Arc;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]   --> src/representations.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::thread;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `storage`
[INFO] [stderr]   --> src/representations.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use storage;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `abc_lexer as l`
[INFO] [stderr]   --> src/representations.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use abc_lexer as l;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tune_ast_three`
[INFO] [stderr]   --> src/search.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | use tune_ast_three;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]   --> src/search.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 | use std::sync::Arc;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]   --> src/storage.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | use std::sync::Arc;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors; 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `folktunefinder-abc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "44b45667826fa77454bb7ab49ac923af73286a09e675e3d0eeb3fc24611cb22d"`
[INFO] running `"docker" "rm" "-f" "44b45667826fa77454bb7ab49ac923af73286a09e675e3d0eeb3fc24611cb22d"`
[INFO] [stdout] 44b45667826fa77454bb7ab49ac923af73286a09e675e3d0eeb3fc24611cb22d