[INFO] updating cached repository der-On/Children-Audio-Library
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/der-On/Children-Audio-Library
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/der-On/Children-Audio-Library" "work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/der-On/Children-Audio-Library"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/der-On/Children-Audio-Library'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/der-On/Children-Audio-Library" "work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/der-On/Children-Audio-Library"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/der-On/Children-Audio-Library'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c8cf2ff75c6f7d8ba46929e7b3aed891debe255d
[INFO] sha for GitHub repo der-On/Children-Audio-Library: c8cf2ff75c6f7d8ba46929e7b3aed891debe255d
[INFO] validating manifest of der-On/Children-Audio-Library on toolchain master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of der-On/Children-Audio-Library on toolchain try#29640c57b5f92febba0e40c50cb863c9a7ede51d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing der-On/Children-Audio-Library
[INFO] finished frobbing der-On/Children-Audio-Library
[INFO] frobbed toml for der-On/Children-Audio-Library written to work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/der-On/Children-Audio-Library/Cargo.toml
[INFO] started frobbing der-On/Children-Audio-Library
[INFO] finished frobbing der-On/Children-Audio-Library
[INFO] frobbed toml for der-On/Children-Audio-Library written to work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/der-On/Children-Audio-Library/Cargo.toml
[INFO] crate der-On/Children-Audio-Library has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking der-On/Children-Audio-Library against master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039 for pr-57745
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57745/worker-4/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/der-On/Children-Audio-Library:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bd472cd20bcd3b47b0a9eea7a5d5035c5255905ccedc6799909191c19d5ae208
[INFO] running `"docker" "start" "-a" "bd472cd20bcd3b47b0a9eea7a5d5035c5255905ccedc6799909191c19d5ae208"`
[INFO] [stderr]    Compiling serde_derive v1.0.55
[INFO] [stderr]     Checking chrono v0.4.2
[INFO] [stderr]     Checking hyper v0.11.26
[INFO] [stderr]     Checking hyper-staticfile v0.2.0
[INFO] [stderr]     Checking children-audio-library v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]    --> src/library.rs:143:14
[INFO] [stderr]     |
[INFO] [stderr] 143 | fn file_size(file: &File) {
[INFO] [stderr]     |              ^^^^ help: consider using `_file` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]    --> src/library.rs:143:14
[INFO] [stderr]     |
[INFO] [stderr] 143 | fn file_size(file: &File) {
[INFO] [stderr]     |              ^^^^ help: consider using `_file` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `file_size`
[INFO] [stderr]    --> src/library.rs:143:1
[INFO] [stderr]     |
[INFO] [stderr] 143 | fn file_size(file: &File) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_album_cover`
[INFO] [stderr]    --> src/library.rs:170:1
[INFO] [stderr]     |
[INFO] [stderr] 170 | fn is_album_cover(path: &Path) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `lastFmApiKey` should have a snake case name
[INFO] [stderr]   --> src/config.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub lastFmApiKey: String,
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: convert the identifier to snake case: `last_fm_api_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `discogsConsumerKey` should have a snake case name
[INFO] [stderr]   --> src/config.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub discogsConsumerKey: String,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `discogs_consumer_key`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `discogsConsumerSecret` should have a snake case name
[INFO] [stderr]   --> src/config.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub discogsConsumerSecret: String,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `discogs_consumer_secret`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `bluetoothSpeaker` should have a snake case name
[INFO] [stderr]   --> src/config.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub bluetoothSpeaker: String
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `bluetooth_speaker`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `updatedAt` should have a snake case name
[INFO] [stderr]   --> src/library.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub updatedAt: String,
[INFO] [stderr]    |         ^^^^^^^^^ help: convert the identifier to snake case: `updated_at`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `file_size`
[INFO] [stderr]    --> src/library.rs:143:1
[INFO] [stderr]     |
[INFO] [stderr] 143 | fn file_size(file: &File) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_album_cover`
[INFO] [stderr]    --> src/library.rs:170:1
[INFO] [stderr]     |
[INFO] [stderr] 170 | fn is_album_cover(path: &Path) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `lastFmApiKey` should have a snake case name
[INFO] [stderr]   --> src/config.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub lastFmApiKey: String,
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: convert the identifier to snake case: `last_fm_api_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `discogsConsumerKey` should have a snake case name
[INFO] [stderr]   --> src/config.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub discogsConsumerKey: String,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `discogs_consumer_key`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `discogsConsumerSecret` should have a snake case name
[INFO] [stderr]   --> src/config.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub discogsConsumerSecret: String,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `discogs_consumer_secret`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `bluetoothSpeaker` should have a snake case name
[INFO] [stderr]   --> src/config.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub bluetoothSpeaker: String
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `bluetooth_speaker`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `updatedAt` should have a snake case name
[INFO] [stderr]   --> src/library.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub updatedAt: String,
[INFO] [stderr]    |         ^^^^^^^^^ help: convert the identifier to snake case: `updated_at`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/bin/cli.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/bin/cli.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/cli.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     serde_json::to_writer_pretty(file, &_library);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[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/bin/cli.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     serde_json::to_writer_pretty(file, &_library);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[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 22.92s
[INFO] running `"docker" "inspect" "bd472cd20bcd3b47b0a9eea7a5d5035c5255905ccedc6799909191c19d5ae208"`
[INFO] running `"docker" "rm" "-f" "bd472cd20bcd3b47b0a9eea7a5d5035c5255905ccedc6799909191c19d5ae208"`
[INFO] [stdout] bd472cd20bcd3b47b0a9eea7a5d5035c5255905ccedc6799909191c19d5ae208