[INFO] updating cached repository Fuzen-py/Melody
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Fuzen-py/Melody
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Fuzen-py/Melody" "work/ex/beta-1.38-1/sources/1.37.0/gh/Fuzen-py/Melody"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Fuzen-py/Melody'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Fuzen-py/Melody" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Fuzen-py/Melody"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Fuzen-py/Melody'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c1fd14def0804585c06c8785f01f49a3d4652274
[INFO] sha for GitHub repo Fuzen-py/Melody: c1fd14def0804585c06c8785f01f49a3d4652274
[INFO] validating manifest of Fuzen-py/Melody on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Fuzen-py/Melody on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Fuzen-py/Melody
[INFO] finished frobbing Fuzen-py/Melody
[INFO] frobbed toml for Fuzen-py/Melody written to work/ex/beta-1.38-1/sources/1.37.0/gh/Fuzen-py/Melody/Cargo.toml
[INFO] started frobbing Fuzen-py/Melody
[INFO] finished frobbing Fuzen-py/Melody
[INFO] frobbed toml for Fuzen-py/Melody written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Fuzen-py/Melody/Cargo.toml
[INFO] crate Fuzen-py/Melody already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Fuzen-py/Melody against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Fuzen-py/Melody:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] ea074a76cc97604e6852efd859168e104a7d4fb0a98eb88bab47af246baf2179
[INFO] running `"docker" "start" "-a" "ea074a76cc97604e6852efd859168e104a7d4fb0a98eb88bab47af246baf2179"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling utf8-ranges v1.0.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling approx v0.1.1
[INFO] [stderr]    Compiling claxon v0.3.2
[INFO] [stderr]    Compiling hound v3.4.0
[INFO] [stderr]    Compiling termcolor v0.3.6
[INFO] [stderr]    Compiling same-file v1.0.3
[INFO] [stderr]    Compiling mp3-metadata v0.3.0
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling termios v0.3.1
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling slice-deque v0.1.14
[INFO] [stderr]    Compiling directories v1.0.2
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling regex-syntax v0.6.2
[INFO] [stderr]    Compiling clicolors-control v0.2.0
[INFO] [stderr]    Compiling ogg v0.7.0
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling tabwriter v1.1.0
[INFO] [stderr]    Compiling walkdir v2.2.5
[INFO] [stderr]    Compiling lock_api v0.1.4
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling lewton v0.9.3
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling minimp3-sys v0.3.0
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling cgmath v0.14.1
[INFO] [stderr]    Compiling cpal v0.8.2
[INFO] [stderr]    Compiling aho-corasick v0.6.8
[INFO] [stderr]    Compiling syn v0.15.15
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling minimp3 v0.3.0
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling os_type v2.2.0
[INFO] [stderr]    Compiling console v0.6.2
[INFO] [stderr]    Compiling rodio v0.8.1
[INFO] [stderr]    Compiling indicatif v0.9.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling toml v0.4.8
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling human-panic v1.0.1
[INFO] [stderr]    Compiling melody v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `mp3_metadata` is imported redundantly
[INFO] [stderr]   --> src/song.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |         use mp3_metadata;
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/lib.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | extern crate mp3_metadata;
[INFO] [stderr]    | -------------------------- the item `mp3_metadata` is already imported here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/utils.rs:191:13
[INFO] [stderr]     |
[INFO] [stderr] 191 |         let mut tracks = pl.tracks;
[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: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> bin/melody/config.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         ::std::fs::create_dir_all(&config_file).is_ok(); // Result doesnt matter
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 11s
[INFO] running `"docker" "inspect" "ea074a76cc97604e6852efd859168e104a7d4fb0a98eb88bab47af246baf2179"`
[INFO] running `"docker" "rm" "-f" "ea074a76cc97604e6852efd859168e104a7d4fb0a98eb88bab47af246baf2179"`
[INFO] [stdout] ea074a76cc97604e6852efd859168e104a7d4fb0a98eb88bab47af246baf2179
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Fuzen-py/Melody:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 738bf0017fa566d36d7b16bf9c884c70051a4bd1d00a69b0fff7c826ad7a3743
[INFO] running `"docker" "start" "-a" "738bf0017fa566d36d7b16bf9c884c70051a4bd1d00a69b0fff7c826ad7a3743"`
[INFO] [stderr]    Compiling melody v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `mp3_metadata` is imported redundantly
[INFO] [stderr]   --> src/song.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |         use mp3_metadata;
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/lib.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | extern crate mp3_metadata;
[INFO] [stderr]    | -------------------------- the item `mp3_metadata` is already imported here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> bin/melody/config.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         ::std::fs::create_dir_all(&config_file).is_ok(); // Result doesnt matter
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/utils.rs:191:13
[INFO] [stderr]     |
[INFO] [stderr] 191 |         let mut tracks = pl.tracks;
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `"docker" "inspect" "738bf0017fa566d36d7b16bf9c884c70051a4bd1d00a69b0fff7c826ad7a3743"`
[INFO] running `"docker" "rm" "-f" "738bf0017fa566d36d7b16bf9c884c70051a4bd1d00a69b0fff7c826ad7a3743"`
[INFO] [stdout] 738bf0017fa566d36d7b16bf9c884c70051a4bd1d00a69b0fff7c826ad7a3743
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Fuzen-py/Melody:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 2aa0c4b12522fe20808d6475a662728483b9752405281f7feb8e1e47717fbe66
[INFO] running `"docker" "start" "-a" "2aa0c4b12522fe20808d6475a662728483b9752405281f7feb8e1e47717fbe66"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/melody-ebfcafac11426ada
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/melody-8609c8f4224147a1
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests melody
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/errors.rs - errors::MelodyErrors (line 30) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2aa0c4b12522fe20808d6475a662728483b9752405281f7feb8e1e47717fbe66"`
[INFO] running `"docker" "rm" "-f" "2aa0c4b12522fe20808d6475a662728483b9752405281f7feb8e1e47717fbe66"`
[INFO] [stdout] 2aa0c4b12522fe20808d6475a662728483b9752405281f7feb8e1e47717fbe66