[INFO] updating cached repository samrayleung/rspotify
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/samrayleung/rspotify
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/samrayleung/rspotify" "work/ex/beta-1.38-1/sources/1.37.0/gh/samrayleung/rspotify"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/samrayleung/rspotify'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/samrayleung/rspotify" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/samrayleung/rspotify"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/samrayleung/rspotify'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] df0437a2e2d0c6590ef6af3c625eea8155573dde
[INFO] sha for GitHub repo samrayleung/rspotify: df0437a2e2d0c6590ef6af3c625eea8155573dde
[INFO] validating manifest of samrayleung/rspotify 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 samrayleung/rspotify 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 samrayleung/rspotify
[INFO] finished frobbing samrayleung/rspotify
[INFO] frobbed toml for samrayleung/rspotify written to work/ex/beta-1.38-1/sources/1.37.0/gh/samrayleung/rspotify/Cargo.toml
[INFO] started frobbing samrayleung/rspotify
[INFO] finished frobbing samrayleung/rspotify
[INFO] frobbed toml for samrayleung/rspotify written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/samrayleung/rspotify/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 samrayleung/rspotify 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-0/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/samrayleung/rspotify:/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] 3a1adf62efa91b9242b2f9b48d7caa78b5d78f84902f820db05a92bfe298f1d0
[INFO] running `"docker" "start" "-a" "3a1adf62efa91b9242b2f9b48d7caa78b5d78f84902f820db05a92bfe298f1d0"`
[INFO] [stderr]    Compiling random v0.12.2
[INFO] [stderr]    Compiling webbrowser v0.5.1
[INFO] [stderr]    Compiling darling_core v0.9.0
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling cookie_store v0.7.0
[INFO] [stderr]    Compiling dotenv v0.13.0
[INFO] [stderr]    Compiling reqwest v0.9.19
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]    Compiling darling v0.9.0
[INFO] [stderr]    Compiling derive_builder_core v0.5.0
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]    Compiling rspotify v0.5.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spotify/client.rs:140:17
[INFO] [stderr]     |
[INFO] [stderr] 140 |             let mut builder = CLIENT
[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 44.85s
[INFO] running `"docker" "inspect" "3a1adf62efa91b9242b2f9b48d7caa78b5d78f84902f820db05a92bfe298f1d0"`
[INFO] running `"docker" "rm" "-f" "3a1adf62efa91b9242b2f9b48d7caa78b5d78f84902f820db05a92bfe298f1d0"`
[INFO] [stdout] 3a1adf62efa91b9242b2f9b48d7caa78b5d78f84902f820db05a92bfe298f1d0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/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/samrayleung/rspotify:/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] 6542c05d195a6e13f4feb64fd84b713a4887ffeab82630c4b93d9a7f1085363b
[INFO] running `"docker" "start" "-a" "6542c05d195a6e13f4feb64fd84b713a4887ffeab82630c4b93d9a7f1085363b"`
[INFO] [stderr]    Compiling rspotify v0.5.0 (/opt/crater/workdir)
[INFO] [stderr] error: Could not compile `rspotify`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name search_album examples/search_album.rs --color never --crate-type bin --emit=dep-info,link -C debuginfo=2 -C metadata=8a94c50069739e8e -C extra-filename=-8a94c50069739e8e --out-dir /opt/crater/target/debug/examples -L dependency=/opt/crater/target/debug/deps --extern base64=/opt/crater/target/debug/deps/libbase64-ecbe49359e7e13a6.rlib --extern chrono=/opt/crater/target/debug/deps/libchrono-5f6ec2e99a7d2626.rlib --extern derive_builder=/opt/crater/target/debug/deps/libderive_builder-1a58a9dab44e386f.so --extern dotenv=/opt/crater/target/debug/deps/libdotenv-cca14092e5f46352.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-60ee7903c4014a8e.rlib --extern failure=/opt/crater/target/debug/deps/libfailure-d25add3dfb0a30d5.rlib --extern itertools=/opt/crater/target/debug/deps/libitertools-9dd23d04e7f30d9f.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-1f7a4359e40a6da9.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern percent_encoding=/opt/crater/target/debug/deps/libpercent_encoding-b2b1eddedcc9d5cc.rlib --extern rand=/opt/crater/target/debug/deps/librand-32f57094744e8e3d.rlib --extern random=/opt/crater/target/debug/deps/librandom-dd71b5d90f9c1352.rlib --extern reqwest=/opt/crater/target/debug/deps/libreqwest-ec361bb3f8f7aba4.rlib --extern rspotify=/opt/crater/target/debug/deps/librspotify-88270299701bd2d4.rlib --extern serde=/opt/crater/target/debug/deps/libserde-50e5d46514dccf4f.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern serde_json=/opt/crater/target/debug/deps/libserde_json-5e1c62a001e50ba1.rlib --extern url=/opt/crater/target/debug/deps/liburl-ee604ccef16e6499.rlib --extern webbrowser=/opt/crater/target/debug/deps/libwebbrowser-4698213478c7af13.rlib --cap-lints=warn -L native=/opt/crater/target/debug/build/backtrace-sys-d5ae900bfde9750d/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `rspotify`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name user_playlist_create examples/user_playlist_create.rs --color never --crate-type bin --emit=dep-info,link -C debuginfo=2 -C metadata=1e1807f2997072a3 -C extra-filename=-1e1807f2997072a3 --out-dir /opt/crater/target/debug/examples -L dependency=/opt/crater/target/debug/deps --extern base64=/opt/crater/target/debug/deps/libbase64-ecbe49359e7e13a6.rlib --extern chrono=/opt/crater/target/debug/deps/libchrono-5f6ec2e99a7d2626.rlib --extern derive_builder=/opt/crater/target/debug/deps/libderive_builder-1a58a9dab44e386f.so --extern dotenv=/opt/crater/target/debug/deps/libdotenv-cca14092e5f46352.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-60ee7903c4014a8e.rlib --extern failure=/opt/crater/target/debug/deps/libfailure-d25add3dfb0a30d5.rlib --extern itertools=/opt/crater/target/debug/deps/libitertools-9dd23d04e7f30d9f.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-1f7a4359e40a6da9.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern percent_encoding=/opt/crater/target/debug/deps/libpercent_encoding-b2b1eddedcc9d5cc.rlib --extern rand=/opt/crater/target/debug/deps/librand-32f57094744e8e3d.rlib --extern random=/opt/crater/target/debug/deps/librandom-dd71b5d90f9c1352.rlib --extern reqwest=/opt/crater/target/debug/deps/libreqwest-ec361bb3f8f7aba4.rlib --extern rspotify=/opt/crater/target/debug/deps/librspotify-88270299701bd2d4.rlib --extern serde=/opt/crater/target/debug/deps/libserde-50e5d46514dccf4f.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern serde_json=/opt/crater/target/debug/deps/libserde_json-5e1c62a001e50ba1.rlib --extern url=/opt/crater/target/debug/deps/liburl-ee604ccef16e6499.rlib --extern webbrowser=/opt/crater/target/debug/deps/libwebbrowser-4698213478c7af13.rlib --cap-lints=warn -L native=/opt/crater/target/debug/build/backtrace-sys-d5ae900bfde9750d/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `rspotify`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name user_playlist_add_tracks examples/user_playlist_add_tracks.rs --color never --crate-type bin --emit=dep-info,link -C debuginfo=2 -C metadata=da6fe4d22d7bbb1d -C extra-filename=-da6fe4d22d7bbb1d --out-dir /opt/crater/target/debug/examples -L dependency=/opt/crater/target/debug/deps --extern base64=/opt/crater/target/debug/deps/libbase64-ecbe49359e7e13a6.rlib --extern chrono=/opt/crater/target/debug/deps/libchrono-5f6ec2e99a7d2626.rlib --extern derive_builder=/opt/crater/target/debug/deps/libderive_builder-1a58a9dab44e386f.so --extern dotenv=/opt/crater/target/debug/deps/libdotenv-cca14092e5f46352.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-60ee7903c4014a8e.rlib --extern failure=/opt/crater/target/debug/deps/libfailure-d25add3dfb0a30d5.rlib --extern itertools=/opt/crater/target/debug/deps/libitertools-9dd23d04e7f30d9f.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-1f7a4359e40a6da9.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern percent_encoding=/opt/crater/target/debug/deps/libpercent_encoding-b2b1eddedcc9d5cc.rlib --extern rand=/opt/crater/target/debug/deps/librand-32f57094744e8e3d.rlib --extern random=/opt/crater/target/debug/deps/librandom-dd71b5d90f9c1352.rlib --extern reqwest=/opt/crater/target/debug/deps/libreqwest-ec361bb3f8f7aba4.rlib --extern rspotify=/opt/crater/target/debug/deps/librspotify-88270299701bd2d4.rlib --extern serde=/opt/crater/target/debug/deps/libserde-50e5d46514dccf4f.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern serde_json=/opt/crater/target/debug/deps/libserde_json-5e1c62a001e50ba1.rlib --extern url=/opt/crater/target/debug/deps/liburl-ee604ccef16e6499.rlib --extern webbrowser=/opt/crater/target/debug/deps/libwebbrowser-4698213478c7af13.rlib --cap-lints=warn -L native=/opt/crater/target/debug/build/backtrace-sys-d5ae900bfde9750d/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `rspotify`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name artist_top_tracks examples/artist_top_tracks.rs --color never --crate-type bin --emit=dep-info,link -C debuginfo=2 -C metadata=954a93de20913ae7 -C extra-filename=-954a93de20913ae7 --out-dir /opt/crater/target/debug/examples -L dependency=/opt/crater/target/debug/deps --extern base64=/opt/crater/target/debug/deps/libbase64-ecbe49359e7e13a6.rlib --extern chrono=/opt/crater/target/debug/deps/libchrono-5f6ec2e99a7d2626.rlib --extern derive_builder=/opt/crater/target/debug/deps/libderive_builder-1a58a9dab44e386f.so --extern dotenv=/opt/crater/target/debug/deps/libdotenv-cca14092e5f46352.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-60ee7903c4014a8e.rlib --extern failure=/opt/crater/target/debug/deps/libfailure-d25add3dfb0a30d5.rlib --extern itertools=/opt/crater/target/debug/deps/libitertools-9dd23d04e7f30d9f.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-1f7a4359e40a6da9.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern percent_encoding=/opt/crater/target/debug/deps/libpercent_encoding-b2b1eddedcc9d5cc.rlib --extern rand=/opt/crater/target/debug/deps/librand-32f57094744e8e3d.rlib --extern random=/opt/crater/target/debug/deps/librandom-dd71b5d90f9c1352.rlib --extern reqwest=/opt/crater/target/debug/deps/libreqwest-ec361bb3f8f7aba4.rlib --extern rspotify=/opt/crater/target/debug/deps/librspotify-88270299701bd2d4.rlib --extern serde=/opt/crater/target/debug/deps/libserde-50e5d46514dccf4f.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern serde_json=/opt/crater/target/debug/deps/libserde_json-5e1c62a001e50ba1.rlib --extern url=/opt/crater/target/debug/deps/liburl-ee604ccef16e6499.rlib --extern webbrowser=/opt/crater/target/debug/deps/libwebbrowser-4698213478c7af13.rlib --cap-lints=warn -L native=/opt/crater/target/debug/build/backtrace-sys-d5ae900bfde9750d/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `rspotify`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name user_playlist_follow_playlist examples/user_playlist_follow_playlist.rs --color never --crate-type bin --emit=dep-info,link -C debuginfo=2 -C metadata=235bf69f2dc9c644 -C extra-filename=-235bf69f2dc9c644 --out-dir /opt/crater/target/debug/examples -L dependency=/opt/crater/target/debug/deps --extern base64=/opt/crater/target/debug/deps/libbase64-ecbe49359e7e13a6.rlib --extern chrono=/opt/crater/target/debug/deps/libchrono-5f6ec2e99a7d2626.rlib --extern derive_builder=/opt/crater/target/debug/deps/libderive_builder-1a58a9dab44e386f.so --extern dotenv=/opt/crater/target/debug/deps/libdotenv-cca14092e5f46352.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-60ee7903c4014a8e.rlib --extern failure=/opt/crater/target/debug/deps/libfailure-d25add3dfb0a30d5.rlib --extern itertools=/opt/crater/target/debug/deps/libitertools-9dd23d04e7f30d9f.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-1f7a4359e40a6da9.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern percent_encoding=/opt/crater/target/debug/deps/libpercent_encoding-b2b1eddedcc9d5cc.rlib --extern rand=/opt/crater/target/debug/deps/librand-32f57094744e8e3d.rlib --extern random=/opt/crater/target/debug/deps/librandom-dd71b5d90f9c1352.rlib --extern reqwest=/opt/crater/target/debug/deps/libreqwest-ec361bb3f8f7aba4.rlib --extern rspotify=/opt/crater/target/debug/deps/librspotify-88270299701bd2d4.rlib --extern serde=/opt/crater/target/debug/deps/libserde-50e5d46514dccf4f.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern serde_json=/opt/crater/target/debug/deps/libserde_json-5e1c62a001e50ba1.rlib --extern url=/opt/crater/target/debug/deps/liburl-ee604ccef16e6499.rlib --extern webbrowser=/opt/crater/target/debug/deps/libwebbrowser-4698213478c7af13.rlib --cap-lints=warn -L native=/opt/crater/target/debug/build/backtrace-sys-d5ae900bfde9750d/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `rspotify`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name pause_playback examples/pause_playback.rs --color never --crate-type bin --emit=dep-info,link -C debuginfo=2 -C metadata=4108f5351cd8b89e -C extra-filename=-4108f5351cd8b89e --out-dir /opt/crater/target/debug/examples -L dependency=/opt/crater/target/debug/deps --extern base64=/opt/crater/target/debug/deps/libbase64-ecbe49359e7e13a6.rlib --extern chrono=/opt/crater/target/debug/deps/libchrono-5f6ec2e99a7d2626.rlib --extern derive_builder=/opt/crater/target/debug/deps/libderive_builder-1a58a9dab44e386f.so --extern dotenv=/opt/crater/target/debug/deps/libdotenv-cca14092e5f46352.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-60ee7903c4014a8e.rlib --extern failure=/opt/crater/target/debug/deps/libfailure-d25add3dfb0a30d5.rlib --extern itertools=/opt/crater/target/debug/deps/libitertools-9dd23d04e7f30d9f.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-1f7a4359e40a6da9.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern percent_encoding=/opt/crater/target/debug/deps/libpercent_encoding-b2b1eddedcc9d5cc.rlib --extern rand=/opt/crater/target/debug/deps/librand-32f57094744e8e3d.rlib --extern random=/opt/crater/target/debug/deps/librandom-dd71b5d90f9c1352.rlib --extern reqwest=/opt/crater/target/debug/deps/libreqwest-ec361bb3f8f7aba4.rlib --extern rspotify=/opt/crater/target/debug/deps/librspotify-88270299701bd2d4.rlib --extern serde=/opt/crater/target/debug/deps/libserde-50e5d46514dccf4f.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern serde_json=/opt/crater/target/debug/deps/libserde_json-5e1c62a001e50ba1.rlib --extern url=/opt/crater/target/debug/deps/liburl-ee604ccef16e6499.rlib --extern webbrowser=/opt/crater/target/debug/deps/libwebbrowser-4698213478c7af13.rlib --cap-lints=warn -L native=/opt/crater/target/debug/build/backtrace-sys-d5ae900bfde9750d/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `rspotify`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name repeat examples/repeat.rs --color never --crate-type bin --emit=dep-info,link -C debuginfo=2 -C metadata=26cf0c8e6c694633 -C extra-filename=-26cf0c8e6c694633 --out-dir /opt/crater/target/debug/examples -L dependency=/opt/crater/target/debug/deps --extern base64=/opt/crater/target/debug/deps/libbase64-ecbe49359e7e13a6.rlib --extern chrono=/opt/crater/target/debug/deps/libchrono-5f6ec2e99a7d2626.rlib --extern derive_builder=/opt/crater/target/debug/deps/libderive_builder-1a58a9dab44e386f.so --extern dotenv=/opt/crater/target/debug/deps/libdotenv-cca14092e5f46352.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-60ee7903c4014a8e.rlib --extern failure=/opt/crater/target/debug/deps/libfailure-d25add3dfb0a30d5.rlib --extern itertools=/opt/crater/target/debug/deps/libitertools-9dd23d04e7f30d9f.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-1f7a4359e40a6da9.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern percent_encoding=/opt/crater/target/debug/deps/libpercent_encoding-b2b1eddedcc9d5cc.rlib --extern rand=/opt/crater/target/debug/deps/librand-32f57094744e8e3d.rlib --extern random=/opt/crater/target/debug/deps/librandom-dd71b5d90f9c1352.rlib --extern reqwest=/opt/crater/target/debug/deps/libreqwest-ec361bb3f8f7aba4.rlib --extern rspotify=/opt/crater/target/debug/deps/librspotify-88270299701bd2d4.rlib --extern serde=/opt/crater/target/debug/deps/libserde-50e5d46514dccf4f.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern serde_json=/opt/crater/target/debug/deps/libserde_json-5e1c62a001e50ba1.rlib --extern url=/opt/crater/target/debug/deps/liburl-ee604ccef16e6499.rlib --extern webbrowser=/opt/crater/target/debug/deps/libwebbrowser-4698213478c7af13.rlib --cap-lints=warn -L native=/opt/crater/target/debug/build/backtrace-sys-d5ae900bfde9750d/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `rspotify`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name rspotify src/lib.rs --color never --emit=dep-info,link -C debuginfo=2 --test -C metadata=a74471bd8af0b399 -C extra-filename=-a74471bd8af0b399 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern base64=/opt/crater/target/debug/deps/libbase64-ecbe49359e7e13a6.rlib --extern chrono=/opt/crater/target/debug/deps/libchrono-5f6ec2e99a7d2626.rlib --extern derive_builder=/opt/crater/target/debug/deps/libderive_builder-1a58a9dab44e386f.so --extern dotenv=/opt/crater/target/debug/deps/libdotenv-cca14092e5f46352.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-60ee7903c4014a8e.rlib --extern failure=/opt/crater/target/debug/deps/libfailure-d25add3dfb0a30d5.rlib --extern itertools=/opt/crater/target/debug/deps/libitertools-9dd23d04e7f30d9f.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-1f7a4359e40a6da9.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern percent_encoding=/opt/crater/target/debug/deps/libpercent_encoding-b2b1eddedcc9d5cc.rlib --extern rand=/opt/crater/target/debug/deps/librand-32f57094744e8e3d.rlib --extern random=/opt/crater/target/debug/deps/librandom-dd71b5d90f9c1352.rlib --extern reqwest=/opt/crater/target/debug/deps/libreqwest-ec361bb3f8f7aba4.rlib --extern serde=/opt/crater/target/debug/deps/libserde-50e5d46514dccf4f.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern serde_json=/opt/crater/target/debug/deps/libserde_json-5e1c62a001e50ba1.rlib --extern url=/opt/crater/target/debug/deps/liburl-ee604ccef16e6499.rlib --extern webbrowser=/opt/crater/target/debug/deps/libwebbrowser-4698213478c7af13.rlib --cap-lints=warn -L native=/opt/crater/target/debug/build/backtrace-sys-d5ae900bfde9750d/out` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "6542c05d195a6e13f4feb64fd84b713a4887ffeab82630c4b93d9a7f1085363b"`
[INFO] running `"docker" "rm" "-f" "6542c05d195a6e13f4feb64fd84b713a4887ffeab82630c4b93d9a7f1085363b"`
[INFO] [stdout] 6542c05d195a6e13f4feb64fd84b713a4887ffeab82630c4b93d9a7f1085363b