[INFO] updating cached repository philippguertler/volumectl
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/philippguertler/volumectl
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/philippguertler/volumectl" "work/ex/beta-1.38-1/sources/1.37.0/gh/philippguertler/volumectl"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/philippguertler/volumectl'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/philippguertler/volumectl" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/philippguertler/volumectl"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/philippguertler/volumectl'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 479dc6865faf2d1f901589e47fda42400ffed12f
[INFO] sha for GitHub repo philippguertler/volumectl: 479dc6865faf2d1f901589e47fda42400ffed12f
[INFO] validating manifest of philippguertler/volumectl 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 philippguertler/volumectl 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 philippguertler/volumectl
[INFO] finished frobbing philippguertler/volumectl
[INFO] frobbed toml for philippguertler/volumectl written to work/ex/beta-1.38-1/sources/1.37.0/gh/philippguertler/volumectl/Cargo.toml
[INFO] started frobbing philippguertler/volumectl
[INFO] finished frobbing philippguertler/volumectl
[INFO] frobbed toml for philippguertler/volumectl written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/philippguertler/volumectl/Cargo.toml
[INFO] crate philippguertler/volumectl 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 philippguertler/volumectl 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-3/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/philippguertler/volumectl:/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] c946c2f3983ad0363dca9dd27d28d908e04cd1aa2ca3add12baad6495ad48bbb
[INFO] running `"docker" "start" "-a" "c946c2f3983ad0363dca9dd27d28d908e04cd1aa2ca3add12baad6495ad48bbb"`
[INFO] [stderr]    Compiling libpulse-sys v1.5.0
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling libpulse-binding v2.6.0
[INFO] [stderr]    Compiling volumectl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/audio.rs:26:68
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn set_volume(rules: Vec<Rule>, volume: f64) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rule.rs:20:20
[INFO] [stderr]    |
[INFO] [stderr] 20 |     type Err = Box<Error>;
[INFO] [stderr]    |                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/rule.rs:37:46
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub fn read_rules() -> Result<Vec<Rule>, Box<Error>> {
[INFO] [stderr]    |                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:18:28
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn run() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] error[E0283]: type annotations required: cannot resolve `str: std::convert::AsRef<_>`
[INFO] [stderr]   --> src/rule.rs:38:20
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let mut path = require_with!(dirs::config_dir(), "Could not find config dir");
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: Could not compile `volumectl`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c946c2f3983ad0363dca9dd27d28d908e04cd1aa2ca3add12baad6495ad48bbb"`
[INFO] running `"docker" "rm" "-f" "c946c2f3983ad0363dca9dd27d28d908e04cd1aa2ca3add12baad6495ad48bbb"`
[INFO] [stdout] c946c2f3983ad0363dca9dd27d28d908e04cd1aa2ca3add12baad6495ad48bbb