[INFO] updating cached repository JoNil/serious_synth_thing
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/JoNil/serious_synth_thing
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/JoNil/serious_synth_thing" "work/ex/beta-1.38-1/sources/1.37.0/gh/JoNil/serious_synth_thing"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/JoNil/serious_synth_thing'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/JoNil/serious_synth_thing" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JoNil/serious_synth_thing"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JoNil/serious_synth_thing'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a5edf7c4e0959f15c38079f187645afee210bd0c
[INFO] sha for GitHub repo JoNil/serious_synth_thing: a5edf7c4e0959f15c38079f187645afee210bd0c
[INFO] validating manifest of JoNil/serious_synth_thing 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 JoNil/serious_synth_thing 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 JoNil/serious_synth_thing
[INFO] finished frobbing JoNil/serious_synth_thing
[INFO] frobbed toml for JoNil/serious_synth_thing written to work/ex/beta-1.38-1/sources/1.37.0/gh/JoNil/serious_synth_thing/Cargo.toml
[INFO] started frobbing JoNil/serious_synth_thing
[INFO] finished frobbing JoNil/serious_synth_thing
[INFO] frobbed toml for JoNil/serious_synth_thing written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JoNil/serious_synth_thing/Cargo.toml
[INFO] crate JoNil/serious_synth_thing 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 JoNil/serious_synth_thing against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/JoNil/serious_synth_thing:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 148116d97cc2ecc4ed9c29fc38650b0bbb267bb5cf059ab9c249bd475cb4eac3
[INFO] running `"docker" "start" "-a" "148116d97cc2ecc4ed9c29fc38650b0bbb267bb5cf059ab9c249bd475cb4eac3"`
[INFO] [stderr]    Compiling lazy_static v0.2.5
[INFO] [stderr]    Compiling alsa-sys v0.1.1
[INFO] [stderr]    Compiling cpal v0.8.0
[INFO] [stderr]    Compiling serious_synth_thing v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `futures::stream::Stream`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use futures::stream::Stream;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::task`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use futures::task;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::task::Executor`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use futures::task::Executor;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::task::Run`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures::task::Run;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `envelope`
[INFO] [stderr]   --> src/synth_thingy.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     envelope: Envelope,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `attack`
[INFO] [stderr]   --> src/synth_thingy.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     attack: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sustain`
[INFO] [stderr]   --> src/synth_thingy.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     sustain: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `decay`
[INFO] [stderr]   --> src/synth_thingy.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     decay: i32,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `release`
[INFO] [stderr]   --> src/synth_thingy.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     release: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MyExecutor`
[INFO] [stderr]   --> src/main.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | struct MyExecutor;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.57s
[INFO] running `"docker" "inspect" "148116d97cc2ecc4ed9c29fc38650b0bbb267bb5cf059ab9c249bd475cb4eac3"`
[INFO] running `"docker" "rm" "-f" "148116d97cc2ecc4ed9c29fc38650b0bbb267bb5cf059ab9c249bd475cb4eac3"`
[INFO] [stdout] 148116d97cc2ecc4ed9c29fc38650b0bbb267bb5cf059ab9c249bd475cb4eac3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/JoNil/serious_synth_thing:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d7cf68abd6db0b1c1b466dd87d741e8aafe55091fe5d762c7b2797a1b39f21bc
[INFO] running `"docker" "start" "-a" "d7cf68abd6db0b1c1b466dd87d741e8aafe55091fe5d762c7b2797a1b39f21bc"`
[INFO] [stderr]    Compiling serious_synth_thing v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `futures::stream::Stream`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use futures::stream::Stream;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::task`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use futures::task;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::task::Executor`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use futures::task::Executor;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::task::Run`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures::task::Run;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `envelope`
[INFO] [stderr]   --> src/synth_thingy.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     envelope: Envelope,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `attack`
[INFO] [stderr]   --> src/synth_thingy.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     attack: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sustain`
[INFO] [stderr]   --> src/synth_thingy.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     sustain: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `decay`
[INFO] [stderr]   --> src/synth_thingy.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     decay: i32,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `release`
[INFO] [stderr]   --> src/synth_thingy.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     release: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "d7cf68abd6db0b1c1b466dd87d741e8aafe55091fe5d762c7b2797a1b39f21bc"`
[INFO] running `"docker" "rm" "-f" "d7cf68abd6db0b1c1b466dd87d741e8aafe55091fe5d762c7b2797a1b39f21bc"`
[INFO] [stdout] d7cf68abd6db0b1c1b466dd87d741e8aafe55091fe5d762c7b2797a1b39f21bc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/JoNil/serious_synth_thing:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 8a359002a1588f210f6307e924a62bcb09040982254bb0c1d96b8b42286ad726
[INFO] running `"docker" "start" "-a" "8a359002a1588f210f6307e924a62bcb09040982254bb0c1d96b8b42286ad726"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/serious_synth_thing-32037a9f16419ff2
[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] running `"docker" "inspect" "8a359002a1588f210f6307e924a62bcb09040982254bb0c1d96b8b42286ad726"`
[INFO] running `"docker" "rm" "-f" "8a359002a1588f210f6307e924a62bcb09040982254bb0c1d96b8b42286ad726"`
[INFO] [stdout] 8a359002a1588f210f6307e924a62bcb09040982254bb0c1d96b8b42286ad726