[INFO] fetching crate cubeb-backend 0.5.5...
[INFO] extracting crate cubeb-backend 0.5.5 into work/ex/beta-1.37-6/sources/1.36.0/reg/cubeb-backend/0.5.5
[INFO] extracting crate cubeb-backend 0.5.5 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cubeb-backend/0.5.5
[INFO] validating manifest of cubeb-backend-0.5.5 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cubeb-backend-0.5.5 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cubeb-backend-0.5.5
[INFO] finished frobbing cubeb-backend-0.5.5
[INFO] frobbed toml for cubeb-backend-0.5.5 written to work/ex/beta-1.37-6/sources/1.36.0/reg/cubeb-backend/0.5.5/Cargo.toml
[INFO] started frobbing cubeb-backend-0.5.5
[INFO] finished frobbing cubeb-backend-0.5.5
[INFO] frobbed toml for cubeb-backend-0.5.5 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cubeb-backend/0.5.5/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing cubeb-backend-0.5.5 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cubeb-backend/0.5.5:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] f9d5362a80da973e2362dcc4f71a2eee289f8e1ace36d911bcaac34a2dcb375f
[INFO] running `"docker" "start" "-a" "f9d5362a80da973e2362dcc4f71a2eee289f8e1ace36d911bcaac34a2dcb375f"`
[INFO] [stderr]    Compiling cubeb-sys v0.5.6
[INFO] [stderr]    Compiling cubeb-core v0.5.6
[INFO] [stderr]    Compiling cubeb-backend v0.5.5 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.48s
[INFO] running `"docker" "inspect" "f9d5362a80da973e2362dcc4f71a2eee289f8e1ace36d911bcaac34a2dcb375f"`
[INFO] running `"docker" "rm" "-f" "f9d5362a80da973e2362dcc4f71a2eee289f8e1ace36d911bcaac34a2dcb375f"`
[INFO] [stdout] f9d5362a80da973e2362dcc4f71a2eee289f8e1ace36d911bcaac34a2dcb375f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cubeb-backend/0.5.5:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] bbec505c6c83c5294fc360b435b8635cda985c910f7599d423ef55ea43a3df75
[INFO] running `"docker" "start" "-a" "bbec505c6c83c5294fc360b435b8635cda985c910f7599d423ef55ea43a3df75"`
[INFO] [stderr]    Compiling cubeb-backend v0.5.5 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `"docker" "inspect" "bbec505c6c83c5294fc360b435b8635cda985c910f7599d423ef55ea43a3df75"`
[INFO] running `"docker" "rm" "-f" "bbec505c6c83c5294fc360b435b8635cda985c910f7599d423ef55ea43a3df75"`
[INFO] [stdout] bbec505c6c83c5294fc360b435b8635cda985c910f7599d423ef55ea43a3df75
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cubeb-backend/0.5.5:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 9fd5d47a85b90298be1604eadf22d605472b902e3c5d5836481c9ddde9cc599d
[INFO] running `"docker" "start" "-a" "9fd5d47a85b90298be1604eadf22d605472b902e3c5d5836481c9ddde9cc599d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cubeb_backend-e14a46b634e85336
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test log::tests::test_normal_logging ... ok
[INFO] [stdout] test log::tests::test_verbose_logging ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/test_capi-359831f49721c2c0
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test test_ops_context_enumerate_devices ... ok
[INFO] [stdout] test test_ops_context_init ... ok
[INFO] [stdout] test test_ops_context_max_channel_count ... ok
[INFO] [stdout] test test_ops_context_device_collection_destroy ... ok
[INFO] [stdout] test test_ops_context_min_latency ... ok
[INFO] [stdout] test test_ops_stream_latency ... ok
[INFO] [stdout] test test_ops_stream_set_panning ... ok
[INFO] [stdout] test test_ops_context_preferred_sample_rate ... ok
[INFO] [stdout] test test_ops_stream_current_device ... ok
[INFO] [stdout] test test_ops_stream_set_volume ... ok
[INFO] [stdout] test test_ops_stream_device_destroy ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cubeb-backend
[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" "9fd5d47a85b90298be1604eadf22d605472b902e3c5d5836481c9ddde9cc599d"`
[INFO] running `"docker" "rm" "-f" "9fd5d47a85b90298be1604eadf22d605472b902e3c5d5836481c9ddde9cc599d"`
[INFO] [stdout] 9fd5d47a85b90298be1604eadf22d605472b902e3c5d5836481c9ddde9cc599d