[INFO] updating cached repository Ryan1729/markov_jukebox
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Ryan1729/markov_jukebox
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Ryan1729/markov_jukebox" "work/ex/beta-1.38-1/sources/1.37.0/gh/Ryan1729/markov_jukebox"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Ryan1729/markov_jukebox'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Ryan1729/markov_jukebox" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Ryan1729/markov_jukebox"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Ryan1729/markov_jukebox'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9c6c631a33a41ab937f9c0d9150775280a273a6a
[INFO] sha for GitHub repo Ryan1729/markov_jukebox: 9c6c631a33a41ab937f9c0d9150775280a273a6a
[INFO] validating manifest of Ryan1729/markov_jukebox 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 Ryan1729/markov_jukebox 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 Ryan1729/markov_jukebox
[INFO] finished frobbing Ryan1729/markov_jukebox
[INFO] frobbed toml for Ryan1729/markov_jukebox written to work/ex/beta-1.38-1/sources/1.37.0/gh/Ryan1729/markov_jukebox/Cargo.toml
[INFO] started frobbing Ryan1729/markov_jukebox
[INFO] finished frobbing Ryan1729/markov_jukebox
[INFO] frobbed toml for Ryan1729/markov_jukebox written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Ryan1729/markov_jukebox/Cargo.toml
[INFO] crate Ryan1729/markov_jukebox 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing Ryan1729/markov_jukebox 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/Ryan1729/markov_jukebox:/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] fd066f1bc8300fa8b265f947859416c09ebbf186f7ab00a7019434cebfb2ceeb
[INFO] running `"docker" "start" "-a" "fd066f1bc8300fa8b265f947859416c09ebbf186f7ab00a7019434cebfb2ceeb"`
[INFO] [stderr]    Compiling hound v2.0.0
[INFO] [stderr]    Compiling sample v0.6.2
[INFO] [stderr]    Compiling markov_jukebox v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:113:22
[INFO] [stderr]     |
[INFO] [stderr] 113 |     let samples: Box<Iterator<Item = i16>> = if spec.bits_per_sample <= 16 {
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = i16>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.33s
[INFO] running `"docker" "inspect" "fd066f1bc8300fa8b265f947859416c09ebbf186f7ab00a7019434cebfb2ceeb"`
[INFO] running `"docker" "rm" "-f" "fd066f1bc8300fa8b265f947859416c09ebbf186f7ab00a7019434cebfb2ceeb"`
[INFO] [stdout] fd066f1bc8300fa8b265f947859416c09ebbf186f7ab00a7019434cebfb2ceeb
[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/Ryan1729/markov_jukebox:/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] fcaadb4056d31623631f93633124009b679b8d46c1dc1c7c7d08466d92331ccb
[INFO] running `"docker" "start" "-a" "fcaadb4056d31623631f93633124009b679b8d46c1dc1c7c7d08466d92331ccb"`
[INFO] [stderr]    Compiling markov_jukebox v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:113:22
[INFO] [stderr]     |
[INFO] [stderr] 113 |     let samples: Box<Iterator<Item = i16>> = if spec.bits_per_sample <= 16 {
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = i16>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "fcaadb4056d31623631f93633124009b679b8d46c1dc1c7c7d08466d92331ccb"`
[INFO] running `"docker" "rm" "-f" "fcaadb4056d31623631f93633124009b679b8d46c1dc1c7c7d08466d92331ccb"`
[INFO] [stdout] fcaadb4056d31623631f93633124009b679b8d46c1dc1c7c7d08466d92331ccb
[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/Ryan1729/markov_jukebox:/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] 43bfc4e2220ed826f13f2dffad37833cfb9cc3b32e3a32dbae11582df696686e
[INFO] running `"docker" "start" "-a" "43bfc4e2220ed826f13f2dffad37833cfb9cc3b32e3a32dbae11582df696686e"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/markov_jukebox-958bc2503d9b6ed2
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "43bfc4e2220ed826f13f2dffad37833cfb9cc3b32e3a32dbae11582df696686e"`
[INFO] running `"docker" "rm" "-f" "43bfc4e2220ed826f13f2dffad37833cfb9cc3b32e3a32dbae11582df696686e"`
[INFO] [stdout] 43bfc4e2220ed826f13f2dffad37833cfb9cc3b32e3a32dbae11582df696686e