[INFO] crate ogg_vorbis_ref 0.0.3 is already in cache
[INFO] extracting crate ogg_vorbis_ref 0.0.3 into work/ex/beta-1.37-6/sources/1.36.0/reg/ogg_vorbis_ref/0.0.3
[INFO] extracting crate ogg_vorbis_ref 0.0.3 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ogg_vorbis_ref/0.0.3
[INFO] validating manifest of ogg_vorbis_ref-0.0.3 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 ogg_vorbis_ref-0.0.3 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 ogg_vorbis_ref-0.0.3
[INFO] finished frobbing ogg_vorbis_ref-0.0.3
[INFO] frobbed toml for ogg_vorbis_ref-0.0.3 written to work/ex/beta-1.37-6/sources/1.36.0/reg/ogg_vorbis_ref/0.0.3/Cargo.toml
[INFO] started frobbing ogg_vorbis_ref-0.0.3
[INFO] finished frobbing ogg_vorbis_ref-0.0.3
[INFO] frobbed toml for ogg_vorbis_ref-0.0.3 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ogg_vorbis_ref/0.0.3/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing ogg_vorbis_ref-0.0.3 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-2/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/ogg_vorbis_ref/0.0.3:/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] c8333ad307773e501152f3b0d4b207d37d68d12dadae9edc61997df5ae9c0e72
[INFO] running `"docker" "start" "-a" "c8333ad307773e501152f3b0d4b207d37d68d12dadae9edc61997df5ae9c0e72"`
[INFO] [stderr]    Compiling ogg-sys v0.0.9
[INFO] [stderr]    Compiling vorbis-sys v0.0.8
[INFO] [stderr]    Compiling ogg_vorbis_ref v0.0.3 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:177:13
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let mut synth = self.synth.as_mut().unwrap();
[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 1.73s
[INFO] running `"docker" "inspect" "c8333ad307773e501152f3b0d4b207d37d68d12dadae9edc61997df5ae9c0e72"`
[INFO] running `"docker" "rm" "-f" "c8333ad307773e501152f3b0d4b207d37d68d12dadae9edc61997df5ae9c0e72"`
[INFO] [stdout] c8333ad307773e501152f3b0d4b207d37d68d12dadae9edc61997df5ae9c0e72
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/ogg_vorbis_ref/0.0.3:/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] 1e975bf59470a51cbb6426a9d3d37d9dade67ec40f38c7f6a836f0f06ca53c43
[INFO] running `"docker" "start" "-a" "1e975bf59470a51cbb6426a9d3d37d9dade67ec40f38c7f6a836f0f06ca53c43"`
[INFO] [stderr]    Compiling ogg_vorbis_ref v0.0.3 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:177:13
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let mut synth = self.synth.as_mut().unwrap();
[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 0.50s
[INFO] running `"docker" "inspect" "1e975bf59470a51cbb6426a9d3d37d9dade67ec40f38c7f6a836f0f06ca53c43"`
[INFO] running `"docker" "rm" "-f" "1e975bf59470a51cbb6426a9d3d37d9dade67ec40f38c7f6a836f0f06ca53c43"`
[INFO] [stdout] 1e975bf59470a51cbb6426a9d3d37d9dade67ec40f38c7f6a836f0f06ca53c43
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/ogg_vorbis_ref/0.0.3:/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] cdf00fdb23ab8873cdcde81f3966affa3b98b0751d5d21f94365e604233362c4
[INFO] running `"docker" "start" "-a" "cdf00fdb23ab8873cdcde81f3966affa3b98b0751d5d21f94365e604233362c4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ogg_vorbis_ref-419f0306629a539c
[INFO] [stderr]    Doc-tests ogg_vorbis_ref
[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] [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" "cdf00fdb23ab8873cdcde81f3966affa3b98b0751d5d21f94365e604233362c4"`
[INFO] running `"docker" "rm" "-f" "cdf00fdb23ab8873cdcde81f3966affa3b98b0751d5d21f94365e604233362c4"`
[INFO] [stdout] cdf00fdb23ab8873cdcde81f3966affa3b98b0751d5d21f94365e604233362c4