[INFO] crate protobuf 2.8.0 is already in cache
[INFO] extracting crate protobuf 2.8.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/protobuf/2.8.0
[INFO] extracting crate protobuf 2.8.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/protobuf/2.8.0
[INFO] validating manifest of protobuf-2.8.0 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 protobuf-2.8.0 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 protobuf-2.8.0
[INFO] finished frobbing protobuf-2.8.0
[INFO] frobbed toml for protobuf-2.8.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/protobuf/2.8.0/Cargo.toml
[INFO] started frobbing protobuf-2.8.0
[INFO] finished frobbing protobuf-2.8.0
[INFO] frobbed toml for protobuf-2.8.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/protobuf/2.8.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 protobuf-2.8.0 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/reg/protobuf/2.8.0:/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] 347bd197d18135ef5018d74dfe973521c8454ce9d08679e91eab75a92d2c4c8e
[INFO] running `"docker" "start" "-a" "347bd197d18135ef5018d74dfe973521c8454ce9d08679e91eab75a92d2c4c8e"`
[INFO] [stderr]    Compiling protobuf v2.8.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'core::parse_length_delimited_from'
[INFO] [stderr]   --> src/lib.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub use core::parse_length_delimited_from;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::parse_length_delimited_from_bytes'
[INFO] [stderr]   --> src/lib.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub use core::parse_length_delimited_from_bytes;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::parse_length_delimited_from_reader'
[INFO] [stderr]   --> src/lib.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub use core::parse_length_delimited_from_reader;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.60s
[INFO] running `"docker" "inspect" "347bd197d18135ef5018d74dfe973521c8454ce9d08679e91eab75a92d2c4c8e"`
[INFO] running `"docker" "rm" "-f" "347bd197d18135ef5018d74dfe973521c8454ce9d08679e91eab75a92d2c4c8e"`
[INFO] [stdout] 347bd197d18135ef5018d74dfe973521c8454ce9d08679e91eab75a92d2c4c8e
[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/reg/protobuf/2.8.0:/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] 72ef994fa2fb4c274006c42022e847749208d50416474aa8fa736aed419c8d5e
[INFO] running `"docker" "start" "-a" "72ef994fa2fb4c274006c42022e847749208d50416474aa8fa736aed419c8d5e"`
[INFO] [stderr]    Compiling protobuf v2.8.0 (/opt/crater/workdir)
[INFO] [stderr] error: couldn't read src/../../protobuf-test-common/src/hex.rs: No such file or directory (os error 2)
[INFO] [stderr]   --> src/lib.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 | mod hex;
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `protobuf`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "72ef994fa2fb4c274006c42022e847749208d50416474aa8fa736aed419c8d5e"`
[INFO] running `"docker" "rm" "-f" "72ef994fa2fb4c274006c42022e847749208d50416474aa8fa736aed419c8d5e"`
[INFO] [stdout] 72ef994fa2fb4c274006c42022e847749208d50416474aa8fa736aed419c8d5e