[INFO] updating cached repository rw/rust_flatbuffers_example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rw/rust_flatbuffers_example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rw/rust_flatbuffers_example" "work/ex/beta-1.37-6/sources/1.36.0/gh/rw/rust_flatbuffers_example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/rw/rust_flatbuffers_example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rw/rust_flatbuffers_example" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rw/rust_flatbuffers_example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rw/rust_flatbuffers_example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 362725951ebc826c7648ad609045c1ed46f7a697
[INFO] sha for GitHub repo rw/rust_flatbuffers_example: 362725951ebc826c7648ad609045c1ed46f7a697
[INFO] validating manifest of rw/rust_flatbuffers_example 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 rw/rust_flatbuffers_example 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 rw/rust_flatbuffers_example
[INFO] finished frobbing rw/rust_flatbuffers_example
[INFO] frobbed toml for rw/rust_flatbuffers_example written to work/ex/beta-1.37-6/sources/1.36.0/gh/rw/rust_flatbuffers_example/Cargo.toml
[INFO] started frobbing rw/rust_flatbuffers_example
[INFO] finished frobbing rw/rust_flatbuffers_example
[INFO] frobbed toml for rw/rust_flatbuffers_example written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rw/rust_flatbuffers_example/Cargo.toml
[INFO] crate rw/rust_flatbuffers_example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/rw/rust_flatbuffers_example/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 rw/rust_flatbuffers_example 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-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rw/rust_flatbuffers_example:/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] ef29bde49596b4399cadef86dc074642d1cde89b4c4bfe0f8e300f1472680243
[INFO] running `"docker" "start" "-a" "ef29bde49596b4399cadef86dc074642d1cde89b4c4bfe0f8e300f1472680243"`
[INFO] [stderr]    Compiling flatbuffers v0.6.0
[INFO] [stderr]    Compiling rust_flatbuffers_example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/myschema_generated.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/myschema_generated.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::flatbuffers::EndianScalar`
[INFO] [stderr]  --> src/myschema_generated.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use self::flatbuffers::EndianScalar;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `"docker" "inspect" "ef29bde49596b4399cadef86dc074642d1cde89b4c4bfe0f8e300f1472680243"`
[INFO] running `"docker" "rm" "-f" "ef29bde49596b4399cadef86dc074642d1cde89b4c4bfe0f8e300f1472680243"`
[INFO] [stdout] ef29bde49596b4399cadef86dc074642d1cde89b4c4bfe0f8e300f1472680243
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rw/rust_flatbuffers_example:/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] 917a6cbe5c5015c5037298e872c63bc0836b37c03477beaa17c0d669813e063b
[INFO] running `"docker" "start" "-a" "917a6cbe5c5015c5037298e872c63bc0836b37c03477beaa17c0d669813e063b"`
[INFO] [stderr]    Compiling rust_flatbuffers_example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/myschema_generated.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/myschema_generated.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::flatbuffers::EndianScalar`
[INFO] [stderr]  --> src/myschema_generated.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use self::flatbuffers::EndianScalar;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `"docker" "inspect" "917a6cbe5c5015c5037298e872c63bc0836b37c03477beaa17c0d669813e063b"`
[INFO] running `"docker" "rm" "-f" "917a6cbe5c5015c5037298e872c63bc0836b37c03477beaa17c0d669813e063b"`
[INFO] [stdout] 917a6cbe5c5015c5037298e872c63bc0836b37c03477beaa17c0d669813e063b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rw/rust_flatbuffers_example:/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] 396516fd56fe45935c1db326ba4cef6810c7be40c76fafb3e75ca45b43f2545e
[INFO] running `"docker" "start" "-a" "396516fd56fe45935c1db326ba4cef6810c7be40c76fafb3e75ca45b43f2545e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_flatbuffers_example-aa2282bc548fc60f
[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" "396516fd56fe45935c1db326ba4cef6810c7be40c76fafb3e75ca45b43f2545e"`
[INFO] running `"docker" "rm" "-f" "396516fd56fe45935c1db326ba4cef6810c7be40c76fafb3e75ca45b43f2545e"`
[INFO] [stdout] 396516fd56fe45935c1db326ba4cef6810c7be40c76fafb3e75ca45b43f2545e