[INFO] updating cached repository grobinson1/flatjson
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/grobinson1/flatjson
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/grobinson1/flatjson" "work/ex/beta-1.38-1/sources/1.37.0/gh/grobinson1/flatjson"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/grobinson1/flatjson'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/grobinson1/flatjson" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grobinson1/flatjson"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grobinson1/flatjson'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bf32c001c85b6e6b4b50e062149fa95fdfd9c276
[INFO] sha for GitHub repo grobinson1/flatjson: bf32c001c85b6e6b4b50e062149fa95fdfd9c276
[INFO] validating manifest of grobinson1/flatjson 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 grobinson1/flatjson 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 grobinson1/flatjson
[INFO] finished frobbing grobinson1/flatjson
[INFO] frobbed toml for grobinson1/flatjson written to work/ex/beta-1.38-1/sources/1.37.0/gh/grobinson1/flatjson/Cargo.toml
[INFO] started frobbing grobinson1/flatjson
[INFO] finished frobbing grobinson1/flatjson
[INFO] frobbed toml for grobinson1/flatjson written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/grobinson1/flatjson/Cargo.toml
[INFO] crate grobinson1/flatjson 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] testing grobinson1/flatjson 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/gh/grobinson1/flatjson:/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] 8d2fa5d8cdf75b0543dae3b2e6ff954b0ff2d33f1ea6005fed51abcbfc5a9834
[INFO] running `"docker" "start" "-a" "8d2fa5d8cdf75b0543dae3b2e6ff954b0ff2d33f1ea6005fed51abcbfc5a9834"`
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling backtrace v0.3.30
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling flatjson v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:12:21
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let reader: Box<BufRead> = match input {
[INFO] [stderr]    |                     ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.92s
[INFO] running `"docker" "inspect" "8d2fa5d8cdf75b0543dae3b2e6ff954b0ff2d33f1ea6005fed51abcbfc5a9834"`
[INFO] running `"docker" "rm" "-f" "8d2fa5d8cdf75b0543dae3b2e6ff954b0ff2d33f1ea6005fed51abcbfc5a9834"`
[INFO] [stdout] 8d2fa5d8cdf75b0543dae3b2e6ff954b0ff2d33f1ea6005fed51abcbfc5a9834
[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/gh/grobinson1/flatjson:/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] 2849bbdf84931cb7d4fb5da062bbf6ee25876f05f34a679dff4441787b8fdb59
[INFO] running `"docker" "start" "-a" "2849bbdf84931cb7d4fb5da062bbf6ee25876f05f34a679dff4441787b8fdb59"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling flatjson v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:12:21
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let reader: Box<BufRead> = match input {
[INFO] [stderr]    |                     ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `"docker" "inspect" "2849bbdf84931cb7d4fb5da062bbf6ee25876f05f34a679dff4441787b8fdb59"`
[INFO] running `"docker" "rm" "-f" "2849bbdf84931cb7d4fb5da062bbf6ee25876f05f34a679dff4441787b8fdb59"`
[INFO] [stdout] 2849bbdf84931cb7d4fb5da062bbf6ee25876f05f34a679dff4441787b8fdb59
[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/gh/grobinson1/flatjson:/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"`
[INFO] [stdout] b1d12c713558179b0ec091a9810f81e0367f6803432b7ef230ad85b5d7cf4a82
[INFO] running `"docker" "start" "-a" "b1d12c713558179b0ec091a9810f81e0367f6803432b7ef230ad85b5d7cf4a82"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/flatjson-51f1c0fddfc4697e
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test flatjson::test::test_flatten ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b1d12c713558179b0ec091a9810f81e0367f6803432b7ef230ad85b5d7cf4a82"`
[INFO] running `"docker" "rm" "-f" "b1d12c713558179b0ec091a9810f81e0367f6803432b7ef230ad85b5d7cf4a82"`
[INFO] [stdout] b1d12c713558179b0ec091a9810f81e0367f6803432b7ef230ad85b5d7cf4a82