[INFO] updating cached repository fzzzy/rust-grep
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fzzzy/rust-grep
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fzzzy/rust-grep" "work/ex/beta-1.37-6/sources/1.36.0/gh/fzzzy/rust-grep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/fzzzy/rust-grep'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fzzzy/rust-grep" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/fzzzy/rust-grep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/fzzzy/rust-grep'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e9a4693739beccd8c865f57fe58ad146267fb76c
[INFO] sha for GitHub repo fzzzy/rust-grep: e9a4693739beccd8c865f57fe58ad146267fb76c
[INFO] validating manifest of fzzzy/rust-grep 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 fzzzy/rust-grep 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 fzzzy/rust-grep
[INFO] finished frobbing fzzzy/rust-grep
[INFO] frobbed toml for fzzzy/rust-grep written to work/ex/beta-1.37-6/sources/1.36.0/gh/fzzzy/rust-grep/Cargo.toml
[INFO] started frobbing fzzzy/rust-grep
[INFO] finished frobbing fzzzy/rust-grep
[INFO] frobbed toml for fzzzy/rust-grep written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/fzzzy/rust-grep/Cargo.toml
[INFO] crate fzzzy/rust-grep 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing fzzzy/rust-grep 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-5/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/fzzzy/rust-grep:/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] 36649914e9d14b62902582869a099bb9c9fed6e6ab3affb21775e919b632c37a
[INFO] running `"docker" "start" "-a" "36649914e9d14b62902582869a099bb9c9fed6e6ab3affb21775e919b632c37a"`
[INFO] [stderr]    Compiling rust-grep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:23:34
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn grep_main() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `"docker" "inspect" "36649914e9d14b62902582869a099bb9c9fed6e6ab3affb21775e919b632c37a"`
[INFO] running `"docker" "rm" "-f" "36649914e9d14b62902582869a099bb9c9fed6e6ab3affb21775e919b632c37a"`
[INFO] [stdout] 36649914e9d14b62902582869a099bb9c9fed6e6ab3affb21775e919b632c37a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/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/fzzzy/rust-grep:/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] 674d6f3d370341c03e145f9d234e812f849640204c148f28cee38c09ba6a6133
[INFO] running `"docker" "start" "-a" "674d6f3d370341c03e145f9d234e812f849640204c148f28cee38c09ba6a6133"`
[INFO] [stderr]    Compiling rust-grep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:23:34
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn grep_main() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "674d6f3d370341c03e145f9d234e812f849640204c148f28cee38c09ba6a6133"`
[INFO] running `"docker" "rm" "-f" "674d6f3d370341c03e145f9d234e812f849640204c148f28cee38c09ba6a6133"`
[INFO] [stdout] 674d6f3d370341c03e145f9d234e812f849640204c148f28cee38c09ba6a6133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/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/fzzzy/rust-grep:/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] 3635066e677f75fc01d912887cb2b3a78f7f4be3df860baa6ce66e05af2eeae2
[INFO] running `"docker" "start" "-a" "3635066e677f75fc01d912887cb2b3a78f7f4be3df860baa6ce66e05af2eeae2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_grep-4bf363db29f2fa5c
[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" "3635066e677f75fc01d912887cb2b3a78f7f4be3df860baa6ce66e05af2eeae2"`
[INFO] running `"docker" "rm" "-f" "3635066e677f75fc01d912887cb2b3a78f7f4be3df860baa6ce66e05af2eeae2"`
[INFO] [stdout] 3635066e677f75fc01d912887cb2b3a78f7f4be3df860baa6ce66e05af2eeae2