[INFO] updating cached repository elementh/rust_grep
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/elementh/rust_grep
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/elementh/rust_grep" "work/ex/beta-1.38-1/sources/1.37.0/gh/elementh/rust_grep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/elementh/rust_grep'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/elementh/rust_grep" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/elementh/rust_grep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/elementh/rust_grep'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c760d6f45447111ef58e95fd8d5209f6057c938f
[INFO] sha for GitHub repo elementh/rust_grep: c760d6f45447111ef58e95fd8d5209f6057c938f
[INFO] validating manifest of elementh/rust_grep 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 elementh/rust_grep 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 elementh/rust_grep
[INFO] finished frobbing elementh/rust_grep
[INFO] frobbed toml for elementh/rust_grep written to work/ex/beta-1.38-1/sources/1.37.0/gh/elementh/rust_grep/Cargo.toml
[INFO] started frobbing elementh/rust_grep
[INFO] finished frobbing elementh/rust_grep
[INFO] frobbed toml for elementh/rust_grep written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/elementh/rust_grep/Cargo.toml
[INFO] crate elementh/rust_grep 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 elementh/rust_grep 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/elementh/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 2f7710fc95bc61440641d9d6830d4c08984e0f166ad5b98149a9751f7380af03
[INFO] running `"docker" "start" "-a" "2f7710fc95bc61440641d9d6830d4c08984e0f166ad5b98149a9751f7380af03"`
[INFO] [stderr]    Compiling rust_grep v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/lib.rs:6:46
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn run(config: Config) -> 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 1.21s
[INFO] running `"docker" "inspect" "2f7710fc95bc61440641d9d6830d4c08984e0f166ad5b98149a9751f7380af03"`
[INFO] running `"docker" "rm" "-f" "2f7710fc95bc61440641d9d6830d4c08984e0f166ad5b98149a9751f7380af03"`
[INFO] [stdout] 2f7710fc95bc61440641d9d6830d4c08984e0f166ad5b98149a9751f7380af03
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/elementh/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ddc30a9686f1e1e0dca362667501bd5e83d2afa90efaf12b51d2c233dfdfa942
[INFO] running `"docker" "start" "-a" "ddc30a9686f1e1e0dca362667501bd5e83d2afa90efaf12b51d2c233dfdfa942"`
[INFO] [stderr]    Compiling rust_grep v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/lib.rs:6:46
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn run(config: Config) -> 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 1.22s
[INFO] running `"docker" "inspect" "ddc30a9686f1e1e0dca362667501bd5e83d2afa90efaf12b51d2c233dfdfa942"`
[INFO] running `"docker" "rm" "-f" "ddc30a9686f1e1e0dca362667501bd5e83d2afa90efaf12b51d2c233dfdfa942"`
[INFO] [stdout] ddc30a9686f1e1e0dca362667501bd5e83d2afa90efaf12b51d2c233dfdfa942
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/elementh/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] ada2b07b66269ce606d2234ba22866495a985af966bb1d8dae227cc4c6bf0de7
[INFO] running `"docker" "start" "-a" "ada2b07b66269ce606d2234ba22866495a985af966bb1d8dae227cc4c6bf0de7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_grep-57c5a0bccdcdd7e4
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::case_sensitive ... ok
[INFO] [stdout] test test::case_insensitive ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_grep-2be748e90ed2e611
[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] [stderr]    Doc-tests rust_grep
[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" "ada2b07b66269ce606d2234ba22866495a985af966bb1d8dae227cc4c6bf0de7"`
[INFO] running `"docker" "rm" "-f" "ada2b07b66269ce606d2234ba22866495a985af966bb1d8dae227cc4c6bf0de7"`
[INFO] [stdout] ada2b07b66269ce606d2234ba22866495a985af966bb1d8dae227cc4c6bf0de7