[INFO] updating cached repository bcko/minigrep-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bcko/minigrep-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bcko/minigrep-rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/bcko/minigrep-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/bcko/minigrep-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bcko/minigrep-rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bcko/minigrep-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bcko/minigrep-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4cd92af31ba6cc55963a5079dd0be6978210b026
[INFO] sha for GitHub repo bcko/minigrep-rust: 4cd92af31ba6cc55963a5079dd0be6978210b026
[INFO] validating manifest of bcko/minigrep-rust 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 bcko/minigrep-rust 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 bcko/minigrep-rust
[INFO] finished frobbing bcko/minigrep-rust
[INFO] frobbed toml for bcko/minigrep-rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/bcko/minigrep-rust/Cargo.toml
[INFO] started frobbing bcko/minigrep-rust
[INFO] finished frobbing bcko/minigrep-rust
[INFO] frobbed toml for bcko/minigrep-rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bcko/minigrep-rust/Cargo.toml
[INFO] crate bcko/minigrep-rust 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 bcko/minigrep-rust 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-3/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/bcko/minigrep-rust:/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] 829fe18b7a7fc56e8d86ee01805bf57da7ffdc6f876d36807143b47037117502
[INFO] running `"docker" "start" "-a" "829fe18b7a7fc56e8d86ee01805bf57da7ffdc6f876d36807143b47037117502"`
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `query`
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let query = &args[1];
[INFO] [stderr]   |         ^^^^^ help: consider prefixing with an underscore: `_query`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "829fe18b7a7fc56e8d86ee01805bf57da7ffdc6f876d36807143b47037117502"`
[INFO] running `"docker" "rm" "-f" "829fe18b7a7fc56e8d86ee01805bf57da7ffdc6f876d36807143b47037117502"`
[INFO] [stdout] 829fe18b7a7fc56e8d86ee01805bf57da7ffdc6f876d36807143b47037117502
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/bcko/minigrep-rust:/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] 2b4794d223253b5afc4d70c832c9064e8e3106ecc132cafad3ad347504124095
[INFO] running `"docker" "start" "-a" "2b4794d223253b5afc4d70c832c9064e8e3106ecc132cafad3ad347504124095"`
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `query`
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let query = &args[1];
[INFO] [stderr]   |         ^^^^^ help: consider prefixing with an underscore: `_query`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "2b4794d223253b5afc4d70c832c9064e8e3106ecc132cafad3ad347504124095"`
[INFO] running `"docker" "rm" "-f" "2b4794d223253b5afc4d70c832c9064e8e3106ecc132cafad3ad347504124095"`
[INFO] [stdout] 2b4794d223253b5afc4d70c832c9064e8e3106ecc132cafad3ad347504124095
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/bcko/minigrep-rust:/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] bcb14e5ab3d645dbd4bdc6e0be77ea56fddec1991c5a32b6553d0daa54c2d77f
[INFO] running `"docker" "start" "-a" "bcb14e5ab3d645dbd4bdc6e0be77ea56fddec1991c5a32b6553d0daa54c2d77f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/minigrep-9e7b9326811e782a
[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" "bcb14e5ab3d645dbd4bdc6e0be77ea56fddec1991c5a32b6553d0daa54c2d77f"`
[INFO] running `"docker" "rm" "-f" "bcb14e5ab3d645dbd4bdc6e0be77ea56fddec1991c5a32b6553d0daa54c2d77f"`
[INFO] [stdout] bcb14e5ab3d645dbd4bdc6e0be77ea56fddec1991c5a32b6553d0daa54c2d77f