[INFO] updating cached repository henryroyal/cli-binary-search
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/henryroyal/cli-binary-search
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/henryroyal/cli-binary-search" "work/ex/beta-1.38-1/sources/1.37.0/gh/henryroyal/cli-binary-search"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/henryroyal/cli-binary-search'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/henryroyal/cli-binary-search" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/henryroyal/cli-binary-search"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/henryroyal/cli-binary-search'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a2fc3d7a0657071152ab8c219d13e18a94aa6942
[INFO] sha for GitHub repo henryroyal/cli-binary-search: a2fc3d7a0657071152ab8c219d13e18a94aa6942
[INFO] validating manifest of henryroyal/cli-binary-search 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 henryroyal/cli-binary-search 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 henryroyal/cli-binary-search
[INFO] finished frobbing henryroyal/cli-binary-search
[INFO] frobbed toml for henryroyal/cli-binary-search written to work/ex/beta-1.38-1/sources/1.37.0/gh/henryroyal/cli-binary-search/Cargo.toml
[INFO] started frobbing henryroyal/cli-binary-search
[INFO] finished frobbing henryroyal/cli-binary-search
[INFO] frobbed toml for henryroyal/cli-binary-search written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/henryroyal/cli-binary-search/Cargo.toml
[INFO] crate henryroyal/cli-binary-search 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 henryroyal/cli-binary-search 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/henryroyal/cli-binary-search:/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] 181a9929bc2fb48b05bf0f2d75d19c2d699c38cae93ca6dd0768e750a76705de
[INFO] running `"docker" "start" "-a" "181a9929bc2fb48b05bf0f2d75d19c2d699c38cae93ca6dd0768e750a76705de"`
[INFO] [stderr]    Compiling binary_search v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `len_one`
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let len_one = one.remove(0);
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_len_one`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len_two`
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let len_two = two.remove(0);
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_len_two`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `DEBUG` should have a snake case name
[INFO] [stderr]   --> src/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let DEBUG: bool = false;
[INFO] [stderr]    |         ^^^^^ help: convert the identifier to snake case: `debug`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     stdin.read_line(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `"docker" "inspect" "181a9929bc2fb48b05bf0f2d75d19c2d699c38cae93ca6dd0768e750a76705de"`
[INFO] running `"docker" "rm" "-f" "181a9929bc2fb48b05bf0f2d75d19c2d699c38cae93ca6dd0768e750a76705de"`
[INFO] [stdout] 181a9929bc2fb48b05bf0f2d75d19c2d699c38cae93ca6dd0768e750a76705de
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/henryroyal/cli-binary-search:/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] f08f3cd2968973d29cec2062fc1e2f96f95d8b041c3995c078b7848f01185437
[INFO] running `"docker" "start" "-a" "f08f3cd2968973d29cec2062fc1e2f96f95d8b041c3995c078b7848f01185437"`
[INFO] [stderr]    Compiling binary_search v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `len_one`
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let len_one = one.remove(0);
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_len_one`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len_two`
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let len_two = two.remove(0);
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_len_two`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `DEBUG` should have a snake case name
[INFO] [stderr]   --> src/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let DEBUG: bool = false;
[INFO] [stderr]    |         ^^^^^ help: convert the identifier to snake case: `debug`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     stdin.read_line(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "f08f3cd2968973d29cec2062fc1e2f96f95d8b041c3995c078b7848f01185437"`
[INFO] running `"docker" "rm" "-f" "f08f3cd2968973d29cec2062fc1e2f96f95d8b041c3995c078b7848f01185437"`
[INFO] [stdout] f08f3cd2968973d29cec2062fc1e2f96f95d8b041c3995c078b7848f01185437
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/henryroyal/cli-binary-search:/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] 24ef3a0fcba682607e3622b130842ab706be748178b934ab2a3134e40d0ed1f4
[INFO] running `"docker" "start" "-a" "24ef3a0fcba682607e3622b130842ab706be748178b934ab2a3134e40d0ed1f4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/binary_search-5d97bceb442ea2b0
[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" "24ef3a0fcba682607e3622b130842ab706be748178b934ab2a3134e40d0ed1f4"`
[INFO] running `"docker" "rm" "-f" "24ef3a0fcba682607e3622b130842ab706be748178b934ab2a3134e40d0ed1f4"`
[INFO] [stdout] 24ef3a0fcba682607e3622b130842ab706be748178b934ab2a3134e40d0ed1f4