[INFO] updating cached repository backuitist/smart-runner
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/backuitist/smart-runner
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/backuitist/smart-runner" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/backuitist/smart-runner"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/backuitist/smart-runner'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/backuitist/smart-runner" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/backuitist/smart-runner"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/backuitist/smart-runner'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9150032d7fd5f699664c5b8a3f92ded0729e4d6d
[INFO] sha for GitHub repo backuitist/smart-runner: 9150032d7fd5f699664c5b8a3f92ded0729e4d6d
[INFO] validating manifest of backuitist/smart-runner on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of backuitist/smart-runner on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing backuitist/smart-runner
[INFO] finished frobbing backuitist/smart-runner
[INFO] frobbed toml for backuitist/smart-runner written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/backuitist/smart-runner/Cargo.toml
[INFO] started frobbing backuitist/smart-runner
[INFO] finished frobbing backuitist/smart-runner
[INFO] frobbed toml for backuitist/smart-runner written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/backuitist/smart-runner/Cargo.toml
[INFO] crate backuitist/smart-runner already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking backuitist/smart-runner against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-3/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/backuitist/smart-runner:/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=forbid" "-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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9e74352b0ebb195f30cb5f4ce45e3c5fe9484673f09a0c6620149a58dc7c25ef
[INFO] running `"docker" "start" "-a" "9e74352b0ebb195f30cb5f4ce45e3c5fe9484673f09a0c6620149a58dc7c25ef"`
[INFO] [stderr]     Checking itertools v0.7.6
[INFO] [stderr]     Checking hamcrest v0.1.5
[INFO] [stderr]     Checking smart-runner v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Placeholders`
[INFO] [stderr]  --> src/suggestion.rs:3:34
[INFO] [stderr]   |
[INFO] [stderr] 3 | use command::{Command, Commands, Placeholders};
[INFO] [stderr]   |                                  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/screen.rs:242:5
[INFO] [stderr]     |
[INFO] [stderr] 242 |     write!(colorized, "{}{}{}", color::Fg(color), msg, color::Fg(color::Reset));
[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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/screen.rs:242:5
[INFO] [stderr]     |
[INFO] [stderr] 242 |     write!(colorized, "{}{}{}", color::Fg(color), msg, color::Fg(color::Reset));
[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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.96s
[INFO] running `"docker" "inspect" "9e74352b0ebb195f30cb5f4ce45e3c5fe9484673f09a0c6620149a58dc7c25ef"`
[INFO] running `"docker" "rm" "-f" "9e74352b0ebb195f30cb5f4ce45e3c5fe9484673f09a0c6620149a58dc7c25ef"`
[INFO] [stdout] 9e74352b0ebb195f30cb5f4ce45e3c5fe9484673f09a0c6620149a58dc7c25ef