[INFO] updating cached repository teaearlgraycold/BrainFuck
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/teaearlgraycold/BrainFuck
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/teaearlgraycold/BrainFuck" "work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/teaearlgraycold/BrainFuck"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/teaearlgraycold/BrainFuck'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/teaearlgraycold/BrainFuck" "work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/teaearlgraycold/BrainFuck"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/teaearlgraycold/BrainFuck'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c88020ebd189e40b78cfdb12ab6c51fe6266a1d7
[INFO] sha for GitHub repo teaearlgraycold/BrainFuck: c88020ebd189e40b78cfdb12ab6c51fe6266a1d7
[INFO] validating manifest of teaearlgraycold/BrainFuck on toolchain master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of teaearlgraycold/BrainFuck on toolchain try#29640c57b5f92febba0e40c50cb863c9a7ede51d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing teaearlgraycold/BrainFuck
[INFO] finished frobbing teaearlgraycold/BrainFuck
[INFO] frobbed toml for teaearlgraycold/BrainFuck written to work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/teaearlgraycold/BrainFuck/Cargo.toml
[INFO] started frobbing teaearlgraycold/BrainFuck
[INFO] finished frobbing teaearlgraycold/BrainFuck
[INFO] frobbed toml for teaearlgraycold/BrainFuck written to work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/teaearlgraycold/BrainFuck/Cargo.toml
[INFO] crate teaearlgraycold/BrainFuck has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking teaearlgraycold/BrainFuck against try#29640c57b5f92febba0e40c50cb863c9a7ede51d for pr-57745
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57745/worker-3/try#29640c57b5f92febba0e40c50cb863c9a7ede51d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/teaearlgraycold/BrainFuck:/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" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] aac23258de234d1ff5fb5bc88acc745337cbd55b8a562407c2a966d1074c65c5
[INFO] running `"docker" "start" "-a" "aac23258de234d1ff5fb5bc88acc745337cbd55b8a562407c2a966d1074c65c5"`
[INFO] [stderr]     Checking fucker v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `file_size`
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let file_size = file.read_to_string(&mut buffer)?;
[INFO] [stderr]    |         ^^^^^^^^^ help: consider using `_file_size` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_size`
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let file_size = file.read_to_string(&mut buffer)?;
[INFO] [stderr]    |         ^^^^^^^^^ help: consider using `_file_size` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/fucker.rs:124:21
[INFO] [stderr]     |
[INFO] [stderr] 124 |                     std::io::stdout().flush();
[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] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/fucker.rs:124:21
[INFO] [stderr]     |
[INFO] [stderr] 124 |                     std::io::stdout().flush();
[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 0.54s
[INFO] running `"docker" "inspect" "aac23258de234d1ff5fb5bc88acc745337cbd55b8a562407c2a966d1074c65c5"`
[INFO] running `"docker" "rm" "-f" "aac23258de234d1ff5fb5bc88acc745337cbd55b8a562407c2a966d1074c65c5"`
[INFO] [stdout] aac23258de234d1ff5fb5bc88acc745337cbd55b8a562407c2a966d1074c65c5