Dec 19 16:14:34.225 INFO checking hamadakafu/rust_client against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 16:14:34.225 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/hamadakafu/rust_client:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 16:14:34.393 INFO [stdout] 1e10f4772390c472a76adafad88208ce568c44edfcb6e4de517723d58ea6b6a1
Dec 19 16:14:34.397 INFO running `"docker" "start" "-a" "1e10f4772390c472a76adafad88208ce568c44edfcb6e4de517723d58ea6b6a1"`
Dec 19 16:14:34.952 INFO [stderr]     Checking rust_client v0.1.0 (/opt/crater/workdir)
Dec 19 16:14:35.124 INFO [stderr] warning: unused variable: `buf`
Dec 19 16:14:35.124 INFO [stderr]   --> src/main.rs:10:7
Dec 19 16:14:35.124 INFO [stderr]    |
Dec 19 16:14:35.124 INFO [stderr] 10 |   let buf = String::new();
Dec 19 16:14:35.124 INFO [stderr]    |       ^^^ help: consider using `_buf` instead
Dec 19 16:14:35.124 INFO [stderr]    |
Dec 19 16:14:35.124 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 16:14:35.124 INFO [stderr] 
Dec 19 16:14:35.124 INFO [stderr] warning: unused variable: `buf`
Dec 19 16:14:35.124 INFO [stderr]   --> src/main.rs:10:7
Dec 19 16:14:35.124 INFO [stderr]    |
Dec 19 16:14:35.124 INFO [stderr] 10 |   let buf = String::new();
Dec 19 16:14:35.124 INFO [stderr]    |       ^^^ help: consider using `_buf` instead
Dec 19 16:14:35.124 INFO [stderr]    |
Dec 19 16:14:35.124 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 16:14:35.124 INFO [stderr] 
Dec 19 16:14:35.141 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
Dec 19 16:14:35.370 INFO running `"docker" "inspect" "1e10f4772390c472a76adafad88208ce568c44edfcb6e4de517723d58ea6b6a1"`
Dec 19 16:14:35.506 INFO running `"docker" "rm" "-f" "1e10f4772390c472a76adafad88208ce568c44edfcb6e4de517723d58ea6b6a1"`
Dec 19 16:14:35.589 INFO [stdout] 1e10f4772390c472a76adafad88208ce568c44edfcb6e4de517723d58ea6b6a1