Dec 19 06:38:30.828 INFO checking tsullens/arc against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 06:38:30.828 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/tsullens/arc:/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 06:38:31.240 INFO [stdout] 1dc9dcbea44b589109cda84bd705426ca696bb685b745c442199cf1e36fd04f1
Dec 19 06:38:31.248 INFO running `"docker" "start" "-a" "1dc9dcbea44b589109cda84bd705426ca696bb685b745c442199cf1e36fd04f1"`
Dec 19 06:38:32.690 INFO [stderr]    Compiling serde v1.0.59
Dec 19 06:38:32.691 INFO [stderr]     Checking rand_core v0.2.0
Dec 19 06:38:32.697 INFO [stderr]     Checking yaml-rust v0.4.0
Dec 19 06:38:32.698 INFO [stderr]     Checking serde-hjson v0.8.1
Dec 19 06:38:33.841 INFO [stderr]     Checking rand v0.5.0
Dec 19 06:38:44.302 INFO [stderr]     Checking toml v0.4.6
Dec 19 06:38:44.302 INFO [stderr]     Checking serde_json v1.0.17
Dec 19 06:38:46.894 INFO [stderr]     Checking config v0.8.0
Dec 19 06:38:47.947 INFO [stderr]     Checking arc v0.0.1 (/opt/crater/workdir)
Dec 19 06:38:48.705 INFO [stderr] warning: method is never used: `inc_key_count`
Dec 19 06:38:48.705 INFO [stderr]    --> src/server.rs:159:5
Dec 19 06:38:48.705 INFO [stderr]     |
Dec 19 06:38:48.705 INFO [stderr] 159 |     pub fn inc_key_count(&self) -> () {
Dec 19 06:38:48.705 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 06:38:48.705 INFO [stderr]     |
Dec 19 06:38:48.705 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 06:38:48.705 INFO [stderr] 
Dec 19 06:38:48.712 INFO [stderr] warning: method is never used: `inc_key_count`
Dec 19 06:38:48.712 INFO [stderr]    --> src/server.rs:159:5
Dec 19 06:38:48.712 INFO [stderr]     |
Dec 19 06:38:48.712 INFO [stderr] 159 |     pub fn inc_key_count(&self) -> () {
Dec 19 06:38:48.712 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 06:38:48.712 INFO [stderr]     |
Dec 19 06:38:48.712 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 06:38:48.712 INFO [stderr] 
Dec 19 06:38:48.744 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.18s
Dec 19 06:38:49.686 INFO running `"docker" "inspect" "1dc9dcbea44b589109cda84bd705426ca696bb685b745c442199cf1e36fd04f1"`
Dec 19 06:38:50.026 INFO running `"docker" "rm" "-f" "1dc9dcbea44b589109cda84bd705426ca696bb685b745c442199cf1e36fd04f1"`
Dec 19 06:38:50.328 INFO [stdout] 1dc9dcbea44b589109cda84bd705426ca696bb685b745c442199cf1e36fd04f1