[INFO] updating cached repository tsullens/arc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tsullens/arc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tsullens/arc" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tsullens/arc"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tsullens/arc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tsullens/arc" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tsullens/arc"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tsullens/arc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dd8a8a6cdb2ffe7c7b67f65b9a302a8232f09a18
[INFO] sha for GitHub repo tsullens/arc: dd8a8a6cdb2ffe7c7b67f65b9a302a8232f09a18
[INFO] validating manifest of tsullens/arc 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 tsullens/arc 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 tsullens/arc
[INFO] finished frobbing tsullens/arc
[INFO] frobbed toml for tsullens/arc written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tsullens/arc/Cargo.toml
[INFO] started frobbing tsullens/arc
[INFO] finished frobbing tsullens/arc
[INFO] frobbed toml for tsullens/arc written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tsullens/arc/Cargo.toml
[INFO] crate tsullens/arc 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 tsullens/arc against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-5/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bddcd2aeff73e01f034cfa3cbe7d51f76c223554091ebbf838f2221c10ad8ecd
[INFO] running `"docker" "start" "-a" "bddcd2aeff73e01f034cfa3cbe7d51f76c223554091ebbf838f2221c10ad8ecd"`
[INFO] [stderr]    Compiling serde v1.0.59
[INFO] [stderr]     Checking rand_core v0.2.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking serde_test v0.8.23
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking rand v0.5.0
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]     Checking serde-hjson v0.8.1
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]     Checking config v0.8.0
[INFO] [stderr]     Checking arc v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `inc_key_count`
[INFO] [stderr]    --> src/server.rs:159:5
[INFO] [stderr]     |
[INFO] [stderr] 159 |     pub fn inc_key_count(&self) -> () {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `inc_key_count`
[INFO] [stderr]    --> src/server.rs:159:5
[INFO] [stderr]     |
[INFO] [stderr] 159 |     pub fn inc_key_count(&self) -> () {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.06s
[INFO] running `"docker" "inspect" "bddcd2aeff73e01f034cfa3cbe7d51f76c223554091ebbf838f2221c10ad8ecd"`
[INFO] running `"docker" "rm" "-f" "bddcd2aeff73e01f034cfa3cbe7d51f76c223554091ebbf838f2221c10ad8ecd"`
[INFO] [stdout] bddcd2aeff73e01f034cfa3cbe7d51f76c223554091ebbf838f2221c10ad8ecd