[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-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tsullens/arc"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tsullens/arc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tsullens/arc" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/tsullens/arc"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/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#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tsullens/arc on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-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-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/tsullens/arc/Cargo.toml
[INFO] crate tsullens/arc has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing tsullens/arc against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 71d8c173dd22825c7975f50fca902ed39c3c8ca46eb81ae5adbb334a5ec5d790
[INFO] running `"docker" "start" "-a" "71d8c173dd22825c7975f50fca902ed39c3c8ca46eb81ae5adbb334a5ec5d790"`
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling serde v1.0.59
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling yaml-rust v0.4.0
[INFO] [stderr]    Compiling rand v0.5.0
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling serde-hjson v0.8.1
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling serde_json v1.0.17
[INFO] [stderr]    Compiling config v0.8.0
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 48.92s
[INFO] running `"docker" "inspect" "71d8c173dd22825c7975f50fca902ed39c3c8ca46eb81ae5adbb334a5ec5d790"`
[INFO] running `"docker" "rm" "-f" "71d8c173dd22825c7975f50fca902ed39c3c8ca46eb81ae5adbb334a5ec5d790"`
[INFO] [stdout] 71d8c173dd22825c7975f50fca902ed39c3c8ca46eb81ae5adbb334a5ec5d790
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] b92d23db649eafaa2da29807c85dd28d3a1cd5469e3046ce7dade563ab4c9c93
[INFO] running `"docker" "start" "-a" "b92d23db649eafaa2da29807c85dd28d3a1cd5469e3046ce7dade563ab4c9c93"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "b92d23db649eafaa2da29807c85dd28d3a1cd5469e3046ce7dade563ab4c9c93"`
[INFO] running `"docker" "rm" "-f" "b92d23db649eafaa2da29807c85dd28d3a1cd5469e3046ce7dade563ab4c9c93"`
[INFO] [stdout] b92d23db649eafaa2da29807c85dd28d3a1cd5469e3046ce7dade563ab4c9c93
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 71dc9a8ebddbd6d50cf5ea9ccfce5ad557b30958d189080c588c844a3eb7a4a5
[INFO] running `"docker" "start" "-a" "71dc9a8ebddbd6d50cf5ea9ccfce5ad557b30958d189080c588c844a3eb7a4a5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/arc-89bebf3fc3d1eae6
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "71dc9a8ebddbd6d50cf5ea9ccfce5ad557b30958d189080c588c844a3eb7a4a5"`
[INFO] running `"docker" "rm" "-f" "71dc9a8ebddbd6d50cf5ea9ccfce5ad557b30958d189080c588c844a3eb7a4a5"`
[INFO] [stdout] 71dc9a8ebddbd6d50cf5ea9ccfce5ad557b30958d189080c588c844a3eb7a4a5