[INFO] updating cached repository sbh123/labkv
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sbh123/labkv
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sbh123/labkv" "work/ex/beta-1.37-6/sources/1.36.0/gh/sbh123/labkv"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/sbh123/labkv'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sbh123/labkv" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sbh123/labkv"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sbh123/labkv'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3400008d059a99801fe2164ca54dab09fb56b9a6
[INFO] sha for GitHub repo sbh123/labkv: 3400008d059a99801fe2164ca54dab09fb56b9a6
[INFO] validating manifest of sbh123/labkv on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sbh123/labkv on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sbh123/labkv
[INFO] finished frobbing sbh123/labkv
[INFO] frobbed toml for sbh123/labkv written to work/ex/beta-1.37-6/sources/1.36.0/gh/sbh123/labkv/Cargo.toml
[INFO] started frobbing sbh123/labkv
[INFO] finished frobbing sbh123/labkv
[INFO] frobbed toml for sbh123/labkv written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sbh123/labkv/Cargo.toml
[INFO] crate sbh123/labkv already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing sbh123/labkv against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/sbh123/labkv:/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 08f8d127bf61303f92f66a13172ac3fb9c4c2847cd2669cc36c7fe25bd6e7fb6
[INFO] running `"docker" "start" "-a" "08f8d127bf61303f92f66a13172ac3fb9c4c2847cd2669cc36c7fe25bd6e7fb6"`
[INFO] [stderr]    Compiling labkv v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/raft.rs:689:25
[INFO] [stderr]     |
[INFO] [stderr] 689 |                     let mut raft = raft.lock().unwrap();
[INFO] [stderr]     |                         ----^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `servername`
[INFO] [stderr]    --> src/rpc.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 |     servername: String,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.32s
[INFO] running `"docker" "inspect" "08f8d127bf61303f92f66a13172ac3fb9c4c2847cd2669cc36c7fe25bd6e7fb6"`
[INFO] running `"docker" "rm" "-f" "08f8d127bf61303f92f66a13172ac3fb9c4c2847cd2669cc36c7fe25bd6e7fb6"`
[INFO] [stdout] 08f8d127bf61303f92f66a13172ac3fb9c4c2847cd2669cc36c7fe25bd6e7fb6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/sbh123/labkv:/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b2d546af865140714631c6030bfe41c59214d33fa90488e9040f381243112248
[INFO] running `"docker" "start" "-a" "b2d546af865140714631c6030bfe41c59214d33fa90488e9040f381243112248"`
[INFO] [stderr]    Compiling labkv v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/raft.rs:689:25
[INFO] [stderr]     |
[INFO] [stderr] 689 |                     let mut raft = raft.lock().unwrap();
[INFO] [stderr]     |                         ----^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `servername`
[INFO] [stderr]    --> src/rpc.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 |     servername: String,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.33s
[INFO] running `"docker" "inspect" "b2d546af865140714631c6030bfe41c59214d33fa90488e9040f381243112248"`
[INFO] running `"docker" "rm" "-f" "b2d546af865140714631c6030bfe41c59214d33fa90488e9040f381243112248"`
[INFO] [stdout] b2d546af865140714631c6030bfe41c59214d33fa90488e9040f381243112248
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/sbh123/labkv:/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] f483393da8d48dba1e7941eef884ddf8be50136083c1db91ef0d2dafd732a7af
[INFO] running `"docker" "start" "-a" "f483393da8d48dba1e7941eef884ddf8be50136083c1db91ef0d2dafd732a7af"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/labkv-62c1cb58129f9991
[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] [stderr]      Running /opt/crater/target/debug/deps/labkv-1d80a413d69f1194
[INFO] [stderr]    Doc-tests labkv
[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] [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" "f483393da8d48dba1e7941eef884ddf8be50136083c1db91ef0d2dafd732a7af"`
[INFO] running `"docker" "rm" "-f" "f483393da8d48dba1e7941eef884ddf8be50136083c1db91ef0d2dafd732a7af"`
[INFO] [stdout] f483393da8d48dba1e7941eef884ddf8be50136083c1db91ef0d2dafd732a7af