[INFO] updating cached repository StoneDot/server_monitor
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/StoneDot/server_monitor
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/StoneDot/server_monitor" "work/ex/beta-1.38-1/sources/1.37.0/gh/StoneDot/server_monitor"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/StoneDot/server_monitor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/StoneDot/server_monitor" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/StoneDot/server_monitor"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/StoneDot/server_monitor'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1c2669d0cb713012e7517a6765cfd9f708b947d9
[INFO] sha for GitHub repo StoneDot/server_monitor: 1c2669d0cb713012e7517a6765cfd9f708b947d9
[INFO] validating manifest of StoneDot/server_monitor on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of StoneDot/server_monitor on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing StoneDot/server_monitor
[INFO] finished frobbing StoneDot/server_monitor
[INFO] frobbed toml for StoneDot/server_monitor written to work/ex/beta-1.38-1/sources/1.37.0/gh/StoneDot/server_monitor/Cargo.toml
[INFO] started frobbing StoneDot/server_monitor
[INFO] finished frobbing StoneDot/server_monitor
[INFO] frobbed toml for StoneDot/server_monitor written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/StoneDot/server_monitor/Cargo.toml
[INFO] crate StoneDot/server_monitor already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing StoneDot/server_monitor against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/StoneDot/server_monitor:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 50b4e71d012cc8fafeebb7d4e68091cfef71d39e87692ff66b1ef36f2c9c4f5a
[INFO] running `"docker" "start" "-a" "50b4e71d012cc8fafeebb7d4e68091cfef71d39e87692ff66b1ef36f2c9c4f5a"`
[INFO] [stderr]    Compiling either v1.3.0
[INFO] [stderr]    Compiling serde v1.0.19
[INFO] [stderr]    Compiling nom v2.2.1
[INFO] [stderr]    Compiling semver v0.6.0
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.20
[INFO] [stderr]    Compiling itertools v0.7.2
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling rustc_version v0.2.1
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]    Compiling serde_json v1.0.6
[INFO] [stderr]    Compiling server_monitor v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `elapsed`
[INFO] [stderr]    --> src/main.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |     let elapsed = cur_time.duration_since(UNIX_EPOCH)
[INFO] [stderr]     |         ^^^^^^^ help: consider prefixing with an underscore: `_elapsed`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.52s
[INFO] running `"docker" "inspect" "50b4e71d012cc8fafeebb7d4e68091cfef71d39e87692ff66b1ef36f2c9c4f5a"`
[INFO] running `"docker" "rm" "-f" "50b4e71d012cc8fafeebb7d4e68091cfef71d39e87692ff66b1ef36f2c9c4f5a"`
[INFO] [stdout] 50b4e71d012cc8fafeebb7d4e68091cfef71d39e87692ff66b1ef36f2c9c4f5a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/StoneDot/server_monitor:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] e5b5881e35eca5029aaf2d544f05141201d17e77611567bf0facada065277154
[INFO] running `"docker" "start" "-a" "e5b5881e35eca5029aaf2d544f05141201d17e77611567bf0facada065277154"`
[INFO] [stderr]    Compiling server_monitor v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `elapsed`
[INFO] [stderr]    --> src/main.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |     let elapsed = cur_time.duration_since(UNIX_EPOCH)
[INFO] [stderr]     |         ^^^^^^^ help: consider prefixing with an underscore: `_elapsed`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `"docker" "inspect" "e5b5881e35eca5029aaf2d544f05141201d17e77611567bf0facada065277154"`
[INFO] running `"docker" "rm" "-f" "e5b5881e35eca5029aaf2d544f05141201d17e77611567bf0facada065277154"`
[INFO] [stdout] e5b5881e35eca5029aaf2d544f05141201d17e77611567bf0facada065277154
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/StoneDot/server_monitor:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] cd908dd868082283b528a72b6b54e8521546d507c195aa89cfd2908713faca37
[INFO] running `"docker" "start" "-a" "cd908dd868082283b528a72b6b54e8521546d507c195aa89cfd2908713faca37"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/server_monitor-3dd3baca933aa480
[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" "cd908dd868082283b528a72b6b54e8521546d507c195aa89cfd2908713faca37"`
[INFO] running `"docker" "rm" "-f" "cd908dd868082283b528a72b6b54e8521546d507c195aa89cfd2908713faca37"`
[INFO] [stdout] cd908dd868082283b528a72b6b54e8521546d507c195aa89cfd2908713faca37