[INFO] updating cached repository wdv4758h/rust_perf_bench
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wdv4758h/rust_perf_bench
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wdv4758h/rust_perf_bench" "work/ex/beta-1.38-1/sources/1.37.0/gh/wdv4758h/rust_perf_bench"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/wdv4758h/rust_perf_bench'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wdv4758h/rust_perf_bench" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wdv4758h/rust_perf_bench"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wdv4758h/rust_perf_bench'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 56f5b231308c25116bd9d3933576355da5ea5835
[INFO] sha for GitHub repo wdv4758h/rust_perf_bench: 56f5b231308c25116bd9d3933576355da5ea5835
[INFO] validating manifest of wdv4758h/rust_perf_bench 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 wdv4758h/rust_perf_bench 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 wdv4758h/rust_perf_bench
[INFO] finished frobbing wdv4758h/rust_perf_bench
[INFO] frobbed toml for wdv4758h/rust_perf_bench written to work/ex/beta-1.38-1/sources/1.37.0/gh/wdv4758h/rust_perf_bench/Cargo.toml
[INFO] started frobbing wdv4758h/rust_perf_bench
[INFO] finished frobbing wdv4758h/rust_perf_bench
[INFO] frobbed toml for wdv4758h/rust_perf_bench written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wdv4758h/rust_perf_bench/Cargo.toml
[INFO] crate wdv4758h/rust_perf_bench 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wdv4758h/rust_perf_bench/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 wdv4758h/rust_perf_bench 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wdv4758h/rust_perf_bench:/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] 18b0b8c2777f0ee8828271849c57715ee1654a901ba426039422b40587a7e2bd
[INFO] running `"docker" "start" "-a" "18b0b8c2777f0ee8828271849c57715ee1654a901ba426039422b40587a7e2bd"`
[INFO] [stderr]    Compiling rust_perf_bench v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `"docker" "inspect" "18b0b8c2777f0ee8828271849c57715ee1654a901ba426039422b40587a7e2bd"`
[INFO] running `"docker" "rm" "-f" "18b0b8c2777f0ee8828271849c57715ee1654a901ba426039422b40587a7e2bd"`
[INFO] [stdout] 18b0b8c2777f0ee8828271849c57715ee1654a901ba426039422b40587a7e2bd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wdv4758h/rust_perf_bench:/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] 9009334a0fdd50f6152af1da146f8edafa4062ec6d5b42f26de6aa51b5da4d88
[INFO] running `"docker" "start" "-a" "9009334a0fdd50f6152af1da146f8edafa4062ec6d5b42f26de6aa51b5da4d88"`
[INFO] [stderr]    Compiling rust_perf_bench v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "9009334a0fdd50f6152af1da146f8edafa4062ec6d5b42f26de6aa51b5da4d88"`
[INFO] running `"docker" "rm" "-f" "9009334a0fdd50f6152af1da146f8edafa4062ec6d5b42f26de6aa51b5da4d88"`
[INFO] [stdout] 9009334a0fdd50f6152af1da146f8edafa4062ec6d5b42f26de6aa51b5da4d88
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wdv4758h/rust_perf_bench:/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] a6cad037e9d86560709fd6eff6ed055763a60e3c8bf9947ba54fab9aba27328e
[INFO] running `"docker" "start" "-a" "a6cad037e9d86560709fd6eff6ed055763a60e3c8bf9947ba54fab9aba27328e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_perf_bench-daa090ae34bad175
[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" "a6cad037e9d86560709fd6eff6ed055763a60e3c8bf9947ba54fab9aba27328e"`
[INFO] running `"docker" "rm" "-f" "a6cad037e9d86560709fd6eff6ed055763a60e3c8bf9947ba54fab9aba27328e"`
[INFO] [stdout] a6cad037e9d86560709fd6eff6ed055763a60e3c8bf9947ba54fab9aba27328e