[INFO] updating cached repository UseK/mandelbrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/UseK/mandelbrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/UseK/mandelbrot" "work/ex/beta-1.38-1/sources/1.37.0/gh/UseK/mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/UseK/mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/UseK/mandelbrot" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/UseK/mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/UseK/mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0a8c9e4f7cd3a97bb0a4901c0789adfd5372cac0
[INFO] sha for GitHub repo UseK/mandelbrot: 0a8c9e4f7cd3a97bb0a4901c0789adfd5372cac0
[INFO] validating manifest of UseK/mandelbrot 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 UseK/mandelbrot 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 UseK/mandelbrot
[INFO] finished frobbing UseK/mandelbrot
[INFO] frobbed toml for UseK/mandelbrot written to work/ex/beta-1.38-1/sources/1.37.0/gh/UseK/mandelbrot/Cargo.toml
[INFO] started frobbing UseK/mandelbrot
[INFO] finished frobbing UseK/mandelbrot
[INFO] frobbed toml for UseK/mandelbrot written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/UseK/mandelbrot/Cargo.toml
[INFO] crate UseK/mandelbrot 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 UseK/mandelbrot 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/UseK/mandelbrot:/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] df2f81d867e7ac2446f514a5d388fa6c6febe63a6e784b40d2d4be3aa8ac7616
[INFO] running `"docker" "start" "-a" "df2f81d867e7ac2446f514a5d388fa6c6febe63a6e784b40d2d4be3aa8ac7616"`
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.31s
[INFO] running `"docker" "inspect" "df2f81d867e7ac2446f514a5d388fa6c6febe63a6e784b40d2d4be3aa8ac7616"`
[INFO] running `"docker" "rm" "-f" "df2f81d867e7ac2446f514a5d388fa6c6febe63a6e784b40d2d4be3aa8ac7616"`
[INFO] [stdout] df2f81d867e7ac2446f514a5d388fa6c6febe63a6e784b40d2d4be3aa8ac7616
[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/UseK/mandelbrot:/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] f1501b7c4ee5e57a405e2264d7f3c2d953cde91a0a2c48f0e9d02b0dc9177a79
[INFO] running `"docker" "start" "-a" "f1501b7c4ee5e57a405e2264d7f3c2d953cde91a0a2c48f0e9d02b0dc9177a79"`
[INFO] [stderr]    Compiling mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "f1501b7c4ee5e57a405e2264d7f3c2d953cde91a0a2c48f0e9d02b0dc9177a79"`
[INFO] running `"docker" "rm" "-f" "f1501b7c4ee5e57a405e2264d7f3c2d953cde91a0a2c48f0e9d02b0dc9177a79"`
[INFO] [stdout] f1501b7c4ee5e57a405e2264d7f3c2d953cde91a0a2c48f0e9d02b0dc9177a79
[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/UseK/mandelbrot:/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] 40896fa295a491fa809483fe268e9bb70ff1fe60a5f269f6700143b3baea9262
[INFO] running `"docker" "start" "-a" "40896fa295a491fa809483fe268e9bb70ff1fe60a5f269f6700143b3baea9262"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mandelbrot-819142a2a05633f4
[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" "40896fa295a491fa809483fe268e9bb70ff1fe60a5f269f6700143b3baea9262"`
[INFO] running `"docker" "rm" "-f" "40896fa295a491fa809483fe268e9bb70ff1fe60a5f269f6700143b3baea9262"`
[INFO] [stdout] 40896fa295a491fa809483fe268e9bb70ff1fe60a5f269f6700143b3baea9262