[INFO] updating cached repository UnHumbleBen/workout
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/UnHumbleBen/workout
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/UnHumbleBen/workout" "work/ex/beta-1.37-6/sources/1.36.0/gh/UnHumbleBen/workout"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/UnHumbleBen/workout'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/UnHumbleBen/workout" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/UnHumbleBen/workout"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/UnHumbleBen/workout'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fcda8c3cd6059d83e7e62f0692871cf9dd3460dc
[INFO] sha for GitHub repo UnHumbleBen/workout: fcda8c3cd6059d83e7e62f0692871cf9dd3460dc
[INFO] validating manifest of UnHumbleBen/workout 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 UnHumbleBen/workout 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 UnHumbleBen/workout
[INFO] finished frobbing UnHumbleBen/workout
[INFO] frobbed toml for UnHumbleBen/workout written to work/ex/beta-1.37-6/sources/1.36.0/gh/UnHumbleBen/workout/Cargo.toml
[INFO] started frobbing UnHumbleBen/workout
[INFO] finished frobbing UnHumbleBen/workout
[INFO] frobbed toml for UnHumbleBen/workout written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/UnHumbleBen/workout/Cargo.toml
[INFO] crate UnHumbleBen/workout 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 UnHumbleBen/workout against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/UnHumbleBen/workout:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 162d3c215fb784df0b6bb2faf01a6bb2dccb3c0bc91b330694e8f7dfde7edf5b
[INFO] running `"docker" "start" "-a" "162d3c215fb784df0b6bb2faf01a6bb2dccb3c0bc91b330694e8f7dfde7edf5b"`
[INFO] [stderr]    Compiling workout v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stderr]  --> src/main.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `"docker" "inspect" "162d3c215fb784df0b6bb2faf01a6bb2dccb3c0bc91b330694e8f7dfde7edf5b"`
[INFO] running `"docker" "rm" "-f" "162d3c215fb784df0b6bb2faf01a6bb2dccb3c0bc91b330694e8f7dfde7edf5b"`
[INFO] [stdout] 162d3c215fb784df0b6bb2faf01a6bb2dccb3c0bc91b330694e8f7dfde7edf5b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/UnHumbleBen/workout:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7295eed46ef72bec2e4f226972e378d1448483903ba0fb3404498fe9a041da9e
[INFO] running `"docker" "start" "-a" "7295eed46ef72bec2e4f226972e378d1448483903ba0fb3404498fe9a041da9e"`
[INFO] [stderr]    Compiling workout v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stderr]  --> src/main.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "7295eed46ef72bec2e4f226972e378d1448483903ba0fb3404498fe9a041da9e"`
[INFO] running `"docker" "rm" "-f" "7295eed46ef72bec2e4f226972e378d1448483903ba0fb3404498fe9a041da9e"`
[INFO] [stdout] 7295eed46ef72bec2e4f226972e378d1448483903ba0fb3404498fe9a041da9e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/UnHumbleBen/workout:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] e8fc7284b8e0fe8e8f9337f3059de6d7fc2fe447040cf67399526be9e118ea21
[INFO] running `"docker" "start" "-a" "e8fc7284b8e0fe8e8f9337f3059de6d7fc2fe447040cf67399526be9e118ea21"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/workout-f8f030de2b8e20a8
[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" "e8fc7284b8e0fe8e8f9337f3059de6d7fc2fe447040cf67399526be9e118ea21"`
[INFO] running `"docker" "rm" "-f" "e8fc7284b8e0fe8e8f9337f3059de6d7fc2fe447040cf67399526be9e118ea21"`
[INFO] [stdout] e8fc7284b8e0fe8e8f9337f3059de6d7fc2fe447040cf67399526be9e118ea21