[INFO] cloning repository ChristianBell1995/rust_functions
[INFO] running `"git" "clone" "--bare" "git://github.com/ChristianBell1995/rust_functions.git" "work/cache/sources/gh/ChristianBell1995/rust_functions"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/ChristianBell1995/rust_functions'...
[INFO] running `"git" "clone" "work/cache/sources/gh/ChristianBell1995/rust_functions" "work/ex/beta-1.37-6/sources/1.36.0/gh/ChristianBell1995/rust_functions"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ChristianBell1995/rust_functions'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ChristianBell1995/rust_functions" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ChristianBell1995/rust_functions"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ChristianBell1995/rust_functions'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2a7e287cc4842ab8dab40352c62c4f1e5dc893c4
[INFO] sha for GitHub repo ChristianBell1995/rust_functions: 2a7e287cc4842ab8dab40352c62c4f1e5dc893c4
[INFO] validating manifest of ChristianBell1995/rust_functions 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 ChristianBell1995/rust_functions 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 ChristianBell1995/rust_functions
[INFO] finished frobbing ChristianBell1995/rust_functions
[INFO] frobbed toml for ChristianBell1995/rust_functions written to work/ex/beta-1.37-6/sources/1.36.0/gh/ChristianBell1995/rust_functions/Cargo.toml
[INFO] started frobbing ChristianBell1995/rust_functions
[INFO] finished frobbing ChristianBell1995/rust_functions
[INFO] frobbed toml for ChristianBell1995/rust_functions written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ChristianBell1995/rust_functions/Cargo.toml
[INFO] crate ChristianBell1995/rust_functions 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 ChristianBell1995/rust_functions 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/ChristianBell1995/rust_functions:/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] 5168501a4f8cdfb4f722f9f74b393bd0bfd989b1251fad457091076414a1cccd
[INFO] running `"docker" "start" "-a" "5168501a4f8cdfb4f722f9f74b393bd0bfd989b1251fad457091076414a1cccd"`
[INFO] [stderr]    Compiling rust_functions v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]  --> src/main.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let x = 5;
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `"docker" "inspect" "5168501a4f8cdfb4f722f9f74b393bd0bfd989b1251fad457091076414a1cccd"`
[INFO] running `"docker" "rm" "-f" "5168501a4f8cdfb4f722f9f74b393bd0bfd989b1251fad457091076414a1cccd"`
[INFO] [stdout] 5168501a4f8cdfb4f722f9f74b393bd0bfd989b1251fad457091076414a1cccd
[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/ChristianBell1995/rust_functions:/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] 274e165cea91ffa949eb05211d38d1d12ade4fd5db126df6ebdb06a53cdbbe75
[INFO] running `"docker" "start" "-a" "274e165cea91ffa949eb05211d38d1d12ade4fd5db126df6ebdb06a53cdbbe75"`
[INFO] [stderr]    Compiling rust_functions v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]  --> src/main.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let x = 5;
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `"docker" "inspect" "274e165cea91ffa949eb05211d38d1d12ade4fd5db126df6ebdb06a53cdbbe75"`
[INFO] running `"docker" "rm" "-f" "274e165cea91ffa949eb05211d38d1d12ade4fd5db126df6ebdb06a53cdbbe75"`
[INFO] [stdout] 274e165cea91ffa949eb05211d38d1d12ade4fd5db126df6ebdb06a53cdbbe75
[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/ChristianBell1995/rust_functions:/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] 637554b19ce2a3f69754339c0ef0cc4347d345d2d06be642b8f58f9e1e8486be
[INFO] running `"docker" "start" "-a" "637554b19ce2a3f69754339c0ef0cc4347d345d2d06be642b8f58f9e1e8486be"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_functions-b6540ff9860d9d8f
[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" "637554b19ce2a3f69754339c0ef0cc4347d345d2d06be642b8f58f9e1e8486be"`
[INFO] running `"docker" "rm" "-f" "637554b19ce2a3f69754339c0ef0cc4347d345d2d06be642b8f58f9e1e8486be"`
[INFO] [stdout] 637554b19ce2a3f69754339c0ef0cc4347d345d2d06be642b8f58f9e1e8486be