[INFO] updating cached repository theOver1ord/mendel
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/theOver1ord/mendel
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/theOver1ord/mendel" "work/ex/beta-1.37-6/sources/1.36.0/gh/theOver1ord/mendel"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/theOver1ord/mendel'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/theOver1ord/mendel" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/theOver1ord/mendel"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/theOver1ord/mendel'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 745c13d2f9fde427c4a8af56726e44934972fb79
[INFO] sha for GitHub repo theOver1ord/mendel: 745c13d2f9fde427c4a8af56726e44934972fb79
[INFO] validating manifest of theOver1ord/mendel 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 theOver1ord/mendel 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 theOver1ord/mendel
[INFO] finished frobbing theOver1ord/mendel
[INFO] frobbed toml for theOver1ord/mendel written to work/ex/beta-1.37-6/sources/1.36.0/gh/theOver1ord/mendel/Cargo.toml
[INFO] started frobbing theOver1ord/mendel
[INFO] finished frobbing theOver1ord/mendel
[INFO] frobbed toml for theOver1ord/mendel written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/theOver1ord/mendel/Cargo.toml
[INFO] crate theOver1ord/mendel 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 theOver1ord/mendel 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/theOver1ord/mendel:/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] dd4cd9497d8ce004c9335565aceb50053c3c111015ffd26aa57cd779d1c3729e
[INFO] running `"docker" "start" "-a" "dd4cd9497d8ce004c9335565aceb50053c3c111015ffd26aa57cd779d1c3729e"`
[INFO] [stderr]    Compiling mendel v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     for i in 0..k {
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     for i in 0..m {
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     for i in 0..n {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "dd4cd9497d8ce004c9335565aceb50053c3c111015ffd26aa57cd779d1c3729e"`
[INFO] running `"docker" "rm" "-f" "dd4cd9497d8ce004c9335565aceb50053c3c111015ffd26aa57cd779d1c3729e"`
[INFO] [stdout] dd4cd9497d8ce004c9335565aceb50053c3c111015ffd26aa57cd779d1c3729e
[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/theOver1ord/mendel:/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] 743935d9f8b7fbe7a5359ecc31cdb793faae6f16fce6ca7f92ac4f4a658c2323
[INFO] running `"docker" "start" "-a" "743935d9f8b7fbe7a5359ecc31cdb793faae6f16fce6ca7f92ac4f4a658c2323"`
[INFO] [stderr]    Compiling mendel v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     for i in 0..k {
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     for i in 0..m {
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     for i in 0..n {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "743935d9f8b7fbe7a5359ecc31cdb793faae6f16fce6ca7f92ac4f4a658c2323"`
[INFO] running `"docker" "rm" "-f" "743935d9f8b7fbe7a5359ecc31cdb793faae6f16fce6ca7f92ac4f4a658c2323"`
[INFO] [stdout] 743935d9f8b7fbe7a5359ecc31cdb793faae6f16fce6ca7f92ac4f4a658c2323
[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/theOver1ord/mendel:/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] 14e495121cac2c8cbacbb43531b37a25431eeca21601e3cee10a026d1c0bfc0e
[INFO] running `"docker" "start" "-a" "14e495121cac2c8cbacbb43531b37a25431eeca21601e3cee10a026d1c0bfc0e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mendel-f1611361a9b19fbb
[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" "14e495121cac2c8cbacbb43531b37a25431eeca21601e3cee10a026d1c0bfc0e"`
[INFO] running `"docker" "rm" "-f" "14e495121cac2c8cbacbb43531b37a25431eeca21601e3cee10a026d1c0bfc0e"`
[INFO] [stdout] 14e495121cac2c8cbacbb43531b37a25431eeca21601e3cee10a026d1c0bfc0e