[INFO] updating cached repository farhanpatwary/cool_project
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/farhanpatwary/cool_project
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/farhanpatwary/cool_project" "work/ex/beta-1.38-1/sources/1.37.0/gh/farhanpatwary/cool_project"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/farhanpatwary/cool_project'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/farhanpatwary/cool_project" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/farhanpatwary/cool_project"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/farhanpatwary/cool_project'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 78c01dde5145cc6e42069e61a5f02bb0663ff9bd
[INFO] sha for GitHub repo farhanpatwary/cool_project: 78c01dde5145cc6e42069e61a5f02bb0663ff9bd
[INFO] validating manifest of farhanpatwary/cool_project 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 farhanpatwary/cool_project 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 farhanpatwary/cool_project
[INFO] finished frobbing farhanpatwary/cool_project
[INFO] frobbed toml for farhanpatwary/cool_project written to work/ex/beta-1.38-1/sources/1.37.0/gh/farhanpatwary/cool_project/Cargo.toml
[INFO] started frobbing farhanpatwary/cool_project
[INFO] finished frobbing farhanpatwary/cool_project
[INFO] frobbed toml for farhanpatwary/cool_project written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/farhanpatwary/cool_project/Cargo.toml
[INFO] crate farhanpatwary/cool_project 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 farhanpatwary/cool_project against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/farhanpatwary/cool_project:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] c0a3472e385a1e3e2182b97b970d772ee618da566191c5df59663230e05fe7e3
[INFO] running `"docker" "start" "-a" "c0a3472e385a1e3e2182b97b970d772ee618da566191c5df59663230e05fe7e3"`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling vob v2.0.0
[INFO] [stderr]    Compiling cool_project v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use] extern crate vob;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     for mut x in 0..v1.len(){
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.28s
[INFO] running `"docker" "inspect" "c0a3472e385a1e3e2182b97b970d772ee618da566191c5df59663230e05fe7e3"`
[INFO] running `"docker" "rm" "-f" "c0a3472e385a1e3e2182b97b970d772ee618da566191c5df59663230e05fe7e3"`
[INFO] [stdout] c0a3472e385a1e3e2182b97b970d772ee618da566191c5df59663230e05fe7e3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/farhanpatwary/cool_project:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] df023dec9df6e319acd005f78f70d73d240cea469d70049795540449ae647a6b
[INFO] running `"docker" "start" "-a" "df023dec9df6e319acd005f78f70d73d240cea469d70049795540449ae647a6b"`
[INFO] [stderr]    Compiling cool_project v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use] extern crate vob;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     for mut x in 0..v1.len(){
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `"docker" "inspect" "df023dec9df6e319acd005f78f70d73d240cea469d70049795540449ae647a6b"`
[INFO] running `"docker" "rm" "-f" "df023dec9df6e319acd005f78f70d73d240cea469d70049795540449ae647a6b"`
[INFO] [stdout] df023dec9df6e319acd005f78f70d73d240cea469d70049795540449ae647a6b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/farhanpatwary/cool_project:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 16b94098b7c9e46575c301afefb05ffde0d143b164a274ed305a015de0f98332
[INFO] running `"docker" "start" "-a" "16b94098b7c9e46575c301afefb05ffde0d143b164a274ed305a015de0f98332"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cool_project-c1a1c5de8d76d133
[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" "16b94098b7c9e46575c301afefb05ffde0d143b164a274ed305a015de0f98332"`
[INFO] running `"docker" "rm" "-f" "16b94098b7c9e46575c301afefb05ffde0d143b164a274ed305a015de0f98332"`
[INFO] [stdout] 16b94098b7c9e46575c301afefb05ffde0d143b164a274ed305a015de0f98332