[INFO] updating cached repository https://github.com/juliandunn/xmascard2015
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 316b1c574cc9db0956f6651e8280b4a2c482e36d
[INFO] testing juliandunn/xmascard2015 against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuliandunn%2Fxmascard2015" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/juliandunn/xmascard2015 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/juliandunn/xmascard2015
[INFO] finished tweaking git repo https://github.com/juliandunn/xmascard2015
[INFO] tweaked toml for git repo https://github.com/juliandunn/xmascard2015 written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/juliandunn/xmascard2015 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /big/crater/work/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] df268149d1f5f83fad787dc1bcae383c651e94ef03b588f36b4b6e2461c0d361
[INFO] running `"docker" "start" "-a" "df268149d1f5f83fad787dc1bcae383c651e94ef03b588f36b4b6e2461c0d361"`
[INFO] [stderr]    Compiling xmascard2016 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/main.rs:19:25
[INFO] [stderr]    |
[INFO] [stderr] 19 |                   { for z in 0..a-y-x+1 {
[INFO] [stderr]    |                         ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/main.rs:20:39
[INFO] [stderr]    |
[INFO] [stderr] 20 |                  print!(" ");  }  for z in
[INFO] [stderr]    |                                       ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:23:23
[INFO] [stderr]    |
[INFO] [stderr] 23 |               } } for x in 0..w/5+1 { for z in
[INFO] [stderr]    |                       ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/main.rs:23:43
[INFO] [stderr]    |
[INFO] [stderr] 23 |               } } for x in 0..w/5+1 { for z in
[INFO] [stderr]    |                                           ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/main.rs:24:44
[INFO] [stderr]    |
[INFO] [stderr] 24 |              0..w/3 {  print!(" ");  } for z in
[INFO] [stderr]    |                                            ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "df268149d1f5f83fad787dc1bcae383c651e94ef03b588f36b4b6e2461c0d361"`
[INFO] running `"docker" "rm" "-f" "df268149d1f5f83fad787dc1bcae383c651e94ef03b588f36b4b6e2461c0d361"`
[INFO] [stdout] df268149d1f5f83fad787dc1bcae383c651e94ef03b588f36b4b6e2461c0d361
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] dc1f987436f5a1f9b131660a056f59fd299e3045b3ab57007b4218a12bb60581
[INFO] running `"docker" "start" "-a" "dc1f987436f5a1f9b131660a056f59fd299e3045b3ab57007b4218a12bb60581"`
[INFO] [stderr]    Compiling xmascard2016 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/main.rs:19:25
[INFO] [stderr]    |
[INFO] [stderr] 19 |                   { for z in 0..a-y-x+1 {
[INFO] [stderr]    |                         ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/main.rs:20:39
[INFO] [stderr]    |
[INFO] [stderr] 20 |                  print!(" ");  }  for z in
[INFO] [stderr]    |                                       ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:23:23
[INFO] [stderr]    |
[INFO] [stderr] 23 |               } } for x in 0..w/5+1 { for z in
[INFO] [stderr]    |                       ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/main.rs:23:43
[INFO] [stderr]    |
[INFO] [stderr] 23 |               } } for x in 0..w/5+1 { for z in
[INFO] [stderr]    |                                           ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/main.rs:24:44
[INFO] [stderr]    |
[INFO] [stderr] 24 |              0..w/3 {  print!(" ");  } for z in
[INFO] [stderr]    |                                            ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "dc1f987436f5a1f9b131660a056f59fd299e3045b3ab57007b4218a12bb60581"`
[INFO] running `"docker" "rm" "-f" "dc1f987436f5a1f9b131660a056f59fd299e3045b3ab57007b4218a12bb60581"`
[INFO] [stdout] dc1f987436f5a1f9b131660a056f59fd299e3045b3ab57007b4218a12bb60581
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 61dfa60118cc462bda1b8a020a2e5407bcd6e583b809bbb7c58586260682f87f
[INFO] running `"docker" "start" "-a" "61dfa60118cc462bda1b8a020a2e5407bcd6e583b809bbb7c58586260682f87f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/xmascard2016-23d0c25a7e140547
[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" "61dfa60118cc462bda1b8a020a2e5407bcd6e583b809bbb7c58586260682f87f"`
[INFO] running `"docker" "rm" "-f" "61dfa60118cc462bda1b8a020a2e5407bcd6e583b809bbb7c58586260682f87f"`
[INFO] [stdout] 61dfa60118cc462bda1b8a020a2e5407bcd6e583b809bbb7c58586260682f87f