[INFO] updating cached repository https://github.com/juliandunn/xmascard2015
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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 master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuliandunn%2Fxmascard2015" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/juliandunn/xmascard2015 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "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 /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/juliandunn/xmascard2015 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-14/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 067f2c7449a78befd88ae8a52bb7ec30438a9b93e467c33c0fd2a764c13c3a11
[INFO] running `"docker" "start" "-a" "067f2c7449a78befd88ae8a52bb7ec30438a9b93e467c33c0fd2a764c13c3a11"`
[INFO] [stderr]    Compiling time v0.1.43
[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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.30s
[INFO] running `"docker" "inspect" "067f2c7449a78befd88ae8a52bb7ec30438a9b93e467c33c0fd2a764c13c3a11"`
[INFO] running `"docker" "rm" "-f" "067f2c7449a78befd88ae8a52bb7ec30438a9b93e467c33c0fd2a764c13c3a11"`
[INFO] [stdout] 067f2c7449a78befd88ae8a52bb7ec30438a9b93e467c33c0fd2a764c13c3a11
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 91370070d93ae0b4ba6c4ea1565861e7ea33ec2b44c0f12b76a459b35f5cdbd5
[INFO] running `"docker" "start" "-a" "91370070d93ae0b4ba6c4ea1565861e7ea33ec2b44c0f12b76a459b35f5cdbd5"`
[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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "91370070d93ae0b4ba6c4ea1565861e7ea33ec2b44c0f12b76a459b35f5cdbd5"`
[INFO] running `"docker" "rm" "-f" "91370070d93ae0b4ba6c4ea1565861e7ea33ec2b44c0f12b76a459b35f5cdbd5"`
[INFO] [stdout] 91370070d93ae0b4ba6c4ea1565861e7ea33ec2b44c0f12b76a459b35f5cdbd5
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 07e01eaf77e9a61f06c4d6e751cbc5069e15e4313da5010f067cdbe1e8766b11
[INFO] running `"docker" "start" "-a" "07e01eaf77e9a61f06c4d6e751cbc5069e15e4313da5010f067cdbe1e8766b11"`
[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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/xmascard2016-0da9255f6a528807
[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" "07e01eaf77e9a61f06c4d6e751cbc5069e15e4313da5010f067cdbe1e8766b11"`
[INFO] running `"docker" "rm" "-f" "07e01eaf77e9a61f06c4d6e751cbc5069e15e4313da5010f067cdbe1e8766b11"`
[INFO] [stdout] 07e01eaf77e9a61f06c4d6e751cbc5069e15e4313da5010f067cdbe1e8766b11