[INFO] cloning repository https://github.com/juliandunn/xmascard2015
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/juliandunn/xmascard2015" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuliandunn%2Fxmascard2015", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuliandunn%2Fxmascard2015'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 316b1c574cc9db0956f6651e8280b4a2c482e36d
[INFO] testing juliandunn/xmascard2015 against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuliandunn%2Fxmascard2015" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/juliandunn/xmascard2015 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-0/source/Cargo.toml
[INFO] crate git repo https://github.com/juliandunn/xmascard2015 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cfe3c5397b96794b4ec51464ce3115bde373a1fd43852bfc3c5d01126eabd0f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3cfe3c5397b96794b4ec51464ce3115bde373a1fd43852bfc3c5d01126eabd0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cfe3c5397b96794b4ec51464ce3115bde373a1fd43852bfc3c5d01126eabd0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cfe3c5397b96794b4ec51464ce3115bde373a1fd43852bfc3c5d01126eabd0f", kill_on_drop: false }`
[INFO] [stdout] 3cfe3c5397b96794b4ec51464ce3115bde373a1fd43852bfc3c5d01126eabd0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbc6caf50a0c38495d4bda832d20f91b56fa26c5728b5095ed67e0936ef565fa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dbc6caf50a0c38495d4bda832d20f91b56fa26c5728b5095ed67e0936ef565fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi v0.2.4
[INFO] [stderr]    Compiling kernel32-sys v0.1.4
[INFO] [stderr]    Compiling time v0.1.33
[INFO] [stderr]    Compiling xmascard2016 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/main.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 |                   { for z in 0..a-y-x+1 {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/main.rs:20:39
[INFO] [stdout]    |
[INFO] [stdout] 20 |                  print!(" ");  }  for z in
[INFO] [stdout]    |                                       ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:23:23
[INFO] [stdout]    |
[INFO] [stdout] 23 |               } } for x in 0..w/5+1 { for z in
[INFO] [stdout]    |                       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/main.rs:23:43
[INFO] [stdout]    |
[INFO] [stdout] 23 |               } } for x in 0..w/5+1 { for z in
[INFO] [stdout]    |                                           ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/main.rs:24:44
[INFO] [stdout]    |
[INFO] [stdout] 24 |              0..w/3 {  print!(" ");  } for z in
[INFO] [stdout]    |                                            ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.51s
[INFO] running `Command { std: "docker" "inspect" "dbc6caf50a0c38495d4bda832d20f91b56fa26c5728b5095ed67e0936ef565fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbc6caf50a0c38495d4bda832d20f91b56fa26c5728b5095ed67e0936ef565fa", kill_on_drop: false }`
[INFO] [stdout] dbc6caf50a0c38495d4bda832d20f91b56fa26c5728b5095ed67e0936ef565fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bccf630253d9ca43914750e7b88d6131aa301ed70354385813c978877ef7551a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bccf630253d9ca43914750e7b88d6131aa301ed70354385813c978877ef7551a", kill_on_drop: false }`
[INFO] [stderr]    Compiling xmascard2016 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/main.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 |                   { for z in 0..a-y-x+1 {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/main.rs:20:39
[INFO] [stdout]    |
[INFO] [stdout] 20 |                  print!(" ");  }  for z in
[INFO] [stdout]    |                                       ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:23:23
[INFO] [stdout]    |
[INFO] [stdout] 23 |               } } for x in 0..w/5+1 { for z in
[INFO] [stdout]    |                       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/main.rs:23:43
[INFO] [stdout]    |
[INFO] [stdout] 23 |               } } for x in 0..w/5+1 { for z in
[INFO] [stdout]    |                                           ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/main.rs:24:44
[INFO] [stdout]    |
[INFO] [stdout] 24 |              0..w/3 {  print!(" ");  } for z in
[INFO] [stdout]    |                                            ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "bccf630253d9ca43914750e7b88d6131aa301ed70354385813c978877ef7551a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bccf630253d9ca43914750e7b88d6131aa301ed70354385813c978877ef7551a", kill_on_drop: false }`
[INFO] [stdout] bccf630253d9ca43914750e7b88d6131aa301ed70354385813c978877ef7551a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5f21966f43a7def9d4f7a23c91eb348e81800a6059f0b2f84ca62c715a2e5f4d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5f21966f43a7def9d4f7a23c91eb348e81800a6059f0b2f84ca62c715a2e5f4d", kill_on_drop: false }`
[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: `xmascard2016` (bin "xmascard2016" test) generated 5 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/xmascard2016-8e6be17d075d3818)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5f21966f43a7def9d4f7a23c91eb348e81800a6059f0b2f84ca62c715a2e5f4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f21966f43a7def9d4f7a23c91eb348e81800a6059f0b2f84ca62c715a2e5f4d", kill_on_drop: false }`
[INFO] [stdout] 5f21966f43a7def9d4f7a23c91eb348e81800a6059f0b2f84ca62c715a2e5f4d