[INFO] updating cached repository https://github.com/serayuzgur/chainake
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c5693bc2e3c41494c0b1c603737e0bf6a9e65787
[INFO] testing serayuzgur/chainake against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fserayuzgur%2Fchainake" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/serayuzgur/chainake on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/serayuzgur/chainake
[INFO] finished tweaking git repo https://github.com/serayuzgur/chainake
[INFO] tweaked toml for git repo https://github.com/serayuzgur/chainake written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/serayuzgur/chainake already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff86d3bba6a634c6dc1cc17086966c5623fab272fb7cdadd4b769ecb39a44180
[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" "ff86d3bba6a634c6dc1cc17086966c5623fab272fb7cdadd4b769ecb39a44180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff86d3bba6a634c6dc1cc17086966c5623fab272fb7cdadd4b769ecb39a44180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff86d3bba6a634c6dc1cc17086966c5623fab272fb7cdadd4b769ecb39a44180", kill_on_drop: false }`
[INFO] [stdout] ff86d3bba6a634c6dc1cc17086966c5623fab272fb7cdadd4b769ecb39a44180
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ab5a0c4b8d5622b1d25ee9beb7c26f16f1f45a030e575ab657703c5caef2094
[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" "6ab5a0c4b8d5622b1d25ee9beb7c26f16f1f45a030e575ab657703c5caef2094", kill_on_drop: false }`
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling chainake v0.0.1-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `difficulty`
[INFO] [stdout]   --> src/main.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn play( &mut self, difficulty: usize) {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         stdout.flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `Command { std: "docker" "inspect" "6ab5a0c4b8d5622b1d25ee9beb7c26f16f1f45a030e575ab657703c5caef2094", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ab5a0c4b8d5622b1d25ee9beb7c26f16f1f45a030e575ab657703c5caef2094", kill_on_drop: false }`
[INFO] [stdout] 6ab5a0c4b8d5622b1d25ee9beb7c26f16f1f45a030e575ab657703c5caef2094
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8877a983d11b2178f0b66cb3f268c6018898b81cdd881b84b903373e7f967081
[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" "8877a983d11b2178f0b66cb3f268c6018898b81cdd881b84b903373e7f967081", kill_on_drop: false }`
[INFO] [stderr]    Compiling chainake v0.0.1-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `difficulty`
[INFO] [stdout]   --> src/main.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn play( &mut self, difficulty: usize) {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         stdout.flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "8877a983d11b2178f0b66cb3f268c6018898b81cdd881b84b903373e7f967081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8877a983d11b2178f0b66cb3f268c6018898b81cdd881b84b903373e7f967081", kill_on_drop: false }`
[INFO] [stdout] 8877a983d11b2178f0b66cb3f268c6018898b81cdd881b84b903373e7f967081
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 285368631ad743fed86afe54ea16834a5539594f1435c39147f8207528c90cf3
[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" "285368631ad743fed86afe54ea16834a5539594f1435c39147f8207528c90cf3", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `difficulty`
[INFO] [stderr]   --> src/main.rs:29:25
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn play( &mut self, difficulty: usize) {
[INFO] [stderr]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         stdout.flush();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chainake-aa261749971e2574
[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 `Command { std: "docker" "inspect" "285368631ad743fed86afe54ea16834a5539594f1435c39147f8207528c90cf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "285368631ad743fed86afe54ea16834a5539594f1435c39147f8207528c90cf3", kill_on_drop: false }`
[INFO] [stdout] 285368631ad743fed86afe54ea16834a5539594f1435c39147f8207528c90cf3