[INFO] cloning repository https://github.com/SliverCicada/toy-of-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SliverCicada/toy-of-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSliverCicada%2Ftoy-of-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSliverCicada%2Ftoy-of-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d34aa23740d3012fd64d29821597bff02c70026
[INFO] testing SliverCicada/toy-of-rust against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSliverCicada%2Ftoy-of-rust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SliverCicada/toy-of-rust on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SliverCicada/toy-of-rust
[INFO] finished tweaking git repo https://github.com/SliverCicada/toy-of-rust
[INFO] tweaked toml for git repo https://github.com/SliverCicada/toy-of-rust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/SliverCicada/toy-of-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcba07da9996466f827aa2d50da94ec278dc4880af0b6a91663ff951f574a982
[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" "bcba07da9996466f827aa2d50da94ec278dc4880af0b6a91663ff951f574a982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcba07da9996466f827aa2d50da94ec278dc4880af0b6a91663ff951f574a982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcba07da9996466f827aa2d50da94ec278dc4880af0b6a91663ff951f574a982", kill_on_drop: false }`
[INFO] [stdout] bcba07da9996466f827aa2d50da94ec278dc4880af0b6a91663ff951f574a982
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14c4ab6279b2e39350f43b83b4f5e15c8f70c2425d398f58eac232e0c9eba077
[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" "14c4ab6279b2e39350f43b83b4f5e15c8f70c2425d398f58eac232e0c9eba077", kill_on_drop: false }`
[INFO] [stderr]    Compiling toy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `str1`
[INFO] [stdout]    --> src/main.rs:347:9
[INFO] [stdout]     |
[INFO] [stdout] 347 |     let str1 = "产不及中人，而欲齐驱金谷，世颇多捷径，而独株守於陵，如此则贫富舛矣".to_string();
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str2`
[INFO] [stdout]    --> src/main.rs:348:9
[INFO] [stdout]     |
[INFO] [stdout] 348 |     let str2 = "博弈摴蒱，则不知胜负，啜茶尝水，则能辨渑淄，如此则智愚杂矣".to_string();
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "14c4ab6279b2e39350f43b83b4f5e15c8f70c2425d398f58eac232e0c9eba077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14c4ab6279b2e39350f43b83b4f5e15c8f70c2425d398f58eac232e0c9eba077", kill_on_drop: false }`
[INFO] [stdout] 14c4ab6279b2e39350f43b83b4f5e15c8f70c2425d398f58eac232e0c9eba077
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd6f2d4c1c3922eaf47aaf565d50a13f4609a4ef5ba565ee327e1d26664ca9fa
[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" "fd6f2d4c1c3922eaf47aaf565d50a13f4609a4ef5ba565ee327e1d26664ca9fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling toy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `str1`
[INFO] [stdout]    --> src/main.rs:347:9
[INFO] [stdout]     |
[INFO] [stdout] 347 |     let str1 = "产不及中人，而欲齐驱金谷，世颇多捷径，而独株守於陵，如此则贫富舛矣".to_string();
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str2`
[INFO] [stdout]    --> src/main.rs:348:9
[INFO] [stdout]     |
[INFO] [stdout] 348 |     let str2 = "博弈摴蒱，则不知胜负，啜茶尝水，则能辨渑淄，如此则智愚杂矣".to_string();
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "fd6f2d4c1c3922eaf47aaf565d50a13f4609a4ef5ba565ee327e1d26664ca9fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd6f2d4c1c3922eaf47aaf565d50a13f4609a4ef5ba565ee327e1d26664ca9fa", kill_on_drop: false }`
[INFO] [stdout] fd6f2d4c1c3922eaf47aaf565d50a13f4609a4ef5ba565ee327e1d26664ca9fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 16852e238e02ebc94395874154c5cea9c0c63a9beae9e4787cdfd972792a40d1
[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" "16852e238e02ebc94395874154c5cea9c0c63a9beae9e4787cdfd972792a40d1", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `str1`
[INFO] [stderr]    --> src/main.rs:347:9
[INFO] [stderr]     |
[INFO] [stderr] 347 |     let str1 = "产不及中人，而欲齐驱金谷，世颇多捷径，而独株守於陵，如此则贫富舛矣".to_string();
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `str2`
[INFO] [stderr]    --> src/main.rs:348:9
[INFO] [stderr]     |
[INFO] [stderr] 348 |     let str2 = "博弈摴蒱，则不知胜负，啜茶尝水，则能辨渑淄，如此则智愚杂矣".to_string();
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str2`
[INFO] [stderr] 
[INFO] [stderr] warning: `toy` (bin "toy" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/toy-8938a5321f2513a8)
[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" "16852e238e02ebc94395874154c5cea9c0c63a9beae9e4787cdfd972792a40d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16852e238e02ebc94395874154c5cea9c0c63a9beae9e4787cdfd972792a40d1", kill_on_drop: false }`
[INFO] [stdout] 16852e238e02ebc94395874154c5cea9c0c63a9beae9e4787cdfd972792a40d1