[INFO] cloning repository https://github.com/raskad/sponge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/raskad/sponge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraskad%2Fsponge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraskad%2Fsponge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a79eb3e46072f79ea34da60a15e50f2c02f709f7
[INFO] testing raskad/sponge against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraskad%2Fsponge" "/workspace/builds/worker-113/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-113/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/raskad/sponge 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/raskad/sponge
[INFO] finished tweaking git repo https://github.com/raskad/sponge
[INFO] tweaked toml for git repo https://github.com/raskad/sponge written to /workspace/builds/worker-113/source/Cargo.toml
[INFO] crate git repo https://github.com/raskad/sponge 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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] a364b927aadfa9d9661df4267741430c20eaa7b9f6edab4c518f3099b74c7f4f
[INFO] running `Command { std: "docker" "start" "-a" "a364b927aadfa9d9661df4267741430c20eaa7b9f6edab4c518f3099b74c7f4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a364b927aadfa9d9661df4267741430c20eaa7b9f6edab4c518f3099b74c7f4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a364b927aadfa9d9661df4267741430c20eaa7b9f6edab4c518f3099b74c7f4f", kill_on_drop: false }`
[INFO] [stdout] a364b927aadfa9d9661df4267741430c20eaa7b9f6edab4c518f3099b74c7f4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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] 4046c2dd1ce60439a7d1a24f59c49eab69df59e4cbe9e24a2f48afea0d05c8aa
[INFO] running `Command { std: "docker" "start" "-a" "4046c2dd1ce60439a7d1a24f59c49eab69df59e4cbe9e24a2f48afea0d05c8aa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling sponge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 &r.push(c2);
[INFO] [stdout]    |                 ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 &r.push(c2);
[INFO] [stdout]    |                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.36s
[INFO] running `Command { std: "docker" "inspect" "4046c2dd1ce60439a7d1a24f59c49eab69df59e4cbe9e24a2f48afea0d05c8aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4046c2dd1ce60439a7d1a24f59c49eab69df59e4cbe9e24a2f48afea0d05c8aa", kill_on_drop: false }`
[INFO] [stdout] 4046c2dd1ce60439a7d1a24f59c49eab69df59e4cbe9e24a2f48afea0d05c8aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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] 420c40f27729d637d6f7f8d91a6060fbcf1858aa4038b4c99be77e1408c45dfb
[INFO] running `Command { std: "docker" "start" "-a" "420c40f27729d637d6f7f8d91a6060fbcf1858aa4038b4c99be77e1408c45dfb", kill_on_drop: false }`
[INFO] [stderr]    Compiling sponge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 &r.push(c2);
[INFO] [stdout]    |                 ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 &r.push(c2);
[INFO] [stdout]    |                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "420c40f27729d637d6f7f8d91a6060fbcf1858aa4038b4c99be77e1408c45dfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "420c40f27729d637d6f7f8d91a6060fbcf1858aa4038b4c99be77e1408c45dfb", kill_on_drop: false }`
[INFO] [stdout] 420c40f27729d637d6f7f8d91a6060fbcf1858aa4038b4c99be77e1408c45dfb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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] 38ffeb9b3cf84c897307ab0d4f3ef725b22f58e16db8e629c2f71d432c6f07d5
[INFO] running `Command { std: "docker" "start" "-a" "38ffeb9b3cf84c897307ab0d4f3ef725b22f58e16db8e629c2f71d432c6f07d5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/main.rs:27:17
[INFO] [stderr]    |
[INFO] [stderr] 27 |                 &r.push(c2);
[INFO] [stderr]    |                 ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/main.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 &r.push(c2);
[INFO] [stderr]    |                 ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sponge` (bin "sponge" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sponge-4a45b84f96f5c7a8)
[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" "38ffeb9b3cf84c897307ab0d4f3ef725b22f58e16db8e629c2f71d432c6f07d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38ffeb9b3cf84c897307ab0d4f3ef725b22f58e16db8e629c2f71d432c6f07d5", kill_on_drop: false }`
[INFO] [stdout] 38ffeb9b3cf84c897307ab0d4f3ef725b22f58e16db8e629c2f71d432c6f07d5