[INFO] fetching crate valser 0.1.2...
[INFO] building valser-0.1.2 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate valser 0.1.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate valser 0.1.2
[INFO] finished tweaking crates.io crate valser 0.1.2
[INFO] tweaked toml for crates.io crate valser 0.1.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate valser 0.1.2 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate valser 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0810e311c0ce6c2b1ac8ad0eea9754f645026182db6b6f3ffdf883519383eece
[INFO] running `Command { std: "docker" "start" "-a" "0810e311c0ce6c2b1ac8ad0eea9754f645026182db6b6f3ffdf883519383eece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0810e311c0ce6c2b1ac8ad0eea9754f645026182db6b6f3ffdf883519383eece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0810e311c0ce6c2b1ac8ad0eea9754f645026182db6b6f3ffdf883519383eece", kill_on_drop: false }`
[INFO] [stdout] 0810e311c0ce6c2b1ac8ad0eea9754f645026182db6b6f3ffdf883519383eece
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 088eaa504ba9f6d78e115c547ed30fbca998d1fc04f8653b6c7077db436bf510
[INFO] running `Command { std: "docker" "start" "-a" "088eaa504ba9f6d78e115c547ed30fbca998d1fc04f8653b6c7077db436bf510", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling valser v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/lib.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         k: Self::Kind,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/lib.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         k: Self::Kind,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         i: &mut (dyn Iterator<Item = ControlFlow<T, V>> + '_),
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "088eaa504ba9f6d78e115c547ed30fbca998d1fc04f8653b6c7077db436bf510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "088eaa504ba9f6d78e115c547ed30fbca998d1fc04f8653b6c7077db436bf510", kill_on_drop: false }`
[INFO] [stdout] 088eaa504ba9f6d78e115c547ed30fbca998d1fc04f8653b6c7077db436bf510
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f618124a77130180d2cd2ef951866c483fa773dc8537978d486018b8f784f1a
[INFO] running `Command { std: "docker" "start" "-a" "9f618124a77130180d2cd2ef951866c483fa773dc8537978d486018b8f784f1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling valser v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/lib.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         k: Self::Kind,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/lib.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         k: Self::Kind,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         i: &mut (dyn Iterator<Item = ControlFlow<T, V>> + '_),
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/lib.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         k: Self::Kind,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/lib.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         k: Self::Kind,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         i: &mut (dyn Iterator<Item = ControlFlow<T, V>> + '_),
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "9f618124a77130180d2cd2ef951866c483fa773dc8537978d486018b8f784f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f618124a77130180d2cd2ef951866c483fa773dc8537978d486018b8f784f1a", kill_on_drop: false }`
[INFO] [stdout] 9f618124a77130180d2cd2ef951866c483fa773dc8537978d486018b8f784f1a