[INFO] fetching crate bellframe 0.3.0-alpha.1...
[INFO] checking bellframe-0.3.0-alpha.1 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate bellframe 0.3.0-alpha.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate bellframe 0.3.0-alpha.1 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bellframe 0.3.0-alpha.1
[INFO] finished tweaking crates.io crate bellframe 0.3.0-alpha.1
[INFO] tweaked toml for crates.io crate bellframe 0.3.0-alpha.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] df685778b1c9c769a0f0891a8de3f4e4ee80fc8bf4563c666232511eb95ef7ca
[INFO] running `Command { std: "docker" "start" "-a" "df685778b1c9c769a0f0891a8de3f4e4ee80fc8bf4563c666232511eb95ef7ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df685778b1c9c769a0f0891a8de3f4e4ee80fc8bf4563c666232511eb95ef7ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df685778b1c9c769a0f0891a8de3f4e4ee80fc8bf4563c666232511eb95ef7ca", kill_on_drop: false }`
[INFO] [stdout] df685778b1c9c769a0f0891a8de3f4e4ee80fc8bf4563c666232511eb95ef7ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 062678f6808d9b3129de1b4b85625becda866b9345d860aca21a0f81dea033e5
[INFO] running `Command { std: "docker" "start" "-a" "062678f6808d9b3129de1b4b85625becda866b9345d860aca21a0f81dea033e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking quick-error v2.0.1
[INFO] [stderr]     Checking edit-distance v2.1.0
[INFO] [stderr]     Checking shortlist v0.2.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking proptest v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]     Checking serde v1.0.129
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]     Checking bellframe v0.3.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `first_lead`
[INFO] [stdout]    --> src/method.rs:266:24
[INFO] [stdout]     |
[INFO] [stdout] 266 |     pub fn classify<A>(first_lead: &AnnotBlock<A>) -> FullClass {
[INFO] [stdout]     |                        ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_lead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first_lead`
[INFO] [stdout]    --> src/method.rs:266:24
[INFO] [stdout]     |
[INFO] [stdout] 266 |     pub fn classify<A>(first_lead: &AnnotBlock<A>) -> FullClass {
[INFO] [stdout]     |                        ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_lead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.41s
[INFO] running `Command { std: "docker" "inspect" "062678f6808d9b3129de1b4b85625becda866b9345d860aca21a0f81dea033e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "062678f6808d9b3129de1b4b85625becda866b9345d860aca21a0f81dea033e5", kill_on_drop: false }`
[INFO] [stdout] 062678f6808d9b3129de1b4b85625becda866b9345d860aca21a0f81dea033e5