[INFO] fetching crate better_btree 0.2.3...
[INFO] checking better_btree-0.2.3 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate better_btree 0.2.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate better_btree 0.2.3 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate better_btree 0.2.3
[INFO] finished tweaking crates.io crate better_btree 0.2.3
[INFO] tweaked toml for crates.io crate better_btree 0.2.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01b25a782185c290d204cb8c49ba2e6ae0e8c06991812bbbd47ef65f230e0644
[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" "01b25a782185c290d204cb8c49ba2e6ae0e8c06991812bbbd47ef65f230e0644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01b25a782185c290d204cb8c49ba2e6ae0e8c06991812bbbd47ef65f230e0644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01b25a782185c290d204cb8c49ba2e6ae0e8c06991812bbbd47ef65f230e0644", kill_on_drop: false }`
[INFO] [stdout] 01b25a782185c290d204cb8c49ba2e6ae0e8c06991812bbbd47ef65f230e0644
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 099dd6bbf7c371e0bdd80584e2b3cbe4c48e5a32805c89b35b3053118edc1c28
[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" "099dd6bbf7c371e0bdd80584e2b3cbe4c48e5a32805c89b35b3053118edc1c28", kill_on_drop: false }`
[INFO] [stderr]     Checking better_btree v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `is_internal`
[INFO] [stdout]    --> src/node.rs:352:9
[INFO] [stdout]     |
[INFO] [stdout] 352 |     pub fn is_internal(&self) -> bool { self.data.is_internal() }
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_internal`
[INFO] [stdout]    --> src/node.rs:352:9
[INFO] [stdout]     |
[INFO] [stdout] 352 |     pub fn is_internal(&self) -> bool { self.data.is_internal() }
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "099dd6bbf7c371e0bdd80584e2b3cbe4c48e5a32805c89b35b3053118edc1c28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "099dd6bbf7c371e0bdd80584e2b3cbe4c48e5a32805c89b35b3053118edc1c28", kill_on_drop: false }`
[INFO] [stdout] 099dd6bbf7c371e0bdd80584e2b3cbe4c48e5a32805c89b35b3053118edc1c28