[INFO] fetching crate convo 0.1.2...
[INFO] checking convo-0.1.2 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate convo 0.1.2 into /workspace/builds/worker-114/source
[INFO] validating manifest of crates.io crate convo 0.1.2 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate convo 0.1.2
[INFO] finished tweaking crates.io crate convo 0.1.2
[INFO] tweaked toml for crates.io crate convo 0.1.2 written to /workspace/builds/worker-114/source/Cargo.toml
[INFO] crate crates.io crate convo 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4fc143ea299809e20044ad1adeafec0a6350b357cc2c879b9fc4c261b8812fee
[INFO] running `Command { std: "docker" "start" "-a" "4fc143ea299809e20044ad1adeafec0a6350b357cc2c879b9fc4c261b8812fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fc143ea299809e20044ad1adeafec0a6350b357cc2c879b9fc4c261b8812fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fc143ea299809e20044ad1adeafec0a6350b357cc2c879b9fc4c261b8812fee", kill_on_drop: false }`
[INFO] [stdout] 4fc143ea299809e20044ad1adeafec0a6350b357cc2c879b9fc4c261b8812fee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f08a502ec52b218b7f6917e036864c7690d0a46d8d9b5dc8ba3a9d7ca929a78
[INFO] running `Command { std: "docker" "start" "-a" "4f08a502ec52b218b7f6917e036864c7690d0a46d8d9b5dc8ba3a9d7ca929a78", kill_on_drop: false }`
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking convo v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/importer.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |         &node.links.extend(links);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let _ = &node.links.extend(links);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/importer.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |         &node.links.extend(links);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let _ = &node.links.extend(links);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "4f08a502ec52b218b7f6917e036864c7690d0a46d8d9b5dc8ba3a9d7ca929a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f08a502ec52b218b7f6917e036864c7690d0a46d8d9b5dc8ba3a9d7ca929a78", kill_on_drop: false }`
[INFO] [stdout] 4f08a502ec52b218b7f6917e036864c7690d0a46d8d9b5dc8ba3a9d7ca929a78