[INFO] fetching crate flo_binding 2.0.0...
[INFO] checking flo_binding-2.0.0 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate flo_binding 2.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate flo_binding 2.0.0 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flo_binding 2.0.0
[INFO] finished tweaking crates.io crate flo_binding 2.0.0
[INFO] tweaked toml for crates.io crate flo_binding 2.0.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ded934d6b74af9c796d7299030d81655ede6b5d7f7272eeeaea7cbae1c0a080f
[INFO] running `Command { std: "docker" "start" "-a" "ded934d6b74af9c796d7299030d81655ede6b5d7f7272eeeaea7cbae1c0a080f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ded934d6b74af9c796d7299030d81655ede6b5d7f7272eeeaea7cbae1c0a080f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ded934d6b74af9c796d7299030d81655ede6b5d7f7272eeeaea7cbae1c0a080f", kill_on_drop: false }`
[INFO] [stdout] ded934d6b74af9c796d7299030d81655ede6b5d7f7272eeeaea7cbae1c0a080f
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ea87f5bda130c35e071f07f378ba233d2141ff2b7bfd5c9f8b2c86623786588
[INFO] running `Command { std: "docker" "start" "-a" "0ea87f5bda130c35e071f07f378ba233d2141ff2b7bfd5c9f8b2c86623786588", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking flo_rope v0.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking flo_stream v0.4.0
[INFO] [stderr]     Checking desync v0.7.0
[INFO] [stderr]     Checking flo_binding v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `nested`
[INFO] [stdout]    --> src/binding_context.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     nested: Option<Box<BindingContext>>
[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: field is never read: `nested`
[INFO] [stdout]    --> src/binding_context.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     nested: Option<Box<BindingContext>>
[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 15.97s
[INFO] running `Command { std: "docker" "inspect" "0ea87f5bda130c35e071f07f378ba233d2141ff2b7bfd5c9f8b2c86623786588", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ea87f5bda130c35e071f07f378ba233d2141ff2b7bfd5c9f8b2c86623786588", kill_on_drop: false }`
[INFO] [stdout] 0ea87f5bda130c35e071f07f378ba233d2141ff2b7bfd5c9f8b2c86623786588