[INFO] fetching crate flo_binding 2.0.0...
[INFO] checking flo_binding-2.0.0 against try#11084977fccce286b348dbb5473938f22b430250 for pr-89056-3
[INFO] extracting crate flo_binding 2.0.0 into /workspace/builds/worker-94/source
[INFO] validating manifest of crates.io crate flo_binding 2.0.0 on toolchain 11084977fccce286b348dbb5473938f22b430250
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+11084977fccce286b348dbb5473938f22b430250" "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-94/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+11084977fccce286b348dbb5473938f22b430250" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+11084977fccce286b348dbb5473938f22b430250" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flo_rope v0.1.0
[INFO] [stderr]   Downloaded flo_stream v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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" "+11084977fccce286b348dbb5473938f22b430250" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a539f78cee44c748d8d694f42af024f87ff455eadb42c7e82cb3b9d922b0811
[INFO] running `Command { std: "docker" "start" "-a" "4a539f78cee44c748d8d694f42af024f87ff455eadb42c7e82cb3b9d922b0811", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a539f78cee44c748d8d694f42af024f87ff455eadb42c7e82cb3b9d922b0811", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a539f78cee44c748d8d694f42af024f87ff455eadb42c7e82cb3b9d922b0811", kill_on_drop: false }`
[INFO] [stdout] 4a539f78cee44c748d8d694f42af024f87ff455eadb42c7e82cb3b9d922b0811
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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" "+11084977fccce286b348dbb5473938f22b430250" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c2692faa189ac82e3ac2a16652878666b09295817afeb7ce1cb98a16b7b56e4
[INFO] running `Command { std: "docker" "start" "-a" "5c2692faa189ac82e3ac2a16652878666b09295817afeb7ce1cb98a16b7b56e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling syn v1.0.77
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[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 quote v1.0.9
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking desync v0.7.0
[INFO] [stderr]     Checking flo_stream v0.4.0
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.43s
[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] running `Command { std: "docker" "inspect" "5c2692faa189ac82e3ac2a16652878666b09295817afeb7ce1cb98a16b7b56e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c2692faa189ac82e3ac2a16652878666b09295817afeb7ce1cb98a16b7b56e4", kill_on_drop: false }`
[INFO] [stdout] 5c2692faa189ac82e3ac2a16652878666b09295817afeb7ce1cb98a16b7b56e4