[INFO] fetching crate tokio-futures-respawn 0.1.3...
[INFO] checking tokio-futures-respawn-0.1.3 against master#092a284ba0421695f2032c947765429fd7095796 for pr-139763
[INFO] extracting crate tokio-futures-respawn 0.1.3 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate tokio-futures-respawn 0.1.3 on toolchain 092a284ba0421695f2032c947765429fd7095796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tokio-futures-respawn 0.1.3
[INFO] finished tweaking crates.io crate tokio-futures-respawn 0.1.3
[INFO] tweaked toml for crates.io crate tokio-futures-respawn 0.1.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 44 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebe60505a0ef77ea919dbc412ce2d7b4d476b9d5fafce5f0f4fe6c48f0755b86
[INFO] running `Command { std: "docker" "start" "-a" "ebe60505a0ef77ea919dbc412ce2d7b4d476b9d5fafce5f0f4fe6c48f0755b86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebe60505a0ef77ea919dbc412ce2d7b4d476b9d5fafce5f0f4fe6c48f0755b86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebe60505a0ef77ea919dbc412ce2d7b4d476b9d5fafce5f0f4fe6c48f0755b86", kill_on_drop: false }`
[INFO] [stdout] ebe60505a0ef77ea919dbc412ce2d7b4d476b9d5fafce5f0f4fe6c48f0755b86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba8bff10a4c8b3dd106af283b4284675d2807b9e05db772737a5c039eba1c9c2
[INFO] running `Command { std: "docker" "start" "-a" "ba8bff10a4c8b3dd106af283b4284675d2807b9e05db772737a5c039eba1c9c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking smallvec v1.15.0
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking bytes v1.10.1
[INFO] [stderr]     Checking tracing-core v0.1.33
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]     Checking socket2 v0.5.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]     Checking tokio v1.44.2
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking tokio-futures-respawn v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `TaskReturnsResult` is never constructed
[INFO] [stdout]    --> src/lib.rs:190:12
[INFO] [stdout]     |
[INFO] [stdout] 190 |     struct TaskReturnsResult;
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TaskReturnsVoid` is never constructed
[INFO] [stdout]    --> src/lib.rs:218:12
[INFO] [stdout]     |
[INFO] [stdout] 218 |     struct TaskReturnsVoid;
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.99s
[INFO] running `Command { std: "docker" "inspect" "ba8bff10a4c8b3dd106af283b4284675d2807b9e05db772737a5c039eba1c9c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba8bff10a4c8b3dd106af283b4284675d2807b9e05db772737a5c039eba1c9c2", kill_on_drop: false }`
[INFO] [stdout] ba8bff10a4c8b3dd106af283b4284675d2807b9e05db772737a5c039eba1c9c2