[INFO] fetching crate tower-load 0.3.0...
[INFO] checking tower-load-0.3.0 against master#a9e7b30487235621751cc628f170c0f15fb215c4 for pr-136539
[INFO] extracting crate tower-load 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate tower-load 0.3.0 on toolchain a9e7b30487235621751cc628f170c0f15fb215c4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tower-load 0.3.0
[INFO] finished tweaking crates.io crate tower-load 0.3.0
[INFO] tweaked toml for crates.io crate tower-load 0.3.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding pin-project v0.4.30 (available: v1.1.9)
[INFO] [stderr]       Adding tokio v0.2.25 (available: v1.43.0)
[INFO] [stderr]       Adding tokio-test v0.2.1 (available: v0.4.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 922aad11c03250b04e216eb4615523d18e59e88a35374dbdcf7171bb489a8983
[INFO] running `Command { std: "docker" "start" "-a" "922aad11c03250b04e216eb4615523d18e59e88a35374dbdcf7171bb489a8983", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "922aad11c03250b04e216eb4615523d18e59e88a35374dbdcf7171bb489a8983", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "922aad11c03250b04e216eb4615523d18e59e88a35374dbdcf7171bb489a8983", kill_on_drop: false }`
[INFO] [stdout] 922aad11c03250b04e216eb4615523d18e59e88a35374dbdcf7171bb489a8983
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e1596286a6a75c1684c5226aa67ad6ddda74a1dd9b850b77255f72cf481b6c8
[INFO] running `Command { std: "docker" "start" "-a" "6e1596286a6a75c1684c5226aa67ad6ddda74a1dd9b850b77255f72cf481b6c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]    Compiling pin-project-internal v0.4.30
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking tower-service v0.3.3
[INFO] [stderr]     Checking log v0.4.25
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking pin-project v0.4.30
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tokio-test v0.2.1
[INFO] [stderr]     Checking tower-load v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/pending_requests.rs:43:19
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Handle(RefCount);
[INFO] [stdout]    |            ------ ^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Handle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/pending_requests.rs:43:19
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Handle(RefCount);
[INFO] [stdout]    |            ------ ^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Handle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.66s
[INFO] running `Command { std: "docker" "inspect" "6e1596286a6a75c1684c5226aa67ad6ddda74a1dd9b850b77255f72cf481b6c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e1596286a6a75c1684c5226aa67ad6ddda74a1dd9b850b77255f72cf481b6c8", kill_on_drop: false }`
[INFO] [stdout] 6e1596286a6a75c1684c5226aa67ad6ddda74a1dd9b850b77255f72cf481b6c8