[INFO] fetching crate gfx-descriptor 0.2.0...
[INFO] checking gfx-descriptor-0.2.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate gfx-descriptor 0.2.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate gfx-descriptor 0.2.0
[INFO] finished tweaking crates.io crate gfx-descriptor 0.2.0
[INFO] tweaked toml for crates.io crate gfx-descriptor 0.2.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate gfx-descriptor 0.2.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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 10 packages to latest compatible versions
[INFO] [stderr]       Adding arrayvec v0.5.2 (available: v0.7.6)
[INFO] [stderr]       Adding gfx-hal v0.6.0 (available: v0.9.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 370e44d830a56883111415a64c77d6b3d8a4eb02eba5e6d4bc7b38ebdc42425f
[INFO] running `Command { std: "docker" "start" "-a" "370e44d830a56883111415a64c77d6b3d8a4eb02eba5e6d4bc7b38ebdc42425f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "370e44d830a56883111415a64c77d6b3d8a4eb02eba5e6d4bc7b38ebdc42425f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "370e44d830a56883111415a64c77d6b3d8a4eb02eba5e6d4bc7b38ebdc42425f", kill_on_drop: false }`
[INFO] [stdout] 370e44d830a56883111415a64c77d6b3d8a4eb02eba5e6d4bc7b38ebdc42425f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 988c20833825d5cd07ee38f8acd0f7bd6f4abd4dfb890fa7948bd4ec42131e1d
[INFO] running `Command { std: "docker" "start" "-a" "988c20833825d5cd07ee38f8acd0f7bd6f4abd4dfb890fa7948bd4ec42131e1d", kill_on_drop: false }`
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking raw-window-handle v0.4.3
[INFO] [stderr]     Checking raw-window-handle v0.3.4
[INFO] [stderr]     Checking gfx-hal v0.6.0
[INFO] [stderr]     Checking gfx-descriptor v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `total` is never read
[INFO] [stdout]    --> src/allocator.rs:238:5
[INFO] [stdout]     |
[INFO] [stdout] 235 | pub struct DescriptorAllocator<B: Backend> {
[INFO] [stdout]     |            ------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 238 |     total: u64,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DescriptorAllocator` 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 `total` is never read
[INFO] [stdout]    --> src/allocator.rs:238:5
[INFO] [stdout]     |
[INFO] [stdout] 235 | pub struct DescriptorAllocator<B: Backend> {
[INFO] [stdout]     |            ------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 238 |     total: u64,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DescriptorAllocator` 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 2.66s
[INFO] running `Command { std: "docker" "inspect" "988c20833825d5cd07ee38f8acd0f7bd6f4abd4dfb890fa7948bd4ec42131e1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "988c20833825d5cd07ee38f8acd0f7bd6f4abd4dfb890fa7948bd4ec42131e1d", kill_on_drop: false }`
[INFO] [stdout] 988c20833825d5cd07ee38f8acd0f7bd6f4abd4dfb890fa7948bd4ec42131e1d