[INFO] fetching crate jrsonnet-gc 0.4.2...
[INFO] checking jrsonnet-gc-0.4.2 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate jrsonnet-gc 0.4.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate jrsonnet-gc 0.4.2 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jrsonnet-gc 0.4.2
[INFO] finished tweaking crates.io crate jrsonnet-gc 0.4.2
[INFO] tweaked toml for crates.io crate jrsonnet-gc 0.4.2 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.76)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jrsonnet-gc-derive v0.4.1
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98e102c82344556c5a6cc0b6ddfc978181e05d3b4e2c0081c894bf67bffd693c
[INFO] running `Command { std: "docker" "start" "-a" "98e102c82344556c5a6cc0b6ddfc978181e05d3b4e2c0081c894bf67bffd693c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98e102c82344556c5a6cc0b6ddfc978181e05d3b4e2c0081c894bf67bffd693c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98e102c82344556c5a6cc0b6ddfc978181e05d3b4e2c0081c894bf67bffd693c", kill_on_drop: false }`
[INFO] [stdout] 98e102c82344556c5a6cc0b6ddfc978181e05d3b4e2c0081c894bf67bffd693c
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c5dd6094d7a9a7c58f9f5df97098c9b011d5b50ebc80d2cd828fc56ce695348
[INFO] running `Command { std: "docker" "start" "-a" "3c5dd6094d7a9a7c58f9f5df97098c9b011d5b50ebc80d2cd828fc56ce695348", kill_on_drop: false }`
[INFO] [stderr]     Checking jrsonnet-gc v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling jrsonnet-gc-derive v0.4.1
[INFO] [stdout] warning: struct `InnerBoxSlice` is never constructed
[INFO] [stdout]   --> tests/trace_impl.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct InnerBoxSlice {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InnerBoxStr` is never constructed
[INFO] [stdout]   --> tests/trace_impl.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct InnerBoxStr {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InnerRcSlice` is never constructed
[INFO] [stdout]   --> tests/trace_impl.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct InnerRcSlice {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InnerRcStr` is never constructed
[INFO] [stdout]   --> tests/trace_impl.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct InnerRcStr {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `X` is never constructed
[INFO] [stdout]   --> tests/finalize.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct X(Box<dyn Trace>);
[INFO] [stdout]    |        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "3c5dd6094d7a9a7c58f9f5df97098c9b011d5b50ebc80d2cd828fc56ce695348", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c5dd6094d7a9a7c58f9f5df97098c9b011d5b50ebc80d2cd828fc56ce695348", kill_on_drop: false }`
[INFO] [stdout] 3c5dd6094d7a9a7c58f9f5df97098c9b011d5b50ebc80d2cd828fc56ce695348