[INFO] fetching crate cloud-storage-signature 0.6.9...
[INFO] checking cloud-storage-signature-0.6.9 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate cloud-storage-signature 0.6.9 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate cloud-storage-signature 0.6.9 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cloud-storage-signature 0.6.9
[INFO] finished tweaking crates.io crate cloud-storage-signature 0.6.9
[INFO] tweaked toml for crates.io crate cloud-storage-signature 0.6.9 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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 170 packages to latest compatible versions
[INFO] [stderr]       Adding deadpool v0.10.0 (available: v0.12.1)
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[INFO] [stderr]       Adding windows-core v0.52.0 (available: v0.58.0)
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6527038b80756914311c8abe28c919daaae83c6377bed6e03118f930bdf5b3d
[INFO] running `Command { std: "docker" "start" "-a" "c6527038b80756914311c8abe28c919daaae83c6377bed6e03118f930bdf5b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6527038b80756914311c8abe28c919daaae83c6377bed6e03118f930bdf5b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6527038b80756914311c8abe28c919daaae83c6377bed6e03118f930bdf5b3d", kill_on_drop: false }`
[INFO] [stdout] c6527038b80756914311c8abe28c919daaae83c6377bed6e03118f930bdf5b3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a6ae4e12852a637ecc8de02f7c35751ebddcee8cd9bceca90226e97defc35d5
[INFO] running `Command { std: "docker" "start" "-a" "2a6ae4e12852a637ecc8de02f7c35751ebddcee8cd9bceca90226e97defc35d5", kill_on_drop: false }`
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[INFO] [stderr]     Checking cloud-storage-signature v0.6.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Aws4Request` is never constructed
[INFO] [stdout]  --> src/private/request_type.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum RequestType {
[INFO] [stdout]   |          ----------- variant in this enum
[INFO] [stdout] 4 |     Goog4Request,
[INFO] [stdout] 5 |     Aws4Request,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RequestType` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `S3` is never constructed
[INFO] [stdout]  --> src/private/service.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Service {
[INFO] [stdout]   |          ------- variant in this enum
[INFO] [stdout] 4 |     Storage,
[INFO] [stdout] 5 |     S3,
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Service` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Aws4HmacSha256` is never constructed
[INFO] [stdout]  --> src/private/signing_algorithm.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum SigningAlgorithm {
[INFO] [stdout]   |          ---------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 6 |     Aws4HmacSha256,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SigningAlgorithm` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.58s
[INFO] running `Command { std: "docker" "inspect" "2a6ae4e12852a637ecc8de02f7c35751ebddcee8cd9bceca90226e97defc35d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a6ae4e12852a637ecc8de02f7c35751ebddcee8cd9bceca90226e97defc35d5", kill_on_drop: false }`
[INFO] [stdout] 2a6ae4e12852a637ecc8de02f7c35751ebddcee8cd9bceca90226e97defc35d5