[INFO] fetching crate kay_codegen 0.3.10...
[INFO] checking kay_codegen-0.3.10 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate kay_codegen 0.3.10 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate kay_codegen 0.3.10 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 kay_codegen 0.3.10
[INFO] finished tweaking crates.io crate kay_codegen 0.3.10
[INFO] tweaked toml for crates.io crate kay_codegen 0.3.10 written to /workspace/builds/worker-6-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 21 packages to latest compatible versions
[INFO] [stderr]       Adding ansi_term v0.11.0 (available: v0.12.1)
[INFO] [stderr]       Adding ctor v0.1.26 (available: v0.2.8)
[INFO] [stderr]       Adding hashbrown v0.12.3 (available: v0.14.5)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.5.0)
[INFO] [stderr]       Adding pretty_assertions v0.6.1 (available: v1.4.1)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (available: v1.0.86)
[INFO] [stderr]       Adding quote v0.6.13 (available: v1.0.37)
[INFO] [stderr]       Adding syn v0.15.44 (available: v2.0.79)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.79)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (available: v0.2.6)
[INFO] [stderr]       Adding unindent v0.1.11 (available: v0.2.3)
[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] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 0d6e8d6ebc9f7d9bdf0c35f795c95c1f7ae8705c917fa226d24f01daeb444cab
[INFO] running `Command { std: "docker" "start" "-a" "0d6e8d6ebc9f7d9bdf0c35f795c95c1f7ae8705c917fa226d24f01daeb444cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d6e8d6ebc9f7d9bdf0c35f795c95c1f7ae8705c917fa226d24f01daeb444cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d6e8d6ebc9f7d9bdf0c35f795c95c1f7ae8705c917fa226d24f01daeb444cab", kill_on_drop: false }`
[INFO] [stdout] 0d6e8d6ebc9f7d9bdf0c35f795c95c1f7ae8705c917fa226d24f01daeb444cab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 05561e4af3c67c5ee304a07ce0009eb201b8bc3db9de15522ca46c6eff1d606b
[INFO] running `Command { std: "docker" "start" "-a" "05561e4af3c67c5ee304a07ce0009eb201b8bc3db9de15522ca46c6eff1d606b", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking unindent v0.1.11
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking kay_codegen v0.3.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&syn::FnArg` instead of cloning the inner type
[INFO] [stdout]    --> src/parsers.rs:182:173
[INFO] [stdout]     |
[INFO] [stdout] 182 | ...y, ..}), ..})) = sig.decl.inputs.last().map(|pair| pair.value().clone()) {
[INFO] [stdout]     |                                                                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&syn::FnArg` instead of cloning the inner type
[INFO] [stdout]    --> src/parsers.rs:186:70
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 match sig.decl.inputs.first().map(|pair| pair.value().clone()) {
[INFO] [stdout]     |                                                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&syn::FnArg` instead of cloning the inner type
[INFO] [stdout]    --> src/parsers.rs:182:173
[INFO] [stdout]     |
[INFO] [stdout] 182 | ...y, ..}), ..})) = sig.decl.inputs.last().map(|pair| pair.value().clone()) {
[INFO] [stdout]     |                                                                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&syn::FnArg` instead of cloning the inner type
[INFO] [stdout]    --> src/parsers.rs:186:70
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 match sig.decl.inputs.first().map(|pair| pair.value().clone()) {
[INFO] [stdout]     |                                                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.71s
[INFO] running `Command { std: "docker" "inspect" "05561e4af3c67c5ee304a07ce0009eb201b8bc3db9de15522ca46c6eff1d606b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05561e4af3c67c5ee304a07ce0009eb201b8bc3db9de15522ca46c6eff1d606b", kill_on_drop: false }`
[INFO] [stdout] 05561e4af3c67c5ee304a07ce0009eb201b8bc3db9de15522ca46c6eff1d606b