[INFO] fetching crate rsv-core 0.0.4... [INFO] checking rsv-core-0.0.4 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate rsv-core 0.0.4 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate rsv-core 0.0.4 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate rsv-core 0.0.4 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate rsv-core 0.0.4 [INFO] tweaked toml for crates.io crate rsv-core 0.0.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate crates.io crate rsv-core 0.0.4 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 549bc11352927f6115493142e0fbf4d8e2ca2cd9cd066a391e3d7abbb6bf3e01 [INFO] running `Command { std: "docker" "start" "-a" "549bc11352927f6115493142e0fbf4d8e2ca2cd9cd066a391e3d7abbb6bf3e01", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "549bc11352927f6115493142e0fbf4d8e2ca2cd9cd066a391e3d7abbb6bf3e01", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "549bc11352927f6115493142e0fbf4d8e2ca2cd9cd066a391e3d7abbb6bf3e01", kill_on_drop: false }` [INFO] [stdout] 549bc11352927f6115493142e0fbf4d8e2ca2cd9cd066a391e3d7abbb6bf3e01 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 777ce55444dd2cc318d0d7d44257c29000f1cff47ecaa5174cd06580887add45 [INFO] running `Command { std: "docker" "start" "-a" "777ce55444dd2cc318d0d7d44257c29000f1cff47ecaa5174cd06580887add45", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.152 [INFO] [stderr] Compiling proc-macro2 v1.0.78 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Compiling pkg-config v0.3.29 [INFO] [stderr] Compiling serde v1.0.195 [INFO] [stderr] Compiling zstd-safe v7.0.0 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Compiling syn v2.0.48 [INFO] [stderr] Compiling jobserver v0.1.27 [INFO] [stderr] Compiling cc v1.0.83 [INFO] [stderr] Compiling zstd-sys v2.0.9+zstd.1.5.5 [INFO] [stderr] Compiling serde_derive v1.0.195 [INFO] [stderr] Checking zstd v0.13.0 [INFO] [stderr] Checking rsv-core v0.0.4 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:80:33 [INFO] [stdout] | [INFO] [stdout] 80 | fn deserialize_any(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/deserializer.rs:86:28 [INFO] [stdout] | [INFO] [stdout] 86 | fn deserialize_bool(mut self, visitor: V) -> Result [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/deserializer.rs:98:26 [INFO] [stdout] | [INFO] [stdout] 98 | fn deserialize_i8(mut self, visitor: V) -> Result [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:213:35 [INFO] [stdout] | [INFO] [stdout] 213 | fn deserialize_bytes(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:219:38 [INFO] [stdout] | [INFO] [stdout] 219 | fn deserialize_byte_buf(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:235:34 [INFO] [stdout] | [INFO] [stdout] 235 | fn deserialize_unit(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/deserializer.rs:243:9 [INFO] [stdout] | [INFO] [stdout] 243 | name: &'static str, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:244:9 [INFO] [stdout] | [INFO] [stdout] 244 | visitor: V, [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/deserializer.rs:253:9 [INFO] [stdout] | [INFO] [stdout] 253 | name: &'static str, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:254:9 [INFO] [stdout] | [INFO] [stdout] 254 | visitor: V, [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `len` [INFO] [stdout] --> src/deserializer.rs:267:35 [INFO] [stdout] | [INFO] [stdout] 267 | fn deserialize_tuple(self, len: usize, visitor: V) -> Result [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_len` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:267:47 [INFO] [stdout] | [INFO] [stdout] 267 | fn deserialize_tuple(self, len: usize, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/deserializer.rs:275:9 [INFO] [stdout] | [INFO] [stdout] 275 | name: &'static str, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `len` [INFO] [stdout] --> src/deserializer.rs:276:9 [INFO] [stdout] | [INFO] [stdout] 276 | len: usize, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_len` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:277:9 [INFO] [stdout] | [INFO] [stdout] 277 | visitor: V, [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/deserializer.rs:292:9 [INFO] [stdout] | [INFO] [stdout] 292 | name: &'static str, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `fields` [INFO] [stdout] --> src/deserializer.rs:293:9 [INFO] [stdout] | [INFO] [stdout] 293 | fields: &'static [&'static str], [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/deserializer.rs:303:9 [INFO] [stdout] | [INFO] [stdout] 303 | name: &'static str, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `variants` [INFO] [stdout] --> src/deserializer.rs:304:9 [INFO] [stdout] | [INFO] [stdout] 304 | variants: &'static [&'static str], [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variants` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:305:9 [INFO] [stdout] | [INFO] [stdout] 305 | visitor: V, [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:312:40 [INFO] [stdout] | [INFO] [stdout] 312 | fn deserialize_identifier(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:318:41 [INFO] [stdout] | [INFO] [stdout] 318 | fn deserialize_ignored_any(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:80:33 [INFO] [stdout] | [INFO] [stdout] 80 | fn deserialize_any(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/deserializer.rs:86:28 [INFO] [stdout] | [INFO] [stdout] 86 | fn deserialize_bool(mut self, visitor: V) -> Result [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/deserializer.rs:98:26 [INFO] [stdout] | [INFO] [stdout] 98 | fn deserialize_i8(mut self, visitor: V) -> Result [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:213:35 [INFO] [stdout] | [INFO] [stdout] 213 | fn deserialize_bytes(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:219:38 [INFO] [stdout] | [INFO] [stdout] 219 | fn deserialize_byte_buf(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:235:34 [INFO] [stdout] | [INFO] [stdout] 235 | fn deserialize_unit(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/deserializer.rs:243:9 [INFO] [stdout] | [INFO] [stdout] 243 | name: &'static str, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:244:9 [INFO] [stdout] | [INFO] [stdout] 244 | visitor: V, [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/deserializer.rs:253:9 [INFO] [stdout] | [INFO] [stdout] 253 | name: &'static str, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:254:9 [INFO] [stdout] | [INFO] [stdout] 254 | visitor: V, [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `len` [INFO] [stdout] --> src/deserializer.rs:267:35 [INFO] [stdout] | [INFO] [stdout] 267 | fn deserialize_tuple(self, len: usize, visitor: V) -> Result [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_len` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:267:47 [INFO] [stdout] | [INFO] [stdout] 267 | fn deserialize_tuple(self, len: usize, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/deserializer.rs:275:9 [INFO] [stdout] | [INFO] [stdout] 275 | name: &'static str, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `len` [INFO] [stdout] --> src/deserializer.rs:276:9 [INFO] [stdout] | [INFO] [stdout] 276 | len: usize, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_len` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:277:9 [INFO] [stdout] | [INFO] [stdout] 277 | visitor: V, [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/deserializer.rs:292:9 [INFO] [stdout] | [INFO] [stdout] 292 | name: &'static str, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `fields` [INFO] [stdout] --> src/deserializer.rs:293:9 [INFO] [stdout] | [INFO] [stdout] 293 | fields: &'static [&'static str], [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/deserializer.rs:303:9 [INFO] [stdout] | [INFO] [stdout] 303 | name: &'static str, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `variants` [INFO] [stdout] --> src/deserializer.rs:304:9 [INFO] [stdout] | [INFO] [stdout] 304 | variants: &'static [&'static str], [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variants` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:305:9 [INFO] [stdout] | [INFO] [stdout] 305 | visitor: V, [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:312:40 [INFO] [stdout] | [INFO] [stdout] 312 | fn deserialize_identifier(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visitor` [INFO] [stdout] --> src/deserializer.rs:318:41 [INFO] [stdout] | [INFO] [stdout] 318 | fn deserialize_ignored_any(self, visitor: V) -> Result [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 22 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 22 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.37s [INFO] running `Command { std: "docker" "inspect" "777ce55444dd2cc318d0d7d44257c29000f1cff47ecaa5174cd06580887add45", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "777ce55444dd2cc318d0d7d44257c29000f1cff47ecaa5174cd06580887add45", kill_on_drop: false }` [INFO] [stdout] 777ce55444dd2cc318d0d7d44257c29000f1cff47ecaa5174cd06580887add45