[INFO] fetching crate dynasm 2.0.0...
[INFO] checking dynasm-2.0.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate dynasm 2.0.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate dynasm 2.0.0 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 dynasm 2.0.0
[INFO] finished tweaking crates.io crate dynasm 2.0.0
[INFO] tweaked toml for crates.io crate dynasm 2.0.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.6.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ad39662b2c8a3b7ff49b71a3f0db33103b25768b0b6b01e5e1b28b1dcc782289
[INFO] running `Command { std: "docker" "start" "-a" "ad39662b2c8a3b7ff49b71a3f0db33103b25768b0b6b01e5e1b28b1dcc782289", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad39662b2c8a3b7ff49b71a3f0db33103b25768b0b6b01e5e1b28b1dcc782289", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad39662b2c8a3b7ff49b71a3f0db33103b25768b0b6b01e5e1b28b1dcc782289", kill_on_drop: false }`
[INFO] [stdout] ad39662b2c8a3b7ff49b71a3f0db33103b25768b0b6b01e5e1b28b1dcc782289
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] df29ec1f17edd721c27901fda4ea83e5386658f88371e361f9d60d11d9582c0c
[INFO] running `Command { std: "docker" "start" "-a" "df29ec1f17edd721c27901fda4ea83e5386658f88371e361f9d60d11d9582c0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking dynasm v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `name` is never used
[INFO] [stdout]   --> src/arch/mod.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) trait Arch : Debug + Send {
[INFO] [stdout]    |                  ---- method in this trait
[INFO] [stdout] 13 |     fn name(&self) -> &str;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/arch/mod.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct DummyArch {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 22 |     name: &'static str
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DummyArch` 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: field `span` is never read
[INFO] [stdout]    --> src/arch/x64/ast.rs:338:9
[INFO] [stdout]     |
[INFO] [stdout] 337 |     Indirect {
[INFO] [stdout]     |     -------- field in this variant
[INFO] [stdout] 338 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SizedArg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/arch/x64/ast.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 345 |     Direct {
[INFO] [stdout]     |     ------ field in this variant
[INFO] [stdout] 346 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SizedArg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/arch/aarch64/ast.rs:285:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |     Direct {
[INFO] [stdout]     |     ------ field in this variant
[INFO] [stdout] 285 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RefItem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/arch/aarch64/ast.rs:292:9
[INFO] [stdout]     |
[INFO] [stdout] 291 |     Modifier {
[INFO] [stdout]     |     -------- field in this variant
[INFO] [stdout] 292 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RefItem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/arch/aarch64/ast.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 398 |     Dot {
[INFO] [stdout]     |     --- field in this variant
[INFO] [stdout] 399 |         span: Span
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CleanArg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/arch/aarch64/ast.rs:417:9
[INFO] [stdout]     |
[INFO] [stdout] 416 |     Modifier {
[INFO] [stdout]     |     -------- field in this variant
[INFO] [stdout] 417 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FlatArg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `name` is never used
[INFO] [stdout]   --> src/arch/mod.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) trait Arch : Debug + Send {
[INFO] [stdout]    |                  ---- method in this trait
[INFO] [stdout] 13 |     fn name(&self) -> &str;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/arch/mod.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct DummyArch {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 22 |     name: &'static str
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DummyArch` 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: field `span` is never read
[INFO] [stdout]    --> src/arch/x64/ast.rs:338:9
[INFO] [stdout]     |
[INFO] [stdout] 337 |     Indirect {
[INFO] [stdout]     |     -------- field in this variant
[INFO] [stdout] 338 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SizedArg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/arch/x64/ast.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 345 |     Direct {
[INFO] [stdout]     |     ------ field in this variant
[INFO] [stdout] 346 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SizedArg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/arch/aarch64/ast.rs:285:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |     Direct {
[INFO] [stdout]     |     ------ field in this variant
[INFO] [stdout] 285 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RefItem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/arch/aarch64/ast.rs:292:9
[INFO] [stdout]     |
[INFO] [stdout] 291 |     Modifier {
[INFO] [stdout]     |     -------- field in this variant
[INFO] [stdout] 292 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RefItem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/arch/aarch64/ast.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 398 |     Dot {
[INFO] [stdout]     |     --- field in this variant
[INFO] [stdout] 399 |         span: Span
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CleanArg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]    --> src/arch/aarch64/ast.rs:417:9
[INFO] [stdout]     |
[INFO] [stdout] 416 |     Modifier {
[INFO] [stdout]     |     -------- field in this variant
[INFO] [stdout] 417 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FlatArg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.81s
[INFO] running `Command { std: "docker" "inspect" "df29ec1f17edd721c27901fda4ea83e5386658f88371e361f9d60d11d9582c0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df29ec1f17edd721c27901fda4ea83e5386658f88371e361f9d60d11d9582c0c", kill_on_drop: false }`
[INFO] [stdout] df29ec1f17edd721c27901fda4ea83e5386658f88371e361f9d60d11d9582c0c