[INFO] fetching crate polyfuse 0.4.1...
[INFO] checking polyfuse-0.4.1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate polyfuse 0.4.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate polyfuse 0.4.1 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 polyfuse 0.4.1
[INFO] finished tweaking crates.io crate polyfuse 0.4.1
[INFO] tweaked toml for crates.io crate polyfuse 0.4.1 written to /workspace/builds/worker-4-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 18 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.79)
[INFO] [stderr]       Adding synstructure v0.12.6 (available: v0.13.1)
[INFO] [stderr]       Adding zerocopy v0.3.2 (available: v0.7.35)
[INFO] [stderr]       Adding zerocopy-derive v0.2.0 (available: v0.7.35)
[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-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a554a5d12782764d2314aa75b7dbe6aba0576ec2beed57afb6d2233e0d350c45
[INFO] running `Command { std: "docker" "start" "-a" "a554a5d12782764d2314aa75b7dbe6aba0576ec2beed57afb6d2233e0d350c45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a554a5d12782764d2314aa75b7dbe6aba0576ec2beed57afb6d2233e0d350c45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a554a5d12782764d2314aa75b7dbe6aba0576ec2beed57afb6d2233e0d350c45", kill_on_drop: false }`
[INFO] [stdout] a554a5d12782764d2314aa75b7dbe6aba0576ec2beed57afb6d2233e0d350c45
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9fbaaf5850c9b3d1a0598b3dde6ef2372bbe6b4aca52ae963553bce88936cc99
[INFO] running `Command { std: "docker" "start" "-a" "9fbaaf5850c9b3d1a0598b3dde6ef2372bbe6b4aca52ae963553bce88936cc99", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling zerocopy-derive v0.2.0
[INFO] [stderr]     Checking zerocopy v0.3.2
[INFO] [stderr]     Checking polyfuse-kernel v0.1.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking polyfuse v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `mountopts` is never read
[INFO] [stdout]   --> src/conn.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Connection {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     mountopts: MountOptions,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Connection` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]  --> src/op.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct DecodeError {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 7 |     inner: crate::decoder::DecodeError,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `DecodeError` 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 `mountopts` is never read
[INFO] [stdout]   --> src/conn.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Connection {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     mountopts: MountOptions,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Connection` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]  --> src/op.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct DecodeError {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 7 |     inner: crate::decoder::DecodeError,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `DecodeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.69s
[INFO] running `Command { std: "docker" "inspect" "9fbaaf5850c9b3d1a0598b3dde6ef2372bbe6b4aca52ae963553bce88936cc99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fbaaf5850c9b3d1a0598b3dde6ef2372bbe6b4aca52ae963553bce88936cc99", kill_on_drop: false }`
[INFO] [stdout] 9fbaaf5850c9b3d1a0598b3dde6ef2372bbe6b4aca52ae963553bce88936cc99