[INFO] fetching crate jobslot 0.2.19...
[INFO] checking jobslot-0.2.19 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate jobslot 0.2.19 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate jobslot 0.2.19 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 jobslot 0.2.19
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate jobslot 0.2.19
[INFO] tweaked toml for crates.io crate jobslot 0.2.19 written to /workspace/builds/worker-2-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 50 packages to latest compatible versions
[INFO] [stderr]       Adding hermit-abi v0.3.9 (available: v0.4.0)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (available: v0.6.5)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 537bd5336a2b5518fdd20626a5500aa24ecf00b3713ffab2bbeae047876dc417
[INFO] running `Command { std: "docker" "start" "-a" "537bd5336a2b5518fdd20626a5500aa24ecf00b3713ffab2bbeae047876dc417", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "537bd5336a2b5518fdd20626a5500aa24ecf00b3713ffab2bbeae047876dc417", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "537bd5336a2b5518fdd20626a5500aa24ecf00b3713ffab2bbeae047876dc417", kill_on_drop: false }`
[INFO] [stdout] 537bd5336a2b5518fdd20626a5500aa24ecf00b3713ffab2bbeae047876dc417
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] cb43681f4b56de093f41da4af3dba2dce218b6eeaea6d392c80317c2e35eb6f6
[INFO] running `Command { std: "docker" "start" "-a" "cb43681f4b56de093f41da4af3dba2dce218b6eeaea6d392c80317c2e35eb6f6", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling derive_destructure2 v0.1.3
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]     Checking jobslot v0.2.19 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio v1.40.0
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:713:13
[INFO] [stdout]     |
[INFO] [stdout] 713 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/lib.rs:713:13
[INFO] [stdout]     |
[INFO] [stdout] 704 |             Self::IncompatibleWithOlderMake(_) => f.write_str(
[INFO] [stdout]     |             ---------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 711 |             Self::IoError(io_error) => write!(f, "io error: {}", io_error),
[INFO] [stdout]     |             ----------------------- matches some of the same values
[INFO] [stdout] 712 |
[INFO] [stdout] 713 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:713:13
[INFO] [stdout]     |
[INFO] [stdout] 713 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/lib.rs:713:13
[INFO] [stdout]     |
[INFO] [stdout] 704 |             Self::IncompatibleWithOlderMake(_) => f.write_str(
[INFO] [stdout]     |             ---------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 711 |             Self::IoError(io_error) => write!(f, "io error: {}", io_error),
[INFO] [stdout]     |             ----------------------- matches some of the same values
[INFO] [stdout] 712 |
[INFO] [stdout] 713 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.69s
[INFO] running `Command { std: "docker" "inspect" "cb43681f4b56de093f41da4af3dba2dce218b6eeaea6d392c80317c2e35eb6f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb43681f4b56de093f41da4af3dba2dce218b6eeaea6d392c80317c2e35eb6f6", kill_on_drop: false }`
[INFO] [stdout] cb43681f4b56de093f41da4af3dba2dce218b6eeaea6d392c80317c2e35eb6f6