[INFO] fetching crate yash-semantics 0.3.0...
[INFO] checking yash-semantics-0.3.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate yash-semantics 0.3.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate yash-semantics 0.3.0 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 yash-semantics 0.3.0
[INFO] finished tweaking crates.io crate yash-semantics 0.3.0
[INFO] tweaked toml for crates.io crate yash-semantics 0.3.0 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]     Updating crates.io index
[INFO] [stderr]      Locking 66 packages to latest compatible versions
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (available: v0.6.5)
[INFO] [stderr]       Adding nix v0.27.1 (available: v0.29.0)
[INFO] [stderr]       Adding unicode-width v0.1.14 (available: v0.2.0)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[INFO] [stderr]       Adding yash-env v0.2.1 (available: v0.4.0)
[INFO] [stderr]       Adding yash-env-test-helper v0.1.0 (available: v0.2.0)
[INFO] [stderr]       Adding yash-syntax v0.10.0 (available: v0.12.0)
[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] e1c4d54d92ed3df61e8b3951dbd0552693050ec9babfaba50d6fab41f989ad64
[INFO] running `Command { std: "docker" "start" "-a" "e1c4d54d92ed3df61e8b3951dbd0552693050ec9babfaba50d6fab41f989ad64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1c4d54d92ed3df61e8b3951dbd0552693050ec9babfaba50d6fab41f989ad64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1c4d54d92ed3df61e8b3951dbd0552693050ec9babfaba50d6fab41f989ad64", kill_on_drop: false }`
[INFO] [stdout] e1c4d54d92ed3df61e8b3951dbd0552693050ec9babfaba50d6fab41f989ad64
[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] f90ba5a61464ec89587fb2e3620fa82a0268ee1443cbf0b71e688cc52e880acd
[INFO] running `Command { std: "docker" "start" "-a" "f90ba5a61464ec89587fb2e3620fa82a0268ee1443cbf0b71e688cc52e880acd", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.17
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling darling_core v0.20.10
[INFO] [stderr]     Checking annotate-snippets v0.11.4
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]     Checking yash-quote v1.1.1
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking yash-fnmatch v1.1.1
[INFO] [stderr]     Checking yash-arith v0.2.1
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]    Compiling darling_macro v0.20.10
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]    Compiling darling v0.20.10
[INFO] [stderr]     Checking strum v0.26.3
[INFO] [stderr]    Compiling enumset_derive v0.10.0
[INFO] [stderr]     Checking yash-syntax v0.10.0
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking enumset v1.1.5
[INFO] [stderr]     Checking yash-env v0.2.1
[INFO] [stderr]     Checking yash-env-test-helper v0.1.0
[INFO] [stderr]     Checking yash-semantics v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.92s
[INFO] running `Command { std: "docker" "inspect" "f90ba5a61464ec89587fb2e3620fa82a0268ee1443cbf0b71e688cc52e880acd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f90ba5a61464ec89587fb2e3620fa82a0268ee1443cbf0b71e688cc52e880acd", kill_on_drop: false }`
[INFO] [stdout] f90ba5a61464ec89587fb2e3620fa82a0268ee1443cbf0b71e688cc52e880acd