[INFO] fetching crate mc-build-rs 0.1.0...
[INFO] checking mc-build-rs-0.1.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate mc-build-rs 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate mc-build-rs 0.1.0 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] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate mc-build-rs 0.1.0
[INFO] finished tweaking crates.io crate mc-build-rs 0.1.0
[INFO] tweaked toml for crates.io crate mc-build-rs 0.1.0 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]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 67 packages to latest compatible versions
[INFO] [stderr]       Adding float-cmp v0.9.0 (available: v0.10.0)
[INFO] [stderr]       Adding idna v0.5.0 (available: v1.0.2)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.13.0)
[INFO] [stderr]       Adding mockall v0.11.4 (available: v0.13.0)
[INFO] [stderr]       Adding mockall_derive v0.11.4 (available: v0.13.0)
[INFO] [stderr]       Adding predicates v2.1.5 (available: v3.1.2)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.79)
[INFO] [stderr]       Adding termtree v0.4.1 (available: v0.5.1)
[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] 56a0202868fefdfa31c639ec729763b95ced26ac847931e182d2e5fea00443e6
[INFO] running `Command { std: "docker" "start" "-a" "56a0202868fefdfa31c639ec729763b95ced26ac847931e182d2e5fea00443e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56a0202868fefdfa31c639ec729763b95ced26ac847931e182d2e5fea00443e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56a0202868fefdfa31c639ec729763b95ced26ac847931e182d2e5fea00443e6", kill_on_drop: false }`
[INFO] [stdout] 56a0202868fefdfa31c639ec729763b95ced26ac847931e182d2e5fea00443e6
[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] 45d8cb311686a66d8b495727f2ced2403c058c9c3e0b7fc1f30e487a1bcd53d3
[INFO] running `Command { std: "docker" "start" "-a" "45d8cb311686a66d8b495727f2ced2403c058c9c3e0b7fc1f30e487a1bcd53d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking predicates-core v1.0.8
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking cargo-emit v0.2.1
[INFO] [stderr]     Checking fragile v2.0.0
[INFO] [stderr]     Checking downcast v0.11.0
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling mockall_derive v0.11.4
[INFO] [stderr]     Checking temp-env v0.3.6
[INFO] [stderr]     Checking predicates-tree v1.0.11
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking fluent-asserter v0.1.9
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling mockall_double v0.3.1
[INFO] [stderr]     Checking predicates v2.1.5
[INFO] [stderr]     Checking mc-build-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking mockall v0.11.4
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.02s
[INFO] running `Command { std: "docker" "inspect" "45d8cb311686a66d8b495727f2ced2403c058c9c3e0b7fc1f30e487a1bcd53d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45d8cb311686a66d8b495727f2ced2403c058c9c3e0b7fc1f30e487a1bcd53d3", kill_on_drop: false }`
[INFO] [stdout] 45d8cb311686a66d8b495727f2ced2403c058c9c3e0b7fc1f30e487a1bcd53d3