[INFO] fetching crate cubic-protocol-server 0.1.9...
[INFO] checking cubic-protocol-server-0.1.9 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate cubic-protocol-server 0.1.9 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate cubic-protocol-server 0.1.9 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 cubic-protocol-server 0.1.9
[INFO] finished tweaking crates.io crate cubic-protocol-server 0.1.9
[INFO] tweaked toml for crates.io crate cubic-protocol-server 0.1.9 written to /workspace/builds/worker-0-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 58 packages to latest compatible versions
[INFO] [stderr]       Adding hermit-abi v0.3.9 (available: v0.4.0)
[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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 9cacb61a88b4014b89993550e940e6684b5894065678c38ea4c3ed6da995c8d9
[INFO] running `Command { std: "docker" "start" "-a" "9cacb61a88b4014b89993550e940e6684b5894065678c38ea4c3ed6da995c8d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cacb61a88b4014b89993550e940e6684b5894065678c38ea4c3ed6da995c8d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cacb61a88b4014b89993550e940e6684b5894065678c38ea4c3ed6da995c8d9", kill_on_drop: false }`
[INFO] [stdout] 9cacb61a88b4014b89993550e940e6684b5894065678c38ea4c3ed6da995c8d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7107ced8284fdca8afe9b945bcccd30fa5c9e8805249c1cfddde6e9dfb49aaf1
[INFO] running `Command { std: "docker" "start" "-a" "7107ced8284fdca8afe9b945bcccd30fa5c9e8805249c1cfddde6e9dfb49aaf1", kill_on_drop: false }`
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]     Checking quick-error v2.0.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking serde_bytes v0.11.15
[INFO] [stderr]     Checking uuid v1.10.0
[INFO] [stderr]     Checking cubic-chat v0.1.1
[INFO] [stderr]     Checking fastnbt v2.5.0
[INFO] [stderr]     Checking euclid v0.22.11
[INFO] [stderr]     Checking cubic-protocol v0.1.11
[INFO] [stderr]     Checking cubic-protocol-server v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::read`
[INFO] [stdout]  --> src/read.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::read`
[INFO] [stdout]  --> src/read.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.03s
[INFO] running `Command { std: "docker" "inspect" "7107ced8284fdca8afe9b945bcccd30fa5c9e8805249c1cfddde6e9dfb49aaf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7107ced8284fdca8afe9b945bcccd30fa5c9e8805249c1cfddde6e9dfb49aaf1", kill_on_drop: false }`
[INFO] [stdout] 7107ced8284fdca8afe9b945bcccd30fa5c9e8805249c1cfddde6e9dfb49aaf1