[INFO] fetching crate rclio 0.0.3...
[INFO] checking rclio-0.0.3 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate rclio 0.0.3 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate rclio 0.0.3 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 rclio 0.0.3
[INFO] finished tweaking crates.io crate rclio 0.0.3
[INFO] tweaked toml for crates.io crate rclio 0.0.3 written to /workspace/builds/worker-7-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]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding windows-sys v0.48.0 (available: v0.59.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (available: v0.52.6)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e11ccc113374070b9752b9f047e24d7a5cdc31ae4d2538515521948010f7a109
[INFO] running `Command { std: "docker" "start" "-a" "e11ccc113374070b9752b9f047e24d7a5cdc31ae4d2538515521948010f7a109", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e11ccc113374070b9752b9f047e24d7a5cdc31ae4d2538515521948010f7a109", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e11ccc113374070b9752b9f047e24d7a5cdc31ae4d2538515521948010f7a109", kill_on_drop: false }`
[INFO] [stdout] e11ccc113374070b9752b9f047e24d7a5cdc31ae4d2538515521948010f7a109
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 06a02c961e407bf0e6dd61936d6b746ced32f27893a1d7d51411931e38196c73
[INFO] running `Command { std: "docker" "start" "-a" "06a02c961e407bf0e6dd61936d6b746ced32f27893a1d7d51411931e38196c73", kill_on_drop: false }`
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking rtoolbox v0.0.2
[INFO] [stderr]     Checking rprompt v2.1.1
[INFO] [stderr]     Checking rpassword v7.3.1
[INFO] [stderr]     Checking rclio v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `stdin_lock` is never read
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct RegularInputOutput<'a> {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] 19 |     stdin_lock: StdinLock<'a>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stdin_lock` is never read
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct RegularInputOutput<'a> {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] 19 |     stdin_lock: StdinLock<'a>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 0.48s
[INFO] running `Command { std: "docker" "inspect" "06a02c961e407bf0e6dd61936d6b746ced32f27893a1d7d51411931e38196c73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06a02c961e407bf0e6dd61936d6b746ced32f27893a1d7d51411931e38196c73", kill_on_drop: false }`
[INFO] [stdout] 06a02c961e407bf0e6dd61936d6b746ced32f27893a1d7d51411931e38196c73