[INFO] fetching crate guestfs 0.1.0-compat1.40.0...
[INFO] checking guestfs-0.1.0-compat1.40.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate guestfs 0.1.0-compat1.40.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate guestfs 0.1.0-compat1.40.0 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 guestfs 0.1.0-compat1.40.0
[INFO] finished tweaking crates.io crate guestfs 0.1.0-compat1.40.0
[INFO] tweaked toml for crates.io crate guestfs 0.1.0-compat1.40.0 written to /workspace/builds/worker-3-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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 19f8f6fc4438d7e65e4a26476895c8a24a42119e166506d63e831d4edda7dc5c
[INFO] running `Command { std: "docker" "start" "-a" "19f8f6fc4438d7e65e4a26476895c8a24a42119e166506d63e831d4edda7dc5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19f8f6fc4438d7e65e4a26476895c8a24a42119e166506d63e831d4edda7dc5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19f8f6fc4438d7e65e4a26476895c8a24a42119e166506d63e831d4edda7dc5c", kill_on_drop: false }`
[INFO] [stdout] 19f8f6fc4438d7e65e4a26476895c8a24a42119e166506d63e831d4edda7dc5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f6bd880bade3e6fff947756f3074ff88b45428982343a5562c599e13c13e88b6
[INFO] running `Command { std: "docker" "start" "-a" "f6bd880bade3e6fff947756f3074ff88b45428982343a5562c599e13c13e88b6", kill_on_drop: false }`
[INFO] [stderr]     Checking guestfs v0.1.0-compat1.40.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `operation`, `message`, and `errno` are never read
[INFO] [stdout]   --> src/error.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct APIError {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 35 |     operation: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 36 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 37 |     errno: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `APIError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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: fields `operation`, `message`, and `errno` are never read
[INFO] [stdout]   --> src/error.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct APIError {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 35 |     operation: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 36 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 37 |     errno: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `APIError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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: panic message is not a string literal
[INFO] [stdout]  --> src/bin/event_leak.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 |             Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]   = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]   = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]   |
[INFO] [stdout] 9 -             Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout] 9 +             Err(e) => panic!(" could not create handle {:?}", e),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/bin/bindtests.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 31 -         Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout] 31 +         Err(e) => panic!(" could not create handle {:?}", e),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/bin/event.rs:13:30
[INFO] [stdout]    |
[INFO] [stdout] 13 |             Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 13 -             Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout] 13 +             Err(e) => panic!(" could not create handle {:?}", e),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/bin/bindtests.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 31 -         Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout] 31 +         Err(e) => panic!(" could not create handle {:?}", e),
[INFO] [stdout]    |
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/bin/event.rs:13:30
[INFO] [stdout]    |
[INFO] [stdout] 13 |             Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 13 -             Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout] 13 +             Err(e) => panic!(" could not create handle {:?}", e),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]  --> src/bin/event_leak.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 |             Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]   = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]   = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]   |
[INFO] [stdout] 9 -             Err(e) => panic!(format!(" could not create handle {:?}", e)),
[INFO] [stdout] 9 +             Err(e) => panic!(" could not create handle {:?}", e),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.04s
[INFO] running `Command { std: "docker" "inspect" "f6bd880bade3e6fff947756f3074ff88b45428982343a5562c599e13c13e88b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6bd880bade3e6fff947756f3074ff88b45428982343a5562c599e13c13e88b6", kill_on_drop: false }`
[INFO] [stdout] f6bd880bade3e6fff947756f3074ff88b45428982343a5562c599e13c13e88b6