[INFO] cloning repository https://github.com/andreasatle/rust-programming-principles [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andreasatle/rust-programming-principles" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandreasatle%2Frust-programming-principles", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandreasatle%2Frust-programming-principles'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 448bf3e15e48add2999fa37449f33b67e1a1acad [INFO] checking andreasatle/rust-programming-principles/448bf3e15e48add2999fa37449f33b67e1a1acad against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandreasatle%2Frust-programming-principles" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/andreasatle/rust-programming-principles on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/andreasatle/rust-programming-principles [INFO] finished tweaking git repo https://github.com/andreasatle/rust-programming-principles [INFO] tweaked toml for git repo https://github.com/andreasatle/rust-programming-principles written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/andreasatle/rust-programming-principles already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6758e29a2187bf76b68f5fd90d041a96f8cf7ac84f8e72dbe5b23d3850b85646 [INFO] running `Command { std: "docker" "start" "-a" "6758e29a2187bf76b68f5fd90d041a96f8cf7ac84f8e72dbe5b23d3850b85646", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6758e29a2187bf76b68f5fd90d041a96f8cf7ac84f8e72dbe5b23d3850b85646", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6758e29a2187bf76b68f5fd90d041a96f8cf7ac84f8e72dbe5b23d3850b85646", kill_on_drop: false }` [INFO] [stdout] 6758e29a2187bf76b68f5fd90d041a96f8cf7ac84f8e72dbe5b23d3850b85646 [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0861d1946685c1b821a4238d9408d18a0c8043900cc2f64a0cd0f33aa30fd8ff [INFO] running `Command { std: "docker" "start" "-a" "0861d1946685c1b821a4238d9408d18a0c8043900cc2f64a0cd0f33aa30fd8ff", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.36 [INFO] [stderr] Compiling serde v1.0.136 [INFO] [stderr] Compiling syn v1.0.86 [INFO] [stderr] Compiling serde_derive v1.0.136 [INFO] [stderr] Compiling serde_json v1.0.78 [INFO] [stderr] Checking ryu v1.0.9 [INFO] [stderr] Checking itoa v1.0.1 [INFO] [stderr] Compiling quote v1.0.15 [INFO] [stderr] Checking rust-programming-principles v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/transaction.rs:6:15 [INFO] [stdout] | [INFO] [stdout] 6 | LoadError(std::io::Error), [INFO] [stdout] | --------- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `TransactionError` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 6 | LoadError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/transaction.rs:7:16 [INFO] [stdout] | [INFO] [stdout] 7 | ParseError(serde_json::Error), [INFO] [stdout] | ---------- ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `TransactionError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 7 | ParseError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/transaction.rs:54:28 [INFO] [stdout] | [INFO] [stdout] 54 | .and_then(|ld| serde_json::from_str(&ld).map_err(|e| e.to_string())) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/transaction.rs:61:28 [INFO] [stdout] | [INFO] [stdout] 61 | .and_then(|ld| serde_json::from_str(&ld).map_err(|e| e.into())) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/transaction.rs:6:15 [INFO] [stdout] | [INFO] [stdout] 6 | LoadError(std::io::Error), [INFO] [stdout] | --------- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `TransactionError` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 6 | LoadError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/transaction.rs:7:16 [INFO] [stdout] | [INFO] [stdout] 7 | ParseError(serde_json::Error), [INFO] [stdout] | ---------- ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `TransactionError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 7 | ParseError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/transaction.rs:54:28 [INFO] [stdout] | [INFO] [stdout] 54 | .and_then(|ld| serde_json::from_str(&ld).map_err(|e| e.to_string())) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/transaction.rs:61:28 [INFO] [stdout] | [INFO] [stdout] 61 | .and_then(|ld| serde_json::from_str(&ld).map_err(|e| e.into())) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-programming-principles` (bin "rust-programming-principles") due to 3 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `rust-programming-principles` (bin "rust-programming-principles" test) due to 3 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "0861d1946685c1b821a4238d9408d18a0c8043900cc2f64a0cd0f33aa30fd8ff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0861d1946685c1b821a4238d9408d18a0c8043900cc2f64a0cd0f33aa30fd8ff", kill_on_drop: false }` [INFO] [stdout] 0861d1946685c1b821a4238d9408d18a0c8043900cc2f64a0cd0f33aa30fd8ff