[INFO] cloning repository https://github.com/Ndeta100/error_handling_rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ndeta100/error_handling_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNdeta100%2Ferror_handling_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNdeta100%2Ferror_handling_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9cd3e5dd9c9230c6524c0edbc90abf9f8c09b7c7 [INFO] checking Ndeta100/error_handling_rust/9cd3e5dd9c9230c6524c0edbc90abf9f8c09b7c7 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%2FNdeta100%2Ferror_handling_rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Ndeta100/error_handling_rust 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/Ndeta100/error_handling_rust [INFO] finished tweaking git repo https://github.com/Ndeta100/error_handling_rust [INFO] tweaked toml for git repo https://github.com/Ndeta100/error_handling_rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Ndeta100/error_handling_rust 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b9af4ea12475354ffc03e7fd6e5c74e594211399f4c7c835c768f131fe407641 [INFO] running `Command { std: "docker" "start" "-a" "b9af4ea12475354ffc03e7fd6e5c74e594211399f4c7c835c768f131fe407641", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b9af4ea12475354ffc03e7fd6e5c74e594211399f4c7c835c768f131fe407641", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b9af4ea12475354ffc03e7fd6e5c74e594211399f4c7c835c768f131fe407641", kill_on_drop: false }` [INFO] [stdout] b9af4ea12475354ffc03e7fd6e5c74e594211399f4c7c835c768f131fe407641 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] a81e2a05c132cbe2d3e021cfcc58647db6a99c6fa6e99b8fd9d7db7e7454c31d [INFO] running `Command { std: "docker" "start" "-a" "a81e2a05c132cbe2d3e021cfcc58647db6a99c6fa6e99b8fd9d7db7e7454c31d", kill_on_drop: false }` [INFO] [stderr] Checking error_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `r` [INFO] [stdout] --> src/main.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let r = File::open("herllo.text").expect("Failed to open"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_file_long_way` is never used [INFO] [stdout] --> src/main.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn read_username_file_long_way() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_short_way` is never used [INFO] [stdout] --> src/main.rs:35:4 [INFO] [stdout] | [INFO] [stdout] 35 | fn read_username_from_file_short_way() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_shorter_way` is never used [INFO] [stdout] --> src/main.rs:41:4 [INFO] [stdout] | [INFO] [stdout] 41 | fn read_username_from_file_shorter_way() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_shortest_way` is never used [INFO] [stdout] --> src/main.rs:46:4 [INFO] [stdout] | [INFO] [stdout] 46 | fn read_username_from_file_shortest_way() -> Result { [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/main.rs:30:11 [INFO] [stdout] | [INFO] [stdout] 24 | let f = File::open("Hello.txt"); [INFO] [stdout] | - these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 25 | let mut f = match f { [INFO] [stdout] | - these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 26 | Ok(file) => file, [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 27 | Err(e) => return Err(e), [INFO] [stdout] | - these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 30 | match f.read_to_string(&mut s) { [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: aborting due to 1 previous error; 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `error_rust` (bin "error_rust" test) due to 2 previous errors; 5 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused variable: `r` [INFO] [stdout] --> src/main.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let r = File::open("herllo.text").expect("Failed to open"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_file_long_way` is never used [INFO] [stdout] --> src/main.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn read_username_file_long_way() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_short_way` is never used [INFO] [stdout] --> src/main.rs:35:4 [INFO] [stdout] | [INFO] [stdout] 35 | fn read_username_from_file_short_way() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_shorter_way` is never used [INFO] [stdout] --> src/main.rs:41:4 [INFO] [stdout] | [INFO] [stdout] 41 | fn read_username_from_file_shorter_way() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_shortest_way` is never used [INFO] [stdout] --> src/main.rs:46:4 [INFO] [stdout] | [INFO] [stdout] 46 | fn read_username_from_file_shortest_way() -> Result { [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/main.rs:30:11 [INFO] [stdout] | [INFO] [stdout] 24 | let f = File::open("Hello.txt"); [INFO] [stdout] | - these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 25 | let mut f = match f { [INFO] [stdout] | - these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 26 | Ok(file) => file, [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 27 | Err(e) => return Err(e), [INFO] [stdout] | - these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 30 | match f.read_to_string(&mut s) { [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: aborting due to 1 previous error; 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `error_rust` (bin "error_rust") due to 2 previous errors; 5 warnings emitted [INFO] running `Command { std: "docker" "inspect" "a81e2a05c132cbe2d3e021cfcc58647db6a99c6fa6e99b8fd9d7db7e7454c31d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a81e2a05c132cbe2d3e021cfcc58647db6a99c6fa6e99b8fd9d7db7e7454c31d", kill_on_drop: false }` [INFO] [stdout] a81e2a05c132cbe2d3e021cfcc58647db6a99c6fa6e99b8fd9d7db7e7454c31d