[INFO] cloning repository https://github.com/KeeganMyers/mshell [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KeeganMyers/mshell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeeganMyers%2Fmshell", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeeganMyers%2Fmshell'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 32861b45ccac1ac0752bd2645ca67bae8adc9bbc [INFO] checking KeeganMyers/mshell/32861b45ccac1ac0752bd2645ca67bae8adc9bbc 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%2FKeeganMyers%2Fmshell" "/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/KeeganMyers/mshell 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/KeeganMyers/mshell [INFO] finished tweaking git repo https://github.com/KeeganMyers/mshell [INFO] tweaked toml for git repo https://github.com/KeeganMyers/mshell written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/KeeganMyers/mshell 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] 3d74cff1fc6227dd6673a54553980d6d712fe7415b699887bac8e5144b9069c7 [INFO] running `Command { std: "docker" "start" "-a" "3d74cff1fc6227dd6673a54553980d6d712fe7415b699887bac8e5144b9069c7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3d74cff1fc6227dd6673a54553980d6d712fe7415b699887bac8e5144b9069c7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3d74cff1fc6227dd6673a54553980d6d712fe7415b699887bac8e5144b9069c7", kill_on_drop: false }` [INFO] [stdout] 3d74cff1fc6227dd6673a54553980d6d712fe7415b699887bac8e5144b9069c7 [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] 3d7c98a55a841dd8a4afa3a64199186594de6a8e3dde79d618486f397937ff78 [INFO] running `Command { std: "docker" "start" "-a" "3d7c98a55a841dd8a4afa3a64199186594de6a8e3dde79d618486f397937ff78", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.60 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Compiling log v0.4.7 [INFO] [stderr] Compiling bitflags v1.1.0 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Checking ucd-util v0.1.5 [INFO] [stderr] Compiling nix v0.14.1 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Checking utf8-ranges v1.0.3 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking utf8parse v0.1.1 [INFO] [stderr] Checking termcolor v1.0.5 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking unicode-segmentation v1.3.0 [INFO] [stderr] Checking humantime v1.2.0 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking regex-syntax v0.6.10 [INFO] [stderr] Checking aho-corasick v0.7.4 [INFO] [stderr] Checking dirs-sys v0.3.3 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Checking dirs v2.0.1 [INFO] [stderr] Checking regex v1.2.0 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Checking rustyline v5.0.0 [INFO] [stderr] Checking mshell v0.1.0 (/opt/rustwide/workdir) [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:100:5 [INFO] [stdout] | [INFO] [stdout] 85 | fn spawn_command(command: &str, args: I,commands: &mut Peekable

, previous_command: Option) -> Result [INFO] [stdout] | ------- ------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 90 | let stdin = previous_command [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 94 | let stdout = if commands.peek().is_some() { [INFO] [stdout] | ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 100 | Command::new(command) [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/main.rs:91:67 [INFO] [stdout] | [INFO] [stdout] 91 | .map_or(Stdio::inherit(), |output: Child| Stdio::from(output.stdout.unwrap()) [INFO] [stdout] | ------------- ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [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: 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:100:5 [INFO] [stdout] | [INFO] [stdout] 85 | fn spawn_command(command: &str, args: I,commands: &mut Peekable

, previous_command: Option) -> Result [INFO] [stdout] | ------- ------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 90 | let stdin = previous_command [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 94 | let stdout = if commands.peek().is_some() { [INFO] [stdout] | ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 100 | Command::new(command) [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/main.rs:91:67 [INFO] [stdout] | [INFO] [stdout] 91 | .map_or(Stdio::inherit(), |output: Child| Stdio::from(output.stdout.unwrap()) [INFO] [stdout] | ------------- ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [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] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:172:13 [INFO] [stdout] | [INFO] [stdout] 172 | final_command.wait(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 172 | let _ = final_command.wait(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:172:13 [INFO] [stdout] | [INFO] [stdout] 172 | final_command.wait(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 172 | let _ = final_command.wait(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mshell` (bin "mshell") due to 3 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `mshell` (bin "mshell" test) due to 3 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "3d7c98a55a841dd8a4afa3a64199186594de6a8e3dde79d618486f397937ff78", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3d7c98a55a841dd8a4afa3a64199186594de6a8e3dde79d618486f397937ff78", kill_on_drop: false }` [INFO] [stdout] 3d7c98a55a841dd8a4afa3a64199186594de6a8e3dde79d618486f397937ff78