[INFO] cloning repository https://github.com/greenhandzpx/pascal-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/greenhandzpx/pascal-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgreenhandzpx%2Fpascal-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgreenhandzpx%2Fpascal-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3597f21d219b53e30ee45647f1983c22e66b34c5
[INFO] building greenhandzpx/pascal-interpreter against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgreenhandzpx%2Fpascal-interpreter" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/greenhandzpx/pascal-interpreter on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/greenhandzpx/pascal-interpreter
[INFO] finished tweaking git repo https://github.com/greenhandzpx/pascal-interpreter
[INFO] tweaked toml for git repo https://github.com/greenhandzpx/pascal-interpreter written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/greenhandzpx/pascal-interpreter 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c24ff4c41cc89783bcee190aaf2f135cde51ea49da41935dc1ea8312d0cfe6de
[INFO] running `Command { std: "docker" "start" "-a" "c24ff4c41cc89783bcee190aaf2f135cde51ea49da41935dc1ea8312d0cfe6de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c24ff4c41cc89783bcee190aaf2f135cde51ea49da41935dc1ea8312d0cfe6de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c24ff4c41cc89783bcee190aaf2f135cde51ea49da41935dc1ea8312d0cfe6de", kill_on_drop: false }`
[INFO] [stdout] c24ff4c41cc89783bcee190aaf2f135cde51ea49da41935dc1ea8312d0cfe6de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ce81fd19b654705029794895a0dc9f0a57dee0118b5f41cebb5eaa542210644
[INFO] running `Command { std: "docker" "start" "-a" "8ce81fd19b654705029794895a0dc9f0a57dee0118b5f41cebb5eaa542210644", kill_on_drop: false }`
[INFO] [stderr]    Compiling caculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: `let` expressions in this position are unstable
[INFO] [stdout]   --> src/main.rs:49:15
[INFO] [stdout]    |
[INFO] [stdout] 49 |         while let Some(ch) = self.current_char && ch == ' ' {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stdout]    = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2024-12-19; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `let` expressions in this position are unstable
[INFO] [stdout]   --> src/main.rs:55:15
[INFO] [stdout]    |
[INFO] [stdout] 55 |         while let Some(ch) = self.current_char && ch.is_digit(10) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stdout]    = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2024-12-19; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `let` expressions in this position are unstable
[INFO] [stdout]    --> src/ast/ast.rs:106:15
[INFO] [stdout]     |
[INFO] [stdout] 106 |         while let Some(ch) = self.current_char && ch == ' ' {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stdout]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2024-12-19; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `let` expressions in this position are unstable
[INFO] [stdout]    --> src/ast/ast.rs:112:15
[INFO] [stdout]     |
[INFO] [stdout] 112 |         while let Some(ch) = self.current_char && ch.is_digit(10) {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stdout]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2024-12-19; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/ast/ast.rs:246:21
[INFO] [stdout]     |
[INFO] [stdout] 246 |     fn visit(&self, node: Rc<dyn AstNode>) -> i32 {
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `caculator` (bin "caculator") due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "8ce81fd19b654705029794895a0dc9f0a57dee0118b5f41cebb5eaa542210644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ce81fd19b654705029794895a0dc9f0a57dee0118b5f41cebb5eaa542210644", kill_on_drop: false }`
[INFO] [stdout] 8ce81fd19b654705029794895a0dc9f0a57dee0118b5f41cebb5eaa542210644