[INFO] fetching crate lua_engine 0.1.1...
[INFO] testing lua_engine-0.1.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate lua_engine 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate lua_engine 0.1.1
[INFO] finished tweaking crates.io crate lua_engine 0.1.1
[INFO] tweaked toml for crates.io crate lua_engine 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lua_engine 0.1.1 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7192b46b8ffddd2f52bfa018098e5a79682f9dbcb77e3c86be0885ba8d615bca
[INFO] running `Command { std: "docker" "start" "-a" "7192b46b8ffddd2f52bfa018098e5a79682f9dbcb77e3c86be0885ba8d615bca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7192b46b8ffddd2f52bfa018098e5a79682f9dbcb77e3c86be0885ba8d615bca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7192b46b8ffddd2f52bfa018098e5a79682f9dbcb77e3c86be0885ba8d615bca", kill_on_drop: false }`
[INFO] [stdout] 7192b46b8ffddd2f52bfa018098e5a79682f9dbcb77e3c86be0885ba8d615bca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52e687ddfeccc1e2fcba15e3279f8a16c0697d7a1ba38d6289bb1574278b6218
[INFO] running `Command { std: "docker" "start" "-a" "52e687ddfeccc1e2fcba15e3279f8a16c0697d7a1ba38d6289bb1574278b6218", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling lua_engine_macros v0.1.0
[INFO] [stderr]    Compiling lua_engine v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/parsing/lexer.rs:189:24
[INFO] [stdout]     |
[INFO] [stdout] 189 |                     if let Some(other_character) = self.peek_char() && other_character == '=' {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/parsing/lexer.rs:198:24
[INFO] [stdout]     |
[INFO] [stdout] 198 |                     if let Some(other_character) = self.peek_char() && other_character == '=' {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/parsing/lexer.rs:202:29
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     else if let Some(other_character) = self.peek_char() && other_character == '<' {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/parsing/lexer.rs:210:24
[INFO] [stdout]     |
[INFO] [stdout] 210 |                     if let Some(other_character) = self.peek_char() && other_character == '=' {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/parsing/lexer.rs:214:29
[INFO] [stdout]     |
[INFO] [stdout] 214 |                     else if let Some(other_character) = self.peek_char() && other_character == '>' {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/parsing/lexer.rs:224:35
[INFO] [stdout]     |
[INFO] [stdout] 224 | ...                   while let Some(ch) = self.ch && ch != '\n' {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/parsing/lexer.rs:277:15
[INFO] [stdout]     |
[INFO] [stdout] 277 |         while let Some(ch) = self.ch && ch.is_whitespace() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/parsing/lexer.rs:324:16
[INFO] [stdout]     |
[INFO] [stdout] 324 |             if let Some(next_char) = self.peek_char() && ch == '0' && next_char == 'x' {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/evaluation/typing.rs:94:16
[INFO] [stdout]    |
[INFO] [stdout] 94 |             if let Value::Boolean(l) = self && let Value::Boolean(r) = val{
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/evaluation/typing.rs:94:48
[INFO] [stdout]    |
[INFO] [stdout] 94 |             if let Value::Boolean(l) = self && let Value::Boolean(r) = val{
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/evaluation/typing.rs:99:16
[INFO] [stdout]    |
[INFO] [stdout] 99 |             if let Value::Number(NumberType::Int(l)) = self && let Value::Number(NumberType::Int(r)) = val{
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/evaluation/typing.rs:99:64
[INFO] [stdout]    |
[INFO] [stdout] 99 |             if let Value::Number(NumberType::Int(l)) = self && let Value::Number(NumberType::Int(r)) = val{
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/evaluation/typing.rs:113:16
[INFO] [stdout]     |
[INFO] [stdout] 113 |             if let Value::Number(NumberType::Int(l)) = self && let Value::Number(NumberType::Int(r)) = val{
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/evaluation/typing.rs:113:64
[INFO] [stdout]     |
[INFO] [stdout] 113 |             if let Value::Number(NumberType::Int(l)) = self && let Value::Number(NumberType::Int(r)) = val{
[INFO] [stdout]     |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/evaluation/typing.rs:129:16
[INFO] [stdout]     |
[INFO] [stdout] 129 |             if let Value::Number(NumberType::Int(l)) = self && let Value::Number(NumberType::Int(r)) = val{
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/evaluation/typing.rs:129:64
[INFO] [stdout]     |
[INFO] [stdout] 129 |             if let Value::Number(NumberType::Int(l)) = self && let Value::Number(NumberType::Int(r)) = val{
[INFO] [stdout]     |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lua_engine` (lib) due to 16 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "52e687ddfeccc1e2fcba15e3279f8a16c0697d7a1ba38d6289bb1574278b6218", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52e687ddfeccc1e2fcba15e3279f8a16c0697d7a1ba38d6289bb1574278b6218", kill_on_drop: false }`
[INFO] [stdout] 52e687ddfeccc1e2fcba15e3279f8a16c0697d7a1ba38d6289bb1574278b6218