[INFO] fetching crate lua_semantics 0.9.0...
[INFO] testing lua_semantics-0.9.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate lua_semantics 0.9.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate lua_semantics 0.9.0
[INFO] finished tweaking crates.io crate lua_semantics 0.9.0
[INFO] tweaked toml for crates.io crate lua_semantics 0.9.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lua_semantics 0.9.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lua_semantics 0.9.0 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusty_lr v3.27.0
[INFO] [stderr]   Downloaded rusty_lr_core v3.32.0
[INFO] [stderr]   Downloaded lua_tokenizer v0.5.0
[INFO] [stderr]   Downloaded lua_parser v0.10.0
[INFO] [stderr]   Downloaded rusty_lr_derive v2.35.0
[INFO] [stderr]   Downloaded rusty_lr_parser v3.56.0
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbe2ccd6cf19ff2bd0a16597332cf1ac876ee8bd2b4459be78478b51d49b445c
[INFO] running `Command { std: "docker" "start" "-a" "fbe2ccd6cf19ff2bd0a16597332cf1ac876ee8bd2b4459be78478b51d49b445c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbe2ccd6cf19ff2bd0a16597332cf1ac876ee8bd2b4459be78478b51d49b445c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbe2ccd6cf19ff2bd0a16597332cf1ac876ee8bd2b4459be78478b51d49b445c", kill_on_drop: false }`
[INFO] [stdout] fbe2ccd6cf19ff2bd0a16597332cf1ac876ee8bd2b4459be78478b51d49b445c
[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" "-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" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c23d14050dbd02626743738509cd515013932a917711b5b83272e8fb42e4e32
[INFO] running `Command { std: "docker" "start" "-a" "0c23d14050dbd02626743738509cd515013932a917711b5b83272e8fb42e4e32", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty_lr_core v3.32.0
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling lua_tokenizer v0.5.0
[INFO] [stderr]    Compiling rusty_lr_parser v3.56.0
[INFO] [stderr]    Compiling rusty_lr_derive v2.35.0
[INFO] [stderr]    Compiling rusty_lr v3.27.0
[INFO] [stderr]    Compiling lua_parser v0.10.0
[INFO] [stderr]    Compiling lua_semantics v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.20s
[INFO] running `Command { std: "docker" "inspect" "0c23d14050dbd02626743738509cd515013932a917711b5b83272e8fb42e4e32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c23d14050dbd02626743738509cd515013932a917711b5b83272e8fb42e4e32", kill_on_drop: false }`
[INFO] [stdout] 0c23d14050dbd02626743738509cd515013932a917711b5b83272e8fb42e4e32
[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" "-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" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f974c9f70505f4e53ca835acf6490b57aad2224552e91296b5d74a56f0657dc7
[INFO] running `Command { std: "docker" "start" "-a" "f974c9f70505f4e53ca835acf6490b57aad2224552e91296b5d74a56f0657dc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling lua_semantics v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "f974c9f70505f4e53ca835acf6490b57aad2224552e91296b5d74a56f0657dc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f974c9f70505f4e53ca835acf6490b57aad2224552e91296b5d74a56f0657dc7", kill_on_drop: false }`
[INFO] [stdout] f974c9f70505f4e53ca835acf6490b57aad2224552e91296b5d74a56f0657dc7
[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" "-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" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 119c32bd93fca1e9dbf9e93eec0d2c0ef878c9b129dfc8a81ac1fe831391a194
[INFO] running `Command { std: "docker" "start" "-a" "119c32bd93fca1e9dbf9e93eec0d2c0ef878c9b129dfc8a81ac1fe831391a194", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lua_semantics-bc29aa30878beb18)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lua_semantics
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 1) ... FAILED
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 1) stdout ----
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]  --> src/lib.rs:4:36
[INFO] [stdout]   |
[INFO] [stdout] 4 | let block = lua_parser::parse_str( ... )?;
[INFO] [stdout]   |                                    ^^^
[INFO] [stdout]   |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]   |
[INFO] [stdout] 4 - let block = lua_parser::parse_str( ... )?;
[INFO] [stdout] 4 + let block = lua_parser::parse_str( .. )?;
[INFO] [stdout]   |
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]   |
[INFO] [stdout] 4 - let block = lua_parser::parse_str( ... )?;
[INFO] [stdout] 4 + let block = lua_parser::parse_str( ..= )?;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0586]: inclusive range with no end
[INFO] [stdout]  --> src/lib.rs:4:36
[INFO] [stdout]   |
[INFO] [stdout] 4 | let block = lua_parser::parse_str( ... )?;
[INFO] [stdout]   |                                    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
[INFO] [stdout] help: use `..` instead
[INFO] [stdout]   |
[INFO] [stdout] 4 - let block = lua_parser::parse_str( ... )?;
[INFO] [stdout] 4 + let block = lua_parser::parse_str( .. )?;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/lib.rs:4:41
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_1_0() {
[INFO] [stdout]   |                                      --------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 3 | // type of `lua_parser::Block`
[INFO] [stdout] 4 | let block = lua_parser::parse_str( ... )?;
[INFO] [stdout]   |                                         ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 2 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_1_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 3 | // type of `lua_parser::Block`
[INFO] [stdout] ...
[INFO] [stdout] 7 | let enhanced_ast = lua_semantics::process(block)?;
[INFO] [stdout] 8 +     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/lib.rs:7:49
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_1_0() {
[INFO] [stdout]   |                                      --------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 7 | let enhanced_ast = lua_semantics::process(block)?;
[INFO] [stdout]   |                                                 ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 2 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_1_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 3 | // type of `lua_parser::Block`
[INFO] [stdout] ...
[INFO] [stdout] 7 | let enhanced_ast = lua_semantics::process(block)?;
[INFO] [stdout] 8 +     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0586.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 1)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.25s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "119c32bd93fca1e9dbf9e93eec0d2c0ef878c9b129dfc8a81ac1fe831391a194", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "119c32bd93fca1e9dbf9e93eec0d2c0ef878c9b129dfc8a81ac1fe831391a194", kill_on_drop: false }`
[INFO] [stdout] 119c32bd93fca1e9dbf9e93eec0d2c0ef878c9b129dfc8a81ac1fe831391a194