[INFO] cloning repository https://github.com/lucassimpson0213/lox-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lucassimpson0213/lox-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucassimpson0213%2Flox-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucassimpson0213%2Flox-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac16d9f9b532b679a24f970b8ee17e742fb270d5
[INFO] fixing lucassimpson0213/lox-interpreter against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucassimpson0213%2Flox-interpreter" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lucassimpson0213/lox-interpreter
[INFO] finished tweaking git repo https://github.com/lucassimpson0213/lox-interpreter
[INFO] tweaked toml for git repo https://github.com/lucassimpson0213/lox-interpreter written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lucassimpson0213/lox-interpreter on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lucassimpson0213/lox-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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] a2df30a0aefe70da5d8fbdb45efe653f3866195f78e0b852d90e5cd8f1186430
[INFO] running `Command { std: "docker" "start" "a2df30a0aefe70da5d8fbdb45efe653f3866195f78e0b852d90e5cd8f1186430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a2df30a0aefe70da5d8fbdb45efe653f3866195f78e0b852d90e5cd8f1186430" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2df30a0aefe70da5d8fbdb45efe653f3866195f78e0b852d90e5cd8f1186430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a2df30a0aefe70da5d8fbdb45efe653f3866195f78e0b852d90e5cd8f1186430" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]     Checking lox-interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `leftparen` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |         leftparen,
[INFO] [stdout]     |         ^^^^^^^^^ help: convert the identifier to upper camel case: `Leftparen`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `leftparen` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |         leftparen,
[INFO] [stdout]     |         ^^^^^^^^^ help: convert the identifier to upper camel case: `Leftparen`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 | /             match c {
[INFO] [stdout] 76 | |                 Some(character) => {
[INFO] [stdout] 77 | |                     return Ok(*character);
[INFO] [stdout] ...  |
[INFO] [stdout] 80 | |             }
[INFO] [stdout]    | |_____________^ expected `()`, found `Result<_, ()>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]                    found enum `Result<_, ()>`
[INFO] [stdout] help: use the `?` operator to extract the `Result<_, ()>` value, propagating a `Result::Err` value to the caller
[INFO] [stdout]    |
[INFO] [stdout] 80 |             }?
[INFO] [stdout]    |              +
[INFO] [stdout] help: consider using a semicolon here
[INFO] [stdout]    |
[INFO] [stdout] 80 |             };
[INFO] [stdout]    |              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 82 |             match c {
[INFO] [stdout]    |                   - this expression has type `Option<&char>`
[INFO] [stdout] 83 |                 ';' => {}
[INFO] [stdout]    |                 ^^^ expected `Option<&char>`, found `char`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Option<&char>`
[INFO] [stdout]               found type `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:83:24
[INFO] [stdout]    |
[INFO] [stdout] 83 |                 ';' => {}
[INFO] [stdout]    |                        ^^ expected `Result<char, Error>`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Result<char, std::io::Error>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:84:22
[INFO] [stdout]    |
[INFO] [stdout] 84 |                   _ => {
[INFO] [stdout]    |  ______________________^
[INFO] [stdout] 85 | |                     println!("default case");
[INFO] [stdout] 86 | |                 }
[INFO] [stdout]    | |_________________^ expected `Result<char, Error>`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Result<char, std::io::Error>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]   --> src/main.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn run(source: &str) {}
[INFO] [stdout]    |        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read_line`
[INFO] [stdout]   --> src/main.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let read_line = std::io::stdin().read_line(&mut input_string).unwrap();
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_read_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 | /             match c {
[INFO] [stdout] 76 | |                 Some(character) => {
[INFO] [stdout] 77 | |                     return Ok(*character);
[INFO] [stdout] ...  |
[INFO] [stdout] 80 | |             }
[INFO] [stdout]    | |_____________^ expected `()`, found `Result<_, ()>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]                    found enum `Result<_, ()>`
[INFO] [stdout] help: use the `?` operator to extract the `Result<_, ()>` value, propagating a `Result::Err` value to the caller
[INFO] [stdout]    |
[INFO] [stdout] 80 |             }?
[INFO] [stdout]    |              +
[INFO] [stdout] help: consider using a semicolon here
[INFO] [stdout]    |
[INFO] [stdout] 80 |             };
[INFO] [stdout]    |              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 82 |             match c {
[INFO] [stdout]    |                   - this expression has type `Option<&char>`
[INFO] [stdout] 83 |                 ';' => {}
[INFO] [stdout]    |                 ^^^ expected `Option<&char>`, found `char`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Option<&char>`
[INFO] [stdout]               found type `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:83:24
[INFO] [stdout]    |
[INFO] [stdout] 83 |                 ';' => {}
[INFO] [stdout]    |                        ^^ expected `Result<char, Error>`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Result<char, std::io::Error>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:84:22
[INFO] [stdout]    |
[INFO] [stdout] 84 |                   _ => {
[INFO] [stdout]    |  ______________________^
[INFO] [stdout] 85 | |                     println!("default case");
[INFO] [stdout] 86 | |                 }
[INFO] [stdout]    | |_________________^ expected `Result<char, Error>`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Result<char, std::io::Error>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lox-interpreter` (bin "lox-interpreter" test) due to 4 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]   --> src/main.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn run(source: &str) {}
[INFO] [stdout]    |        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read_line`
[INFO] [stdout]   --> src/main.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let read_line = std::io::stdin().read_line(&mut input_string).unwrap();
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_read_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lox-interpreter` (bin "lox-interpreter") due to 4 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a2df30a0aefe70da5d8fbdb45efe653f3866195f78e0b852d90e5cd8f1186430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2df30a0aefe70da5d8fbdb45efe653f3866195f78e0b852d90e5cd8f1186430", kill_on_drop: false }`
[INFO] [stdout] a2df30a0aefe70da5d8fbdb45efe653f3866195f78e0b852d90e5cd8f1186430
