[INFO] cloning repository https://github.com/piperinnshall/crafting-interpreters
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/piperinnshall/crafting-interpreters" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiperinnshall%2Fcrafting-interpreters", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiperinnshall%2Fcrafting-interpreters'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3f2955e7cf94ec60f31a502a729da5ad3fb16942
[INFO] fixing piperinnshall/crafting-interpreters 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%2Fpiperinnshall%2Fcrafting-interpreters" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/piperinnshall/crafting-interpreters
[INFO] finished tweaking git repo https://github.com/piperinnshall/crafting-interpreters
[INFO] tweaked toml for git repo https://github.com/piperinnshall/crafting-interpreters written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/piperinnshall/crafting-interpreters 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/piperinnshall/crafting-interpreters 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-3-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 8d74bb7d3842cfc1eeaab7ddb863774adc2082f814474c8c4d0b97adc7ee09f0
[INFO] running `Command { std: "docker" "start" "8d74bb7d3842cfc1eeaab7ddb863774adc2082f814474c8c4d0b97adc7ee09f0", 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" "8d74bb7d3842cfc1eeaab7ddb863774adc2082f814474c8c4d0b97adc7ee09f0" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d74bb7d3842cfc1eeaab7ddb863774adc2082f814474c8c4d0b97adc7ee09f0", 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" "8d74bb7d3842cfc1eeaab7ddb863774adc2082f814474c8c4d0b97adc7ee09f0" "/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 crafting-interpreters v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Expr` and `Literal`
[INFO] [stdout]  --> src/main.rs:5:27
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::parser::expr::{Expr, Literal};
[INFO] [stdout]   |                           ^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/parser/parser.rs:85:20
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn primary(&mut self) -> Option<Expr> {
[INFO] [stdout]    |                              ------------ expected `Option<Expr>` because of return type
[INFO] [stdout] 84 |         if self.match_token(&[Tk::False]) {
[INFO] [stdout] 85 |             return Expr::Literal(Literal::Boolean(false))
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Option<Expr>`, found `Expr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Option<Expr>`
[INFO] [stdout]               found enum `Expr`
[INFO] [stdout] help: try wrapping the expression in `Some`
[INFO] [stdout]    |
[INFO] [stdout] 85 |             return Some(Expr::Literal(Literal::Boolean(false)))
[INFO] [stdout]    |                    +++++                                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/parser/parser.rs:91:51
[INFO] [stdout]    |
[INFO] [stdout] 91 |             return Expr::Literal(Literal::Boolean(Literal::Nil))
[INFO] [stdout]    |                                  ---------------- ^^^^^^^^^^^^ expected `bool`, found `Literal`
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> src/parser/expr.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  8 |     Boolean(bool),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0317]: `if` may be missing an `else` clause
[INFO] [stdout]   --> src/parser/parser.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 | /         if self.match_token(&[Tk::Nil]) {
[INFO] [stdout] 91 | |             return Expr::Literal(Literal::Boolean(Literal::Nil))
[INFO] [stdout]    | |             ---------------------------------------------------- found here
[INFO] [stdout] 92 | |         }
[INFO] [stdout]    | |_________^ expected `Option<Expr>`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Option<Expr>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout]    = note: `if` expressions without `else` evaluate to `()`
[INFO] [stdout]    = help: consider adding an `else` block that evaluates to the expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Expr` and `Literal`
[INFO] [stdout]  --> src/main.rs:5:27
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::parser::expr::{Expr, Literal};
[INFO] [stdout]   |                           ^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]   --> src/parser/parser.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |             let operator = self.previous();
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]   --> src/parser/parser.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 |             let operator = self.previous();
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser/parser.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |             let right =  self.factor();
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]   --> src/parser/parser.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |             let operator = self.previous();
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser/parser.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |             let right =  self.unary();
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0317.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crafting-interpreters` (bin "crafting-interpreters") due to 3 previous errors; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/parser/parser.rs:85:20
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn primary(&mut self) -> Option<Expr> {
[INFO] [stdout]    |                              ------------ expected `Option<Expr>` because of return type
[INFO] [stdout] 84 |         if self.match_token(&[Tk::False]) {
[INFO] [stdout] 85 |             return Expr::Literal(Literal::Boolean(false))
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Option<Expr>`, found `Expr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Option<Expr>`
[INFO] [stdout]               found enum `Expr`
[INFO] [stdout] help: try wrapping the expression in `Some`
[INFO] [stdout]    |
[INFO] [stdout] 85 |             return Some(Expr::Literal(Literal::Boolean(false)))
[INFO] [stdout]    |                    +++++                                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/parser/parser.rs:91:51
[INFO] [stdout]    |
[INFO] [stdout] 91 |             return Expr::Literal(Literal::Boolean(Literal::Nil))
[INFO] [stdout]    |                                  ---------------- ^^^^^^^^^^^^ expected `bool`, found `Literal`
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> src/parser/expr.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  8 |     Boolean(bool),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0317]: `if` may be missing an `else` clause
[INFO] [stdout]   --> src/parser/parser.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 | /         if self.match_token(&[Tk::Nil]) {
[INFO] [stdout] 91 | |             return Expr::Literal(Literal::Boolean(Literal::Nil))
[INFO] [stdout]    | |             ---------------------------------------------------- found here
[INFO] [stdout] 92 | |         }
[INFO] [stdout]    | |_________^ expected `Option<Expr>`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Option<Expr>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout]    = note: `if` expressions without `else` evaluate to `()`
[INFO] [stdout]    = help: consider adding an `else` block that evaluates to the expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]   --> src/parser/parser.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |             let operator = self.previous();
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]   --> src/parser/parser.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 |             let operator = self.previous();
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser/parser.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |             let right =  self.factor();
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]   --> src/parser/parser.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |             let operator = self.previous();
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser/parser.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |             let right =  self.unary();
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0317.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crafting-interpreters` (bin "crafting-interpreters" test) due to 3 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "8d74bb7d3842cfc1eeaab7ddb863774adc2082f814474c8c4d0b97adc7ee09f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d74bb7d3842cfc1eeaab7ddb863774adc2082f814474c8c4d0b97adc7ee09f0", kill_on_drop: false }`
[INFO] [stdout] 8d74bb7d3842cfc1eeaab7ddb863774adc2082f814474c8c4d0b97adc7ee09f0
