[INFO] cloning repository https://github.com/nlsnightmare/toylang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nlsnightmare/toylang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnlsnightmare%2Ftoylang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnlsnightmare%2Ftoylang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c1720ead51e368c7573abaa5648f40d3501f72e5
[INFO] checking nlsnightmare/toylang against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnlsnightmare%2Ftoylang" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nlsnightmare/toylang on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nlsnightmare/toylang
[INFO] finished tweaking git repo https://github.com/nlsnightmare/toylang
[INFO] tweaked toml for git repo https://github.com/nlsnightmare/toylang written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nlsnightmare/toylang 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bc8ae08265177e4f3d7d2d474aaef1e340536aec4b802eb8ee2c55936092ccd
[INFO] running `Command { std: "docker" "start" "-a" "4bc8ae08265177e4f3d7d2d474aaef1e340536aec4b802eb8ee2c55936092ccd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bc8ae08265177e4f3d7d2d474aaef1e340536aec4b802eb8ee2c55936092ccd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bc8ae08265177e4f3d7d2d474aaef1e340536aec4b802eb8ee2c55936092ccd", kill_on_drop: false }`
[INFO] [stdout] 4bc8ae08265177e4f3d7d2d474aaef1e340536aec4b802eb8ee2c55936092ccd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8cfe2f1773da0d098e328a7df83945a7c461d9c7109101f1da908b7f74f1c1c
[INFO] running `Command { std: "docker" "start" "-a" "b8cfe2f1773da0d098e328a7df83945a7c461d9c7109101f1da908b7f74f1c1c", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stderr]     Checking toylang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `line` and `start` are never read
[INFO] [stdout]  --> src/lexer/token.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct TokenSpan {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 5 |     pub line: usize,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 6 |     pub start: usize,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TokenSpan` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 |     InvalidToken(Token),
[INFO] [stdout]    |     ------------ ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 15 |     InvalidToken(()),
[INFO] [stdout]    |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_negation` is never used
[INFO] [stdout]   --> src/parser/bool_expression.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub trait BoolExpressionParser {
[INFO] [stdout]    |           -------------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn parse_negation(&mut self, left: Expression) -> ParseResult<Expression>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `start` are never read
[INFO] [stdout]  --> src/lexer/token.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct TokenSpan {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 5 |     pub line: usize,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 6 |     pub start: usize,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TokenSpan` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 |     InvalidToken(Token),
[INFO] [stdout]    |     ------------ ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 15 |     InvalidToken(()),
[INFO] [stdout]    |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_negation` is never used
[INFO] [stdout]   --> src/parser/bool_expression.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub trait BoolExpressionParser {
[INFO] [stdout]    |           -------------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn parse_negation(&mut self, left: Expression) -> ParseResult<Expression>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.95s
[INFO] running `Command { std: "docker" "inspect" "b8cfe2f1773da0d098e328a7df83945a7c461d9c7109101f1da908b7f74f1c1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8cfe2f1773da0d098e328a7df83945a7c461d9c7109101f1da908b7f74f1c1c", kill_on_drop: false }`
[INFO] [stdout] b8cfe2f1773da0d098e328a7df83945a7c461d9c7109101f1da908b7f74f1c1c