[INFO] updating cached repository https://github.com/Kmeakin/parser
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c25bf48ef4d1c1ee5e01158ca37fab474d66d4af
[INFO] checking Kmeakin/parser against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKmeakin%2Fparser" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kmeakin/parser on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Kmeakin/parser
[INFO] finished tweaking git repo https://github.com/Kmeakin/parser
[INFO] tweaked toml for git repo https://github.com/Kmeakin/parser written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 47af3b098e88c1ce4ad32a931e95d4a921d5927cf39b4c9d3537f5dfc5c2da64
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "47af3b098e88c1ce4ad32a931e95d4a921d5927cf39b4c9d3537f5dfc5c2da64"`
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr]    Compiling logos-derive v0.9.7
[INFO] [stderr]     Checking logos v0.9.7
[INFO] [stderr]     Checking parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unreachable call
[INFO] [stderr]    --> src/lexeme.rs:192:51
[INFO] [stderr]     |
[INFO] [stderr] 192 |                 .map_err(|e| LexemeError::Literal(LiteralParseError::Symbol(e))),
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^ - any code following this expression is unreachable
[INFO] [stderr]     |                                                   |
[INFO] [stderr]     |                                                   unreachable call
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable call
[INFO] [stderr]    --> src/lexeme.rs:192:51
[INFO] [stderr]     |
[INFO] [stderr] 192 |                 .map_err(|e| LexemeError::Literal(LiteralParseError::Symbol(e))),
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^ - any code following this expression is unreachable
[INFO] [stderr]     |                                                   |
[INFO] [stderr]     |                                                   unreachable call
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exactness`
[INFO] [stderr]    --> src/number.rs:194:5
[INFO] [stderr]     |
[INFO] [stderr] 194 |     exactness: Exactness,
[INFO] [stderr]     |     ^^^^^^^^^ help: consider prefixing with an underscore: `_exactness`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exactness`
[INFO] [stderr]    --> src/number.rs:194:5
[INFO] [stderr]     |
[INFO] [stderr] 194 |     exactness: Exactness,
[INFO] [stderr]     |     ^^^^^^^^^ help: consider prefixing with an underscore: `_exactness`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `parser`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name parser src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,metadata -C debuginfo=2 --test -C metadata=7401a5919e870cd2 -C extra-filename=-7401a5919e870cd2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern criterion=/opt/rustwide/target/debug/deps/libcriterion-3e633ea8d11f7765.rmeta --extern logos=/opt/rustwide/target/debug/deps/liblogos-04d88ec5a0fa9648.rmeta --extern ordered_float=/opt/rustwide/target/debug/deps/libordered_float-1ef657c5fad7efac.rmeta --extern pretty_assertions=/opt/rustwide/target/debug/deps/libpretty_assertions-2e1b84abdf2e1796.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `parser`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name parser src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C debuginfo=2 -C metadata=e0a09cb0042e030c -C extra-filename=-e0a09cb0042e030c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern logos=/opt/rustwide/target/debug/deps/liblogos-04d88ec5a0fa9648.rmeta --extern ordered_float=/opt/rustwide/target/debug/deps/libordered_float-1ef657c5fad7efac.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "47af3b098e88c1ce4ad32a931e95d4a921d5927cf39b4c9d3537f5dfc5c2da64"`
[INFO] running `"docker" "rm" "-f" "47af3b098e88c1ce4ad32a931e95d4a921d5927cf39b4c9d3537f5dfc5c2da64"`
[INFO] [stdout] 47af3b098e88c1ce4ad32a931e95d4a921d5927cf39b4c9d3537f5dfc5c2da64