[INFO] fetching crate lox-scanner 0.1.0...
[INFO] checking lox-scanner-0.1.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate lox-scanner 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate lox-scanner 0.1.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lox-scanner 0.1.0
[INFO] finished tweaking crates.io crate lox-scanner 0.1.0
[INFO] tweaked toml for crates.io crate lox-scanner 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate lox-scanner 0.1.0 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b949959258027fd4a3216b45549d5547806aeb186680abe504fdc36c7dd0545a
[INFO] running `Command { std: "docker" "start" "-a" "b949959258027fd4a3216b45549d5547806aeb186680abe504fdc36c7dd0545a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b949959258027fd4a3216b45549d5547806aeb186680abe504fdc36c7dd0545a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b949959258027fd4a3216b45549d5547806aeb186680abe504fdc36c7dd0545a", kill_on_drop: false }`
[INFO] [stdout] b949959258027fd4a3216b45549d5547806aeb186680abe504fdc36c7dd0545a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ee2f069b8551623be3e75c36583b2cbc475ed0fffba0e6cc18f599359df10a7
[INFO] running `Command { std: "docker" "start" "-a" "4ee2f069b8551623be3e75c36583b2cbc475ed0fffba0e6cc18f599359df10a7", kill_on_drop: false }`
[INFO] [stderr]     Checking peekmore v1.0.0
[INFO] [stderr]     Checking lox-scanner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `peek_ahead` is never used
[INFO] [stdout]   --> src/source_iterator.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 12 | / impl<T> SourceIterator<T>
[INFO] [stdout] 13 | |     where
[INFO] [stdout] 14 | |         T: Iterator<Item=char>,
[INFO] [stdout]    | |_______________________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |       pub(crate) fn peek_ahead(&mut self) -> Option<&char> {
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek_ahead` is never used
[INFO] [stdout]   --> src/source_iterator.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 12 | / impl<T> SourceIterator<T>
[INFO] [stdout] 13 | |     where
[INFO] [stdout] 14 | |         T: Iterator<Item=char>,
[INFO] [stdout]    | |_______________________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |       pub(crate) fn peek_ahead(&mut self) -> Option<&char> {
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "4ee2f069b8551623be3e75c36583b2cbc475ed0fffba0e6cc18f599359df10a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ee2f069b8551623be3e75c36583b2cbc475ed0fffba0e6cc18f599359df10a7", kill_on_drop: false }`
[INFO] [stdout] 4ee2f069b8551623be3e75c36583b2cbc475ed0fffba0e6cc18f599359df10a7