[INFO] fetching crate unidok-parser 0.2.0...
[INFO] checking unidok-parser-0.2.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate unidok-parser 0.2.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate unidok-parser 0.2.0 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unidok-parser 0.2.0
[INFO] finished tweaking crates.io crate unidok-parser 0.2.0
[INFO] tweaked toml for crates.io crate unidok-parser 0.2.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding aho-corasick v0.7.20 (available: v1.1.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 631c166f20d4487c21c12816e0ea3da1bc14458aa8c085ee3d5acefe22ebf1fa
[INFO] running `Command { std: "docker" "start" "-a" "631c166f20d4487c21c12816e0ea3da1bc14458aa8c085ee3d5acefe22ebf1fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "631c166f20d4487c21c12816e0ea3da1bc14458aa8c085ee3d5acefe22ebf1fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "631c166f20d4487c21c12816e0ea3da1bc14458aa8c085ee3d5acefe22ebf1fa", kill_on_drop: false }`
[INFO] [stdout] 631c166f20d4487c21c12816e0ea3da1bc14458aa8c085ee3d5acefe22ebf1fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9dfa9ead0181aad390f39df1ee3e18b94eaa42f1ea45987e688efc059dd715cb
[INFO] running `Command { std: "docker" "start" "-a" "9dfa9ead0181aad390f39df1ee3e18b94eaa42f1ea45987e688efc059dd715cb", kill_on_drop: false }`
[INFO] [stderr]     Checking deunicode v1.6.0
[INFO] [stderr]     Checking detached-str v0.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking slug v0.1.6
[INFO] [stderr]     Checking unidok-repr v0.2.0
[INFO] [stderr]     Checking unidok-parser v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `ind` is never read
[INFO] [stdout]  --> src/blocks/thematic_breaks.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(crate) struct ParseThematicBreak<'a> {
[INFO] [stdout]   |                   ------------------ field in this struct
[INFO] [stdout] 8 |     pub ind: Indents<'a>,
[INFO] [stdout]   |         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParseThematicBreak` has derived impls for the traits `Default`, `Clone`, and `Debug`, but these are intentionally ignored during dead code analysis
[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: field `ind` is never read
[INFO] [stdout]  --> src/blocks/thematic_breaks.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(crate) struct ParseThematicBreak<'a> {
[INFO] [stdout]   |                   ------------------ field in this struct
[INFO] [stdout] 8 |     pub ind: Indents<'a>,
[INFO] [stdout]   |         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParseThematicBreak` has derived impls for the traits `Default`, `Clone`, and `Debug`, but these are intentionally ignored during dead code analysis
[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 1.46s
[INFO] running `Command { std: "docker" "inspect" "9dfa9ead0181aad390f39df1ee3e18b94eaa42f1ea45987e688efc059dd715cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dfa9ead0181aad390f39df1ee3e18b94eaa42f1ea45987e688efc059dd715cb", kill_on_drop: false }`
[INFO] [stdout] 9dfa9ead0181aad390f39df1ee3e18b94eaa42f1ea45987e688efc059dd715cb