[INFO] fetching crate json_path 0.1.5...
[INFO] checking json_path-0.1.5 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate json_path 0.1.5 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate json_path 0.1.5 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 json_path 0.1.5
[INFO] finished tweaking crates.io crate json_path 0.1.5
[INFO] tweaked toml for crates.io crate json_path 0.1.5 written to /workspace/builds/worker-7-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]      Locking 11 packages to latest compatible versions
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f8fdd453ee0bef7afabadc596dcc7da3f744b2e8f4850b0b00adf93a82ee8301
[INFO] running `Command { std: "docker" "start" "-a" "f8fdd453ee0bef7afabadc596dcc7da3f744b2e8f4850b0b00adf93a82ee8301", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8fdd453ee0bef7afabadc596dcc7da3f744b2e8f4850b0b00adf93a82ee8301", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8fdd453ee0bef7afabadc596dcc7da3f744b2e8f4850b0b00adf93a82ee8301", kill_on_drop: false }`
[INFO] [stdout] f8fdd453ee0bef7afabadc596dcc7da3f744b2e8f4850b0b00adf93a82ee8301
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 551f940c27356771a2c930274c470787cd00d42db93decd61f71a17d80d84ecd
[INFO] running `Command { std: "docker" "start" "-a" "551f940c27356771a2c930274c470787cd00d42db93decd61f71a17d80d84ecd", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]     Checking peekmore v1.3.0
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]     Checking json_path v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `OPEN_BRACE` is never used
[INFO] [stdout]  --> src/tokenizer/constants.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub const OPEN_BRACE: char = '{';
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CLOSE_BRACE` is never used
[INFO] [stdout]  --> src/tokenizer/constants.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub const CLOSE_BRACE: char = '}';
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TAB` is never used
[INFO] [stdout]   --> src/tokenizer/constants.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub const TAB: char = '\t';
[INFO] [stdout]    |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CR` is never used
[INFO] [stdout]   --> src/tokenizer/constants.rs:15:11
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub const CR: char = '\r';
[INFO] [stdout]    |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LF` is never used
[INFO] [stdout]   --> src/tokenizer/constants.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub const LF: char = '\n';
[INFO] [stdout]    |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek_next_word` is never used
[INFO] [stdout]   --> src/tokenizer/stream.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub trait PeekableExt {
[INFO] [stdout]    |           ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn peek_next_word(&mut self) -> Option<String>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OPEN_BRACE` is never used
[INFO] [stdout]  --> src/tokenizer/constants.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub const OPEN_BRACE: char = '{';
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CLOSE_BRACE` is never used
[INFO] [stdout]  --> src/tokenizer/constants.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub const CLOSE_BRACE: char = '}';
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TAB` is never used
[INFO] [stdout]   --> src/tokenizer/constants.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub const TAB: char = '\t';
[INFO] [stdout]    |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CR` is never used
[INFO] [stdout]   --> src/tokenizer/constants.rs:15:11
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub const CR: char = '\r';
[INFO] [stdout]    |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LF` is never used
[INFO] [stdout]   --> src/tokenizer/constants.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub const LF: char = '\n';
[INFO] [stdout]    |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek_next_word` is never used
[INFO] [stdout]   --> src/tokenizer/stream.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub trait PeekableExt {
[INFO] [stdout]    |           ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn peek_next_word(&mut self) -> Option<String>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.05s
[INFO] running `Command { std: "docker" "inspect" "551f940c27356771a2c930274c470787cd00d42db93decd61f71a17d80d84ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "551f940c27356771a2c930274c470787cd00d42db93decd61f71a17d80d84ecd", kill_on_drop: false }`
[INFO] [stdout] 551f940c27356771a2c930274c470787cd00d42db93decd61f71a17d80d84ecd