[INFO] cloning repository https://github.com/garunitule/rust_parser_sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/garunitule/rust_parser_sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarunitule%2Frust_parser_sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarunitule%2Frust_parser_sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 656bc9b352f34962bb6361e0859dd59dc3ccd6dc
[INFO] building garunitule/rust_parser_sample against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarunitule%2Frust_parser_sample" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/garunitule/rust_parser_sample on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/garunitule/rust_parser_sample
[INFO] finished tweaking git repo https://github.com/garunitule/rust_parser_sample
[INFO] tweaked toml for git repo https://github.com/garunitule/rust_parser_sample written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/garunitule/rust_parser_sample 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ffcf65c67b3879131f043bf2a45d4d95f07788e1af01821048bd1d8d38d2ff2
[INFO] running `Command { std: "docker" "start" "-a" "5ffcf65c67b3879131f043bf2a45d4d95f07788e1af01821048bd1d8d38d2ff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ffcf65c67b3879131f043bf2a45d4d95f07788e1af01821048bd1d8d38d2ff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ffcf65c67b3879131f043bf2a45d4d95f07788e1af01821048bd1d8d38d2ff2", kill_on_drop: false }`
[INFO] [stdout] 5ffcf65c67b3879131f043bf2a45d4d95f07788e1af01821048bd1d8d38d2ff2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c43405422bf2ad810aa1f439874177f54024af1da683c03f10a147fdcd8d158d
[INFO] running `Command { std: "docker" "start" "-a" "c43405422bf2ad810aa1f439874177f54024af1da683c03f10a147fdcd8d158d", kill_on_drop: false }`
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 Err(e) => {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `UniOpKind` is more private than the item `AstKind::UniOp::op`
[INFO] [stdout]   --> src/ast.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     UniOp { op: UniOp, e: Box<Ast> },
[INFO] [stdout]    |             ^^^^^^^^^ field `AstKind::UniOp::op` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `UniOpKind` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/ast.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum UniOpKind {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `BinOpKind` is more private than the item `AstKind::BinOp::op`
[INFO] [stdout]   --> src/ast.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     BinOp { op: BinOp, l: Box<Ast>, r: Box<Ast> },
[INFO] [stdout]    |             ^^^^^^^^^ field `AstKind::BinOp::op` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `BinOpKind` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/ast.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | enum BinOpKind {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `num` is never used
[INFO] [stdout]   --> src/ast.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Ast {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] 18 |     fn num(n: u64, loc: Loc) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `UnexpectedToken` is never constructed
[INFO] [stdout]   --> src/error.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum ParseError {
[INFO] [stdout]    |          ---------- variant in this enum
[INFO] [stdout] 24 |     UnexpectedToken(Token),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "c43405422bf2ad810aa1f439874177f54024af1da683c03f10a147fdcd8d158d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c43405422bf2ad810aa1f439874177f54024af1da683c03f10a147fdcd8d158d", kill_on_drop: false }`
[INFO] [stdout] c43405422bf2ad810aa1f439874177f54024af1da683c03f10a147fdcd8d158d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23b76c05f21a8f15950a4e3dbd32eaf2189b8681b1d26de31c7e441c7b6e5b0e
[INFO] running `Command { std: "docker" "start" "-a" "23b76c05f21a8f15950a4e3dbd32eaf2189b8681b1d26de31c7e441c7b6e5b0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 Err(e) => {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `UniOpKind` is more private than the item `AstKind::UniOp::op`
[INFO] [stdout]   --> src/ast.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     UniOp { op: UniOp, e: Box<Ast> },
[INFO] [stdout]    |             ^^^^^^^^^ field `AstKind::UniOp::op` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `UniOpKind` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/ast.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum UniOpKind {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `BinOpKind` is more private than the item `AstKind::BinOp::op`
[INFO] [stdout]   --> src/ast.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     BinOp { op: BinOp, l: Box<Ast>, r: Box<Ast> },
[INFO] [stdout]    |             ^^^^^^^^^ field `AstKind::BinOp::op` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `BinOpKind` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/ast.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | enum BinOpKind {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `UnexpectedToken` is never constructed
[INFO] [stdout]   --> src/error.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum ParseError {
[INFO] [stdout]    |          ---------- variant in this enum
[INFO] [stdout] 24 |     UnexpectedToken(Token),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseError` has derived impls for the traits `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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "23b76c05f21a8f15950a4e3dbd32eaf2189b8681b1d26de31c7e441c7b6e5b0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23b76c05f21a8f15950a4e3dbd32eaf2189b8681b1d26de31c7e441c7b6e5b0e", kill_on_drop: false }`
[INFO] [stdout] 23b76c05f21a8f15950a4e3dbd32eaf2189b8681b1d26de31c7e441c7b6e5b0e