[INFO] fetching crate mmb-parser 0.7.0...
[INFO] building mmb-parser-0.7.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate mmb-parser 0.7.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate mmb-parser 0.7.0 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 crates.io crate mmb-parser 0.7.0
[INFO] finished tweaking crates.io crate mmb-parser 0.7.0
[INFO] tweaked toml for crates.io crate mmb-parser 0.7.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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 4 packages to latest compatible versions
[INFO] [stderr]       Adding nom v5.1.3 (available: v7.1.3)
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mmb-types v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a030f03e57d91cdcc40f72fb74c0711ecb233aed454c6dfa884618400361b42e
[INFO] running `Command { std: "docker" "start" "-a" "a030f03e57d91cdcc40f72fb74c0711ecb233aed454c6dfa884618400361b42e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a030f03e57d91cdcc40f72fb74c0711ecb233aed454c6dfa884618400361b42e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a030f03e57d91cdcc40f72fb74c0711ecb233aed454c6dfa884618400361b42e", kill_on_drop: false }`
[INFO] [stdout] a030f03e57d91cdcc40f72fb74c0711ecb233aed454c6dfa884618400361b42e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e5125a3c4550dc72e5f27944391ead09ea7c7ec75a0cc96e98085c8d6d49d2f2
[INFO] running `Command { std: "docker" "start" "-a" "e5125a3c4550dc72e5f27944391ead09ea7c7ec75a0cc96e98085c8d6d49d2f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling nom v5.1.3
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling mmb-types v0.3.1
[INFO] [stderr]    Compiling mmb-parser v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `num_entries` is never read
[INFO] [stdout]   --> src/index.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Index<'a> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub(crate) num_entries: u64,
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Index` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "e5125a3c4550dc72e5f27944391ead09ea7c7ec75a0cc96e98085c8d6d49d2f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5125a3c4550dc72e5f27944391ead09ea7c7ec75a0cc96e98085c8d6d49d2f2", kill_on_drop: false }`
[INFO] [stdout] e5125a3c4550dc72e5f27944391ead09ea7c7ec75a0cc96e98085c8d6d49d2f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4503b35f3836ffab1a182ac61e0333549090e37739e525ea026092a9c68d637c
[INFO] running `Command { std: "docker" "start" "-a" "4503b35f3836ffab1a182ac61e0333549090e37739e525ea026092a9c68d637c", kill_on_drop: false }`
[INFO] [stdout] warning: field `num_entries` is never read
[INFO] [stdout]   --> src/index.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Index<'a> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub(crate) num_entries: u64,
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Index` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mmb-parser v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `num_entries` is never read
[INFO] [stdout]   --> src/index.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Index<'a> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub(crate) num_entries: u64,
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Index` has a derived impl for the trait `Debug`, but this is 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 0.35s
[INFO] running `Command { std: "docker" "inspect" "4503b35f3836ffab1a182ac61e0333549090e37739e525ea026092a9c68d637c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4503b35f3836ffab1a182ac61e0333549090e37739e525ea026092a9c68d637c", kill_on_drop: false }`
[INFO] [stdout] 4503b35f3836ffab1a182ac61e0333549090e37739e525ea026092a9c68d637c