[INFO] cloning repository https://github.com/kirkpetersen/rust-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kirkpetersen/rust-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirkpetersen%2Frust-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirkpetersen%2Frust-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34532a261b3591d4a9f19cd65101ab238da31d63
[INFO] building kirkpetersen/rust-examples 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%2Fkirkpetersen%2Frust-examples" "/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/kirkpetersen/rust-examples 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/kirkpetersen/rust-examples
[INFO] finished tweaking git repo https://github.com/kirkpetersen/rust-examples
[INFO] tweaked toml for git repo https://github.com/kirkpetersen/rust-examples written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kirkpetersen/rust-examples 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] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[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] 4a89a63cf40ea9850cddcabb286699f77090ce2b566022f595bfba4dbbaa7229
[INFO] running `Command { std: "docker" "start" "-a" "4a89a63cf40ea9850cddcabb286699f77090ce2b566022f595bfba4dbbaa7229", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a89a63cf40ea9850cddcabb286699f77090ce2b566022f595bfba4dbbaa7229", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a89a63cf40ea9850cddcabb286699f77090ce2b566022f595bfba4dbbaa7229", kill_on_drop: false }`
[INFO] [stdout] 4a89a63cf40ea9850cddcabb286699f77090ce2b566022f595bfba4dbbaa7229
[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] ee3d5bd686b34b5813d2021519fbbbc3a4a0731f8767697832d263a4bc1fcbdf
[INFO] running `Command { std: "docker" "start" "-a" "ee3d5bd686b34b5813d2021519fbbbc3a4a0731f8767697832d263a4bc1fcbdf", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling rust-examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `key`, `value`, `l`, and `r` are never read
[INFO] [stdout]  --> src/trie.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct TrieNode<K, V> {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 3 |     key: K,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     value: V,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     l: Option<Box<TrieNode<K, V>>>,
[INFO] [stdout]   |     ^
[INFO] [stdout] 6 |     r: Option<Box<TrieNode<K, V>>>
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TrieNode` 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 0.49s
[INFO] running `Command { std: "docker" "inspect" "ee3d5bd686b34b5813d2021519fbbbc3a4a0731f8767697832d263a4bc1fcbdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee3d5bd686b34b5813d2021519fbbbc3a4a0731f8767697832d263a4bc1fcbdf", kill_on_drop: false }`
[INFO] [stdout] ee3d5bd686b34b5813d2021519fbbbc3a4a0731f8767697832d263a4bc1fcbdf
[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] e17ef0d159008f1fdd56c5d4825d3fc98d009d03f2f6a9a278e92b402ea7dcd3
[INFO] running `Command { std: "docker" "start" "-a" "e17ef0d159008f1fdd56c5d4825d3fc98d009d03f2f6a9a278e92b402ea7dcd3", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling rust-examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `l` and `r` are never read
[INFO] [stdout]  --> src/trie.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct TrieNode<K, V> {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 5 |     l: Option<Box<TrieNode<K, V>>>,
[INFO] [stdout]   |     ^
[INFO] [stdout] 6 |     r: Option<Box<TrieNode<K, V>>>
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TrieNode` 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 0.53s
[INFO] running `Command { std: "docker" "inspect" "e17ef0d159008f1fdd56c5d4825d3fc98d009d03f2f6a9a278e92b402ea7dcd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e17ef0d159008f1fdd56c5d4825d3fc98d009d03f2f6a9a278e92b402ea7dcd3", kill_on_drop: false }`
[INFO] [stdout] e17ef0d159008f1fdd56c5d4825d3fc98d009d03f2f6a9a278e92b402ea7dcd3