[INFO] fetching crate demo2 0.1.0...
[INFO] building demo2-0.1.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate demo2 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate demo2 0.1.0 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 demo2 0.1.0
[INFO] finished tweaking crates.io crate demo2 0.1.0
[INFO] tweaked toml for crates.io crate demo2 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate demo2 0.1.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a5a1296da4741a718ff282148c62b5861778d07d581d8cc6b1dc43472c63158b
[INFO] running `Command { std: "docker" "start" "-a" "a5a1296da4741a718ff282148c62b5861778d07d581d8cc6b1dc43472c63158b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5a1296da4741a718ff282148c62b5861778d07d581d8cc6b1dc43472c63158b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5a1296da4741a718ff282148c62b5861778d07d581d8cc6b1dc43472c63158b", kill_on_drop: false }`
[INFO] [stdout] a5a1296da4741a718ff282148c62b5861778d07d581d8cc6b1dc43472c63158b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e91b35e7b39332fddbb795ff7df39a9f2044a661eea6656066cdb6fe840d0d5d
[INFO] running `Command { std: "docker" "start" "-a" "e91b35e7b39332fddbb795ff7df39a9f2044a661eea6656066cdb6fe840d0d5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.133
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling demo2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `NotAnInt` and `BadFormulaPart` are never constructed
[INFO] [stdout]  --> src/parse.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum ParseError {
[INFO] [stdout]   |          ---------- variants in this enum
[INFO] [stdout] 5 |     NotAnInt(String),
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 6 |     BadFormulaPart(String)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParseError` 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] [stdout] warning: function `parse` is never used
[INFO] [stdout]  --> src/parse.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn parse(s: &str) -> Result<DiceRoll, ParseError> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_roll` is never used
[INFO] [stdout]  --> src/roll.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn run_roll(roll: DiceRoll) -> usize {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "e91b35e7b39332fddbb795ff7df39a9f2044a661eea6656066cdb6fe840d0d5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e91b35e7b39332fddbb795ff7df39a9f2044a661eea6656066cdb6fe840d0d5d", kill_on_drop: false }`
[INFO] [stdout] e91b35e7b39332fddbb795ff7df39a9f2044a661eea6656066cdb6fe840d0d5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 0bf9c1d25c281decbd40e0283518cb5bad219f06abd38bf177e3dd39a442c582
[INFO] running `Command { std: "docker" "start" "-a" "0bf9c1d25c281decbd40e0283518cb5bad219f06abd38bf177e3dd39a442c582", kill_on_drop: false }`
[INFO] [stderr]    Compiling demo2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/roll.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         for i in 0..1000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "0bf9c1d25c281decbd40e0283518cb5bad219f06abd38bf177e3dd39a442c582", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bf9c1d25c281decbd40e0283518cb5bad219f06abd38bf177e3dd39a442c582", kill_on_drop: false }`
[INFO] [stdout] 0bf9c1d25c281decbd40e0283518cb5bad219f06abd38bf177e3dd39a442c582