[INFO] cloning repository https://github.com/carribus/roulette_logic_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carribus/roulette_logic_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarribus%2Froulette_logic_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarribus%2Froulette_logic_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c4295ff4faef266728d5436f15f69a4d53b62f0
[INFO] building carribus/roulette_logic_rs 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%2Fcarribus%2Froulette_logic_rs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/carribus/roulette_logic_rs 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/carribus/roulette_logic_rs
[INFO] finished tweaking git repo https://github.com/carribus/roulette_logic_rs
[INFO] tweaked toml for git repo https://github.com/carribus/roulette_logic_rs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/carribus/roulette_logic_rs 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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] c0b394f5711b7ab8658a8b935c9a5bdda983331e3caff22129087ea72a50801e
[INFO] running `Command { std: "docker" "start" "-a" "c0b394f5711b7ab8658a8b935c9a5bdda983331e3caff22129087ea72a50801e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0b394f5711b7ab8658a8b935c9a5bdda983331e3caff22129087ea72a50801e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0b394f5711b7ab8658a8b935c9a5bdda983331e3caff22129087ea72a50801e", kill_on_drop: false }`
[INFO] [stdout] c0b394f5711b7ab8658a8b935c9a5bdda983331e3caff22129087ea72a50801e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] ce588a9e2aa1047e3f5287b70aa08b931aa683354657b8b72cc4487093ad3488
[INFO] running `Command { std: "docker" "start" "-a" "ce588a9e2aa1047e3f5287b70aa08b931aa683354657b8b72cc4487093ad3488", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling roulette v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `MaxBetOnOption` is never constructed
[INFO] [stdout]  --> src/roulette.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum PlaceBetError {
[INFO] [stdout]   |          ------------- variant in this enum
[INFO] [stdout] 6 |     InvalidBetOption(RouletteBet),
[INFO] [stdout] 7 |     MaxBetOnOption(RouletteBet, u64),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `PlaceBetError` 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] [stdout] warning: method `history` is never used
[INFO] [stdout]    --> src/roulette.rs:271:12
[INFO] [stdout]     |
[INFO] [stdout] 251 | impl Roulette {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 271 |     pub fn history(&self) -> &[u8] {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `Command { std: "docker" "inspect" "ce588a9e2aa1047e3f5287b70aa08b931aa683354657b8b72cc4487093ad3488", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce588a9e2aa1047e3f5287b70aa08b931aa683354657b8b72cc4487093ad3488", kill_on_drop: false }`
[INFO] [stdout] ce588a9e2aa1047e3f5287b70aa08b931aa683354657b8b72cc4487093ad3488
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 3c887de39114fd103af21f3aaa67da454228b022ee147798f4d49521b168c3fb
[INFO] running `Command { std: "docker" "start" "-a" "3c887de39114fd103af21f3aaa67da454228b022ee147798f4d49521b168c3fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling roulette v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `MaxBetOnOption` is never constructed
[INFO] [stdout]  --> src/roulette.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum PlaceBetError {
[INFO] [stdout]   |          ------------- variant in this enum
[INFO] [stdout] 6 |     InvalidBetOption(RouletteBet),
[INFO] [stdout] 7 |     MaxBetOnOption(RouletteBet, u64),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `PlaceBetError` 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 0.30s
[INFO] running `Command { std: "docker" "inspect" "3c887de39114fd103af21f3aaa67da454228b022ee147798f4d49521b168c3fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c887de39114fd103af21f3aaa67da454228b022ee147798f4d49521b168c3fb", kill_on_drop: false }`
[INFO] [stdout] 3c887de39114fd103af21f3aaa67da454228b022ee147798f4d49521b168c3fb